bluuebunny/crossref_metadata_2025 huggingface dataset:
Satellite-Based Precipitation Estimation and Its Application for Streamflow Prediction over Mountainous Western U.S. Basins
Authors: Behrangi Ali , Andreadis Konstantinos , Fisher Joshua B. , Turk F. Joseph , Granger Stephanie , Painter Thomas , Das Narendra
Published: October 2014

Recognizing the importance and challenges inherent to the remote sensing of precipitation in mountainous areas, this study investigates the performance of the commonly used satellite-based high-resolution precipitation products (HRPPs) over several basins in the mountainous western United States. Five HRPPs [Tropical Rainfall Measuring Mission 3B42 and 3B42-RT algorithms, the Climate Prediction Center morphing technique (CMORPH), Precipitation Estimation from Remotely Sensed Imagery Using Artificial Neural Networks (PERSIANN), and the PERSIANN Cloud Classification System (PERSIANN-CCS)] are analyzed in the present work using ground gauge, gauge-adjusted radar, and CloudSat precipitation products. Using ground observation of precipitation and streamflow, the skill of HRPPs and the resulting streamflow simulations from the Variable Infiltration Capacity hydrological model are cross-compared. HRPPs often capture major precipitation events but seldom capture the observed magnitude of precipitation over the studied region and period (2003–09). Bias adjustment is found to be effective in enhancing the HRPPs and resulting streamflow simulations. However, if not bias adjusted using gauges, errors are typically large as in the lower-level precipitation inputs to HRPPs. The results using collocated Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) and CloudSat precipitation data show that missing data, often over frozen land, and limitations in retrieving precipitation from systems that lack frozen hydrometeors contribute to the observed microwave-based precipitation errors transferred to HRPPs. Over frozen land, precipitation retrievals from infrared sensors and microwave sounders show some skill in capturing the observed precipitation climatology maps. However, infrared techniques often show poor detection skill, and microwave sounding in dry atmosphere remains challenging. By recognizing the sources of precipitation error and in light of the operation of the Global Precipitation Measurement mission, further opportunity for enhancing the current status of precipitation retrievals and the hydrology of cold and mountainous regions becomes available.
Further Development of the Regional Boundary Layer Model to Study the Impacts of Greenery on the Urban Thermal Environment
Authors: Yang Jianbo , Liu Hongnian , Sun Jianning , Zhu Yan , Wang Xueyuan , Xiong Zhe , Jiang Weimei
Published: October 2014

A forest canopy model is developed and coupled into the Regional Boundary Layer Model (RBLM) to fully consider the vertical structure of tree morphology. Instead of a slab surface model formerly used to represent trees in RBLM, the new version allows refinement of the radiation budgets as well as sensible and latent heat fluxes and, hence, more precise simulation of the thermal impacts of tree plantings on urban meteorological behavior. By applying this new version of RBLM, sensitivity tests are conducted to explore the potential impacts of different greenery scenarios on the thermal environment in an eastern Chinese city, Suzhou, during hot summer days. Greenings, both tree planting and grass surfacing, are beneficial in cooling the ambient air temperature. In general, tree planting is more beneficial than grass surfacing with the same coverage. In terms of surface energy balance, with tree coverage increasing from 0% to 20%, and then to 40%, the average surface net radiation fluxes at noon (1200 LST) are 591, 512, and 421 W m−2, respectively. Correspondingly, the Bowen ratio is reduced from 8.78 to 1.20 and then to 0.43 as result of the redistribution of solar energy absorbed at the ground. The cooling effect of trees is more significant at noontime and can remarkably lower the daily maximum air temperature in urban areas. The cooling effect of urban greenery increases with its coverage. Using the study results, a tree coverage of around 40% may be a feasible and optimized urban greenery scheme.
A Closer Look at Boundary Layer Inversion in Large-Eddy Simulations and Bulk Models: Buoyancy-Driven Case
Authors: Gentine Pierre , Bellon Gilles , van Heerwaarden Chiel C.
Published: October 2014

The inversion layer (IL) of a clear-sky, buoyancy-driven convective boundary layer is investigated using large-eddy simulations covering a wide range of convective Richardson numbers. A new model of the IL is suggested and tested. The model performs better than previous first-order models of the entrainment and provides physical insights into the main controls of the mixed-layer and IL growths. A consistent prognostic equation of the IL growth is derived, with explicit dependence on the position of the minimum buoyancy flux, convective Richardson number, and relative stratification across the inversion G. The IL model expresses the interrelationship between the position and magnitude of the minimum buoyancy flux and inversion-layer depth. These relationships emphasize why zero-order jump models of the convective boundary layer perform well under a strong inversion and show that these models miss the additional parameter G to fully characterize the entrainment process under a weak inversion. Additionally, the position of the minimum buoyancy flux within the new IL model is shown to be a key component of convective boundary layer entrainment. The new IL model is sufficiently simple to be used in numerical weather prediction or general circulation models as a way to resolve the IL in a low-vertical-resolution model.
A Dynamically Constrained Method for Determining the Vortex Centers of Tropical Cyclones Predicted by High-Resolution Models
Authors: Xu Qin , Wei Li , Jin Yi , Zhao Qingyun , Cao Jie
Published: October 2014

This paper proposes a new method to properly define and accurately determine the vortex center of a model-predicted tropical cyclone (TC) from a dynamic perspective. Ideally, a dynamically determined TC vortex center should maximize the gradient wind balance or, equivalently, minimize the gradient wind imbalance measured by an energy norm over the TC vortex. In practice, however, such an energy norm cannot be used to easily and unambiguously determine the TC vortex center. An alternative yet practical approach is developed to dynamically and unambiguously define the TC vortex center. In this approach, the TC vortex core of near-solid-body rotation is modeled by a simple parametric vortex constrained by the gradient wind balance. Therefore, the modeled vortex can fit simultaneously the perturbation pressure and streamfunction of the TC vortex part (extracted from the model-predicted fields) over the TC vortex core area (within the radius of maximum tangential wind), while the misfit is measured by a properly defined cost function. Minimizing this cost function yields the desired dynamic optimality condition that can uniquely define the TC vortex center. Using this dynamic optimality condition, a new method is developed in the form of iterative least squares fit to accurately determine the TC vortex center. The new method is shown to be efficient and effective for finding the TC vortex center that accurately satisfies the dynamic optimality condition.
Does the ECMWF IFS Convection Parameterization with Stochastic Physics Correctly Reproduce Relationships between Convection and the Large-Scale State?
Authors: Watson Peter A. G. , Christensen H. M. , Palmer T. N.
Published: October 2014

Important questions concerning parameterization of tropical convection are how should subgrid-scale variability be represented and which large-scale variables should be used in the parameterizations? Here the statistics of observational data in Darwin, Australia, are compared with those of short-term forecasts of convection made by the European Centre for Medium-Range Weather Forecasts Integrated Forecast System. The forecasts use multiplicative-noise stochastic physics (MNSP) that has led to many improvements in weather forecast skill. However, doubts have recently been raised about whether MNSP is consistent with observations of tropical convection. It is shown that the model can reproduce the variability of convection intensity for a given large-scale state, both with and without MNSP. Therefore MNSP is not inconsistent with observations, and much of the modeled variability arises from nonlinearity of the deterministic part of the convection scheme. It is also shown that the model can reproduce the lack of correlation between convection intensity and large-scale CAPE and an entraining CAPE, even though the convection parameterization assumes that deep convection is more intense when the vertical temperature profile is more unstable, with entrainment taken into account. Relationships between convection and large-scale convective inhibition and vertical velocity are also correctly captured.
Attribution and Characteristics of Wet and Dry Seasons in the Upper Colorado River Basin
Authors: Bolinger Rebecca A. , Kummerow Christian D. , Doesken Nolan J.
Published: October 2014

Previous research has shown that the temperature and precipitation variability in the Upper Colorado River basin (UCRB) is correlated with large-scale climate variability [i.e., El Niño–Southern Oscillation (ENSO) and Pacific decadal oscillation (PDO)]. But this correlation is not very strong, suggesting the need to look beyond the statistics. Looking at monthly contributions across the basin, results show that February is least sensitive to variability, and a wet October could be a good predictor for a wet season. A case study of a wet and a dry year (with similar ENSO/PDO conditions) shows that the occurrence of a few large accumulating events is what drives the seasonal variability, and these large events can happen under a variety of synoptic conditions. Looking at several physical factors that can impact the amount of accumulation in any given event, it is found that large accumulating events (>10 mm in one day) are associated with westerly winds at all levels, higher wind speeds at all levels, and greater amounts of total precipitable water. The most important difference between a large accumulating and small accumulating event is the presence of a strong (>4 m s−1) low-level westerly wind. Because much more emphasis should be given to this more local feature, as opposed to large-scale variability, an accurate seasonal forecast for the basin is not producible at this time.
Different Modes of Variability over the Tasman Sea: Implications for Regional Climate*
Authors: Liess Stefan , Kumar Arjun , Snyder Peter K. , Kawale Jaya , Steinhaeuser Karsten , Semazzi Frederick H. M. , Ganguly Auroop R. , Samatova Nagiza F. , Kumar Vipin
Published: October 2014

A new approach is used to detect atmospheric teleconnections without being bound by orthogonality (such as empirical orthogonal functions). This method employs negative correlations in a global dataset to detect potential teleconnections. One teleconnection occurs between the Tasman Sea and the Southern Ocean. It is related to El Niño–Southern Oscillation (ENSO), the Indian Ocean dipole (IOD), and the southern annular mode (SAM). This teleconnection is significantly correlated with SAM during austral summer, fall, and winter, with IOD during spring, and with ENSO in summer. It can thus be described as a hybrid between these modes. Given previously found relationships between IOD and ENSO, and IOD’s proximity to the teleconnection centers, correlations to IOD are generally stronger than to ENSO.

Increasing pressure over the Tasman Sea leads to higher (lower) surface temperature over eastern Australia (the southwestern Pacific) in all seasons and is related to reduced surface temperature over Wilkes Land and Adélie Land in Antarctica during fall and winter. Precipitation responses are generally negative over New Zealand. For one standard deviation of the teleconnection index, precipitation anomalies are positive over Australia in fall, negative over southern Australia in winter and spring, and negative over eastern Australia in summer. When doubling the threshold, the size of the anomalous high-pressure center increases and annual precipitation anomalies are negative over southeastern Australia and northern New Zealand. Eliassen–Palm fluxes quantify the seasonal dependence of SAM, ENSO, and IOD influences. Analysis of the dynamical interactions between these teleconnection patterns can improve prediction of seasonal temperature and precipitation patterns in Australia and New Zealand.
Intensified Impact of East Indian Ocean SST Anomaly on Tropical Cyclone Genesis Frequency over the Western North Pacific
Authors: Zhan Ruifen , Wang Yuqing , Tao Li
Published: October 2014

A recent finding is the significant impact of the sea surface temperature anomaly (SSTA) over the east Indian Ocean (EIO) on the genesis frequency of tropical cyclones (TCs) over the western North Pacific (WNP). In this study it is shown that such an impact is significant only after the late 1970s. The results based on both data analysis and numerical model experiments demonstrate that prior to the late 1970s the EIO SSTA is positively correlated with the equatorial central Pacific SSTA and the latter produces an opposite atmospheric circulation response over the WNP to the former. As a result, the impact of the EIO SSTA on the TC genesis over the WNP is largely suppressed by the latter. After the late 1970s, the area coverage of the EIO SSTA is expanding. This considerably enhances the large-scale circulation response over the WNP to the EIO SSTA and significantly intensifies the impact of the EIO SSTA on TC genesis frequency over the WNP. The results from this study have great implications for seasonal prediction of TC activity over the WNP.
Estimating the Sensitivity of the Atmospheric Teleconnection Patterns to SST Anomalies Using a Linear Statistical Method
Authors: Li Wei , Forest Chris E.
Published: October 2014

The Pacific–North American (PNA) pattern and the North Atlantic Oscillation (NAO) are known to contain a tropical sea surface temperature (SST)-forced component. This study examines the sensitivity of the wintertime NAO and PNA to patterns of tropical SST anomalies using a linear statistical–dynamic method. The NAO index is sensitive to SST anomalies over the tropical Indian Ocean, the central Pacific Ocean, and the Caribbean Sea, and the PNA index is sensitive to SST anomalies over the tropical Pacific and Indian Oceans. The NAO and PNA patterns can be reproduced well by combining the linear operator with the consistent SST anomaly over the Indian Ocean and the Niño-4 regions, respectively, suggesting that these are the most efficient ocean basins that force the teleconnection patterns. During the period of 1950–2000, the NAO time series reconstructed by using SST anomalies over the Indian Ocean + Niño-4 region + Caribbean Sea or the Indian Ocean + Niño-4 region is significantly correlated with the observation. Using a cross-spectral analysis, the NAO index is coherent with the SST forcing over the Indian Ocean at a significant 3-yr period and a less significant 10-yr period, with the Indian Ocean SST leading by about a quarter phase. Unsurprisingly, the PNA index is most coherent with the Niño-4 SST at 4–5-yr periods. When compared with the observation, the NAO variability from the linear reconstruction is better reproduced than that of the coupled model, which is better than the Atmospheric Model Intercomparison Project (AMIP) run, while the PNA variability from the AMIP simulations is better than that of the reconstruction, which is better than the coupled model run.
Latent Heating Contribution from Precipitation Systems with Different Sizes, Depths, and Intensities in the Tropics
Authors: Liu Chuntao , Shige Shoichi , Takayabu Yukari N. , Zipser Edward
Published: October 2014

Latent heating (LH) from precipitation systems with different sizes, depths, and convective intensities is quantified with 15 years of LH retrievals from version 7 Precipitation Radar (PR) products of the Tropical Rainfall Measuring Mission (TRMM). Organized precipitation systems, such as mesoscale convective systems (MCSs; precipitation area > 2000 km2), contribute to 88% of the LH above 7 km over tropical land and 95% over tropical oceans. LH over tropical land is mainly from convective precipitation, and has one vertical mode with a peak from 4 to 7 km. There are two vertical modes of LH over tropical oceans. The shallow mode from about 1 to 4 km results from small, shallow, and weak precipitation systems, and partially from congestus clouds with radar echo top between 5 and 8 km. The deep mode from 5 to 9 km is mainly from stratiform precipitation in MCSs.

MCSs of different regions and seasons have different LH vertical structure mainly due to the different proportion of stratiform precipitation. MCSs over ocean have a larger fraction of stratiform precipitation and a top-heavy LH structure. MCSs over land have a higher percentage of convective versus stratiform precipitation, which results in a relatively lower-level peak in LH compared to MCSs over the ocean. MCSs during monsoons have properties of LH in between those typical land and oceanic MCSs.

Consistent with the diurnal variation of precipitation, tropical land has a stronger LH diurnal variation than tropical oceans with peak LH in the late afternoon. Over tropical oceans in the early morning, the shallow mode of LH peaks slightly earlier than the deep mode. There are almost no diurnal changes of MCSs LH over oceans. However, the small convective systems over land contribute a significant amount of LH at all vertical levels in the afternoon, when the contribution of MCSs is small.
Investigation of the Diurnal Variation of Marine Boundary Layer Cloud Microphysical Properties at the Azores
Authors: Dong Xiquan , Xi Baike , Wu Peng
Published: October 2014

A new method has been developed to retrieve the nighttime marine boundary layer (MBL) cloud microphysical properties, which provides a complete 19-month dataset to investigate the diurnal variation of MBL cloud microphysical properties at the Azores. Compared to the corresponding daytime results presented in the authors' previous study over the Azores region, all nighttime monthly means of cloud liquid water path (LWP) exceed their daytime counterparts with an annual-mean LWP of 140 g m−2, which is ~30.9 g m−2 larger than daytime. Because the MBL clouds are primarily driven by convective instabilities caused by cloud-top longwave (LW) radiative cooling, more MBL clouds are well mixed and coupled with the surface during the night; thus, its cloud layer is deeper and its LWP is higher. During the day, the cloud layer is warmed by the absorption of solar radiation and partially offsets the cloud-top LW cooling, which makes the cloud layer thinner with less LWP. The seasonal and diurnal variations of cloud LWC and optical depth basically follow the variation of LWP. There are, however, no significant day–night differences and diurnal variations in cloud-droplet effective radius (re), number concentration (Nd), and corresponding surface measured cloud condensation nuclei (CCN) number concentration (NCCN) (at supersaturation S = 0.2%). Surface NCCN increases from around sunrise (0300–0600 LT) to late afternoon, which strongly correlates with surface wind speed (r = 0.76) from 0300 to 1900 LT. The trend in hourly-mean Nd is consistent with NCCN variation from 0000 to 0900 LT but not for afternoon and evening with an averaged ratio (Nd/NCCN) of 0.35 during the entire study period.
Differences between the Surface Precipitation Estimates from the TRMM Precipitation Radar and Passive Microwave Radiometer Version 7 Products
Authors: Liu Chuntao , Zipser Edward
Published: October 2014

With 15 yr of the Tropical Rainfall Measuring Mission (TRMM) observations, the passive microwave radiometers [TRMM Microwave Imager (TMI)] and the precipitation radar (PR) report a close geographical distribution of annual precipitation between 36°S and 36°N. However, large discrepancies between PR and TMI precipitation retrievals are also found over several specific regions, such as central Africa, the Amazon, the tropical east Pacific, and north Indian Ocean. To understand these discrepancies, the PR near-surface and the TMI surface precipitation retrievals are compared at both pixel and precipitation system levels using collocated pixels and a precipitation feature database from 1998 to 2012. Over land, the TMI overestimates precipitation in deep and intense convective systems, but misses significant amounts of warm rainfall in shallow systems. Over the ocean, because of the partial beam filling of large footprints of the lower-frequency sensors, the TMI reports a larger precipitation area than the PR and underestimates the precipitation rate in the convective precipitation region. The TMI tends to overestimate precipitation compared to the PR in a large proportion of shallow systems over the tropical east Pacific and trade wind regions with large-scale descent. The PR tends to overestimate precipitation compared to the TMI in a large proportion of shallow systems over rainy oceans, such as the west Pacific and the Atlantic ITCZ. All these findings imply that there are still large uncertainties in the precipitation climatology over some regions. Further ground validation campaigns are still needed, especially over the ocean.
Scale Model Evaluation and Optimization of Sodar Acoustic Baffles
Authors: Chabbey Adrien , Bradley Stuart , Porté-Agel Fernando
Published: October 2014

A 21:1 scaled sodar, operating at 40 kHz, has been built and tested in the laboratory. Sodars, which use sound scattered by turbulence to profile the lowest few hundred meters of the atmosphere, need good acoustic shielding to diminish annoyance and to reduce unwanted reflections from nearby objects. Design of the acoustic shielding is generally inhibited by the difficulty of testing on full-scale systems and uncertainty as to accuracy of models. In contrast, the scale model approach described allows for “bench testing” of many designs under controlled conditions, and efficient comparison with models. Measured beam patterns from the scale model were compared with those from a numerical model based on the Kirchhoff integral theorem. Satisfactory agreement has allowed using the numerical model to optimize the acoustic shield design, both for the gross acoustic baffle geometry and for the geometry of rim modulations known as thnadners. Optimization was performed in the specific case of a scaled model of a commercial phased array sodar.
Dissipation Rate Estimates from Microstructure and Finescale Internal Wave Observations along the A25 Greenland–Portugal OVIDE Line
Authors: Ferron Bruno , Kokoszka Florian , Mercier Herlé , Lherminier Pascale
Published: October 2014

A total of 96 finestructure and 30 microstructure full-depth vertical profiles were collected along the A25 Greenland–Portugal Observatoire de la Variabilité Interannuelle et Décennale en Atlantique Nord (OVIDE) hydrographic line in 2008. The microstructure of the horizontal velocity was used to calculate turbulent kinetic energy dissipation rates εvmp, where vmp refers to the vertical microstructure profiler. The lowest dissipation values (εvmp < 0.5 × 10−10 W kg−1) are found below 2000 m in the Iberian Abyssal Plain and in the center of the Irminger basin; the largest values (>5 × 10−10 W kg−1) are found in the main thermocline, around the Reykjanes Ridge, and in a 1000-m-thick layer above the bottom near 48°N. The finestructure of density was used to estimate isopycnal strain and that of the lowered acoustic Doppler current profiler to estimate the vertical shear of horizontal velocities. Strain and shear were used to estimate dissipation rates εG03 (Gregg et al.) associated with the internal wave field. The shear-to-strain ratio correction term of the finescale parameterization εG03 brings the fine- and microscale estimates of the dissipation rate into better agreement as Polzin et al. found. The latitude/buoyancy frequency term slightly improves the parameterization for weakly stratified waters. Correction term εG03 is consistent with εvmp within a factor of 4.5 over 95% of the profiles. This good consistency suggests that most of the turbulent activity recorded in this dataset is due to the internal wave field. The canonical globally averaged diffusivity value of order 10−4 m2 s−1 needed to maintain the global abyssal stratification (Munk) is only reached on the flank of the Reykjanes Ridge and in the region around 48°N.
The Airborne Cloud–Aerosol Transport System: Overview and Description of the Instrument and Retrieval Algorithms
Authors: Yorks John E. , McGill Matthew J. , Scott V. Stanley , Wake Shane W. , Kupchock Andrew , Hlavka Dennis L. , Hart William D. , Selmer Patrick A.
Published: October 2014

The Airborne Cloud–Aerosol Transport System (ACATS) is a Doppler wind lidar system that has recently been developed for atmospheric science capabilities at the NASA Goddard Space Flight Center (GSFC). ACATS is also a high-spectral-resolution lidar (HSRL), uniquely capable of directly resolving backscatter and extinction properties of a particle from a high-altitude aircraft. Thus, ACATS simultaneously measures optical properties and motion of cloud and aerosol layers. ACATS has flown on the NASA ER-2 during test flights over California in June 2012 and science flights during the Wallops Airborne Vegetation Experiment (WAVE) in September 2012. This paper provides an overview of the ACATS method and instrument design, describes the ACATS HSRL retrieval algorithms for cloud and aerosol properties, and demonstrates the data products that will be derived from the ACATS data using initial results from the WAVE project. The HSRL retrieval algorithms developed for ACATS have direct application to future spaceborne missions, such as the Cloud–Aerosol Transport System (CATS) to be installed on the International Space Station (ISS). Furthermore, the direct extinction and particle wind velocity retrieved from the ACATS data can be used for science applications such as dust or smoke transport and convective outflow in anvil cirrus clouds.
Multiscale Structure and Evolution of Hurricane Earl (2010) during Rapid Intensification
Authors: Rogers Robert F. , Reasor Paul D. , Zhang Jun A.
Published: October 2014

The structure and evolution of Hurricane Earl (2010) during its rapid intensification as sampled by aircraft is studied here. Rapid intensification occurs in two stages. During the early stage, covering ~24 h, Earl was a tropical storm experiencing moderate northeasterly shear with an asymmetric distribution of convection, and the symmetric structure was shallow, broad, and diffuse. The upper-level circulation center was significantly displaced from the lower-level circulation at the beginning of this stage. Deep, vigorous convection—termed convective bursts—was located on the east side of the storm and appeared to play a role in positioning the upper-level cyclonic circulation center above the low-level center. By the end of this stage the vortex was aligned and extended over a deep layer, and rapid intensification began. During the late stage, rapid intensification continued as Earl intensified ~20 m s−1 during the next 24 h. The vortex remained aligned in the presence of weaker vertical shear, although azimuthal asymmetries persisted that were characteristic of vortices in shear. Convective bursts concentrated near the radius of maximum winds, with the majority located inside the radius of maximum winds. Each of the two stages described here raises questions about the role of convective- and vortex-scale processes in rapid intensification. During the early stage, the focus is on the role of convective bursts and their associated mesoscale convective system on vortex alignment and the onset of rapid intensification. During the late stage, the focus is on the processes that explain the observed radial distribution of convective bursts that peak inside the radius of maximum winds.
Mobile Observations of a Quasi-Frontal Transient Moisture Boundary in the Deep South
Authors: White Loren D.
Published: October 2014

A protocol for the collection and analysis of high-resolution (≤300 m) temperature and humidity data along a transect using an unmodified passenger vehicle is described. A case is investigated of a weak dissipating cold front that became disconnected from its upper-tropospheric support and interacted with a developing Gulf of Mexico return flow. The changing relationships between the thermal and moisture gradients are described through cross-section analyses of the mobile, surface synoptic, and radiosonde data, extending from Texas to Alabama. The mobile transect data facilitated description of subsynoptic-scale airmass transition zones in the vicinity of the frontal remnant, as well as other variations within air masses. Similarities and differences are noted relative to previous studies of cold fronts, drylines, and coastal fronts.
Surface Wind Nowcasting in the Penghu Islands Based on Classified Typhoon Tracks and the Effects of the Central Mountain Range of Taiwan
Authors: Wei Chih-Chiang
Published: October 2014

The purposes of this study were to forecast the hourly typhoon wind velocity over the Penghu Islands, and to discuss the effects of the terrain of the Central Mountain Range (CMR) of Taiwan over the Penghu Islands based on typhoon tracks. On average, a destructive typhoon hits the Penghu Islands every 15–20 yr. As a typhoon approaches the Penghu Islands, its track and intensity are influenced by the CMR topography. Therefore, CMR complicates the wind forecast of the Penghu Islands. Six main typhoon tracks (classes I–VI) are classified based on typhoon directions, as follows: (I) the direction of direct westward movement across the CMR of Taiwan, (II) the direction of northward movement along the eastern coast of Taiwan, (III) the direction of northward movement traveling through Taiwan Strait, (IV) the direction of westward movement traveling through Luzon Strait, (V) the direction of westward movement traveling through the southern East China Sea (near northern Taiwan), and (VI) the irregular track direction. The adaptive network-based fuzzy inference system (ANFIS) and multilayer perceptron neural network (MLPNN) were used as the forecasting technique for predicting the wind velocity. A total of 49 typhoons from 2000 to 2012 were analyzed. Results showed that the ANFIS models provided high-reliability predictions for wind velocity, and the ANFIS achieved more favorable performance than did the MLPNN. In addition, a detailed discussion on the interaction of the CMR with the Penghu Islands based on various track directions is provided. For class I, the CMR is observed to have significantly influenced variations in wind speed when typhoons approached the Penghu Islands. In addition, the winds on the Penghu Islands were observed to have been influenced by the distance from the typhoon center to the Penghu Islands for all classes except class II.
Physics Envy
Authors: Howell Jennifer L. , Collisson Brian , King Kelly M.
Published: October 2014

This study assessed the nature of psychology and its consensus regarding core content. We hypothesized that psychology possesses little agreement regarding its core content areas and thus may “envy” more canonical sciences, such as physics. Using a global sample, we compared psychologists’ and physicists’ perceptions regarding the nature of their field and consensus of core content areas within their respective disciplines. Results revealed that psychologists perceive their field as less theoretically and empirically grounded, and its major findings less agreed upon than physics. Psychologists also generated little consensus regarding its most important, core content areas. Discussion focuses on the importance of psychology establishing a core knowledge base and strategies to overcome “physics envy” in the classroom.
India–Myanmar Relations
Authors: Jha Gaurav Kumar , Banerjee Amrita
Published: October 2014

Despite long historical ties, post-colonial relations between India and Myanmar have fluctuated between magnanimity and mistrust. While India often stood for high moral grounds and promotion of democracy, it did so at the cost of losing Myanmar to China. This affected both India and Myanmar adversely: while New Delhi’s economic, energy and security interests were hurt, isolated Yangon became more China-dependent. However, since the early 1990s, domestic developments in Myanmar and post-Cold War structural changes in the world order necessitated conditions for cooperation and mutual gains. It appears that blatant domestic suppression in, and international seclusion of, Myanmar is not desirable. Having witnessed two eras of magnanimity and mistrust, Prime Minister Manmohan Singh’s visit to Myanmar in 2012 heralds a prospective era of market interdependence while opening Pandora’s box: can India get a better share of Myanmar’s commercial possibilities without compromising its core interests in promoting democracy, development and diaspora protection?
How to Be a Successful Publisher
Authors: Pratt Travis C.
Published: October 2014

One of the greatest challenges that new scholars face is getting their work published in peer-reviewed journals. Publications weigh heavily in decisions to hire, promote, and tenure faculty, and they occupy a central position in studies about departmental prestige rankings. The problem is that most scholars find success in publishing to be elusive. The purpose of this article is to provide readers with a series of tips to help them organize their academic lives so that they may become a successful publisher. None of the tips I suggest are for the faint of heart, and no tricks or gimmicks are offered. Instead, the broad theme is that scholars need to take agency over their careers. Put simply, your success is your responsibility!
How to Be a Successful Teacher of Professional Development
Authors: Johnson W. Wesley
Published: October 2014

Professional development has numerous meanings. It varies from discipline to discipline and from program to program and often from individual to individual. In 1960s and 1970s, the criminal justice system came under intense scrutiny for their responses to Civil Rights and Vietnam War demonstrations. In response, the federal government allocated millions of dollars into the training, education, and professional development of criminal justice employees. The primary focus at that time was on preparing undergraduate and graduate students for work in the field of criminal justice. As academic programs in criminology and criminal justice have evolved, the need for a new model of professional development has emerged that facilitates the mentoring of young scholars and educators. More recently, doctoral programs in our field have turned to structuring, in various forms, the professional development of future scholars. This article discusses the evolving nature of teaching, training, and professional development in criminology/criminal justice education and provides a model for a doctoral-level course in professional development.
Abstract Time and Affective Perception in the Sonic Work of Art
Authors: Ikoniadou Eleni
Published: October 2014

The purpose of this article is to explore the concept of rhythm as enabling relations and thus as an appropriate mode of analysis for digital sound art installation. In particular, the article argues for a rhythmanalysis of the sonic event as a ‘vibrating sensation’ (Deleuze and Guattari) that incorporates the virtual without necessarily actualizing it. Picking up on notions such as rhythm, time, affect, and event, particularly through their discussion in relation to Susanne Langer’s work, I argue for the consideration of the sonic event as an instance of a different kind of temporality subsisting underneath clock-time and sense perception. Ultimately, and this is the position of this essay, an investigation into experimental projects that interweave digital, sound, and aesthetic dimensions enables the articulation of a rhythmic time that helps account for the unknown, indeterminate, and unintentional forces immanent to the sonic.
Eurhythmy and Kakorhythmy in Art and Education
Authors: Laban Rudolf
Published: October 2014

This text translated here (first published in Die Tat in May 1921) is an early elaboration of Rudolf Laban’s polyrhythmic ontology. The phenomenon of rhythm here takes shape through the manifold ways in which it resonates in the text (Ur-rhythm, Eu-rhythm, Kako-rhythm). Besides positing a fundamental co-dependency between rhythm, movement and space, Laban sees rhythm here also as the gateway to a socio-ethical dimension culminating in the Festival, or art of celebration.
Rhythmic Bodies: Amplification, Inflection and Transduction in the Dance Performance Techniques of the “Bashment Gal”
Authors: Henriques Julian
Published: October 2014

This article explores the rhythmic body with the example of the embodiment of the ‘bashment gal’ and the role she plays in the dancehall sound system session. It considers rhythm as an energetic patterning process operating both within and between media. Rhythm provides a means of communication and making sense that does not rely on representation or code. There are three elements to performance techniques of the rhythmic body – amplification, inflection and transduction. Amplification for the bashment gal’s performance techniques involves increasing the size or effort of her dance movements, dancing in a chorus line accelerating her tempo. In what is considered as a hyper-sexualized arena of the dancehall session, it is argued that the bashment gal has to be understood in terms of African traditions where sexual pleasure and fertility are not separate. With rhythmic inflection the bashment gal gives distinctiveness to her performance, as is much prized in the style and fashion of the dancehall scene. The transduction of patterning from one medium to another, via tympanic surfaces, helps to forge the sound system session and the bashment gal as a rhythmic whole and fosters her sense of identity as a rhythmic body.
Rhythm Returns: Movement and Cultural Theory
Authors: Henriques Julian , Tiainen Milla , Väliaho Pasi
Published: October 2014

This introduction charts several of rhythm's various returns as a way of laying out the theoretical and methodological field in which the articles of this special issue find their place. While Henri Lefebvre’s rhythmanalysis is perhaps familiar to many, rhythm has appeared in a wide repertoire of guises, in many disciplines over the decades and indeed the centuries. This introduction attends to the particular roles of rhythm in the formation of modernity ranging from the processes of industrialization and the proliferation of new media technologies to film and literary aesthetics as well as conceptualizations of human psychology, social behaviour and physiology. These are some of the historical antecedents to the contemporary understandings of rhythm within body studies to which most of the contributions to this issue are devoted. In this respect, the introduction outlines recent approaches to rhythm as vibration, a force of the virtual, and an intensive excess outside consciousness.
A Phenomenology of/with Total Movement: Response to Erin Manning
Authors: McNeilly Jodie
Published: October 2014

In ‘Wondering the world directly’, Erin Manning criticizes phenomenology by drawing upon Merleau-Ponty’s reflections on the problems of his own project and the criticisms of José Gil. Manning claims that phenomenology goes ‘wrong’ in its privileging of the subject and processes of intentionality: the ‘consciousness–object distinction’. While phenomenology on this understanding alone is inadequate to account for movement and the body, process philosophy has the ‘ability to create a field for experience that does not begin and end with a human subject’. This article responds to Manning’s criticism by arguing that phenomenology never intended to perpetuate a concept of subject that fixes an inexorable gap between itself and objects. A historical assessment of subjectivity and intentionality in the work of five different authors, alongside critical points that address Manning’s misconstrual of phenomenology, leads to an understanding of movement that need not ‘outrun the subject’ or become a precarious limit to perceptual experience because of its primacy.
Austenite–ferrite transformation in enhanced niobium, low carbon steel
Authors: Yan P. , Bhadeshia H. K. D. H.
Published: October 2014

The austenite to ferrite transformation characteristics of a commercial high strength line pipe steel containing 0·05 wt- carbon and 0·095 wt- niobium have been rigorously studied by continuous cooling experiments in the range between 960 and 1260°C. A significant delay in the austenite to allotriomorphic ferrite transformation has been demonstrated to occur under practically relevant thermal processing conditions. The effects of prior austenite grain size and soluble niobium have been carefully evaluated and isolated and it has been concluded that the amount of niobium in solution in the austenite is primarily responsible for the retardation. Alternative hypotheses to explain the mechanism whereby niobium exerts this effect on the hardenability of steel are discussed in detail. Soluble niobium reducing the austenite grain boundary energy is argued to be the most convincing explanation of the phenomenon and a reduction of grain boundary energy of 0·286 J m−2 per wt- of soluble niobium content has been proposed.
Growth direction and Si alloying affecting directionally solidified structures of Al–Cu–Si alloys
Authors: Costa T. A. , Moreira A. L. , Moutinho D. J. , Dias M. , Ferreira I. L. , Spinelli J. E. , Rocha O. L. , Garcia A.
Published: October 2014

The roles of growth direction and Si content on the columnar/equiaxed transition and on dendritic spacings of Al–Cu–Si alloys still remain as an open field to be studied. In the present investigation, Al–6 wt-Cu–4 wt-Si and Al–6 wt-Cu alloys were directionally solidified upwards and horizontally under transient heat flow conditions. The experimental results include tip growth rate and cooling rates, optical microscopy, scanning electron microscopy energy dispersive spectrometry and dendrite arm spacings. It was found that silicon alloying contributes to significant refinement of primary/secondary dendritic spacings for the upward configuration as compared with corresponding results of the horizontal growth. Experimental growth laws are proposed, and the effects of the presence/absence of solutal convection in both growth directions are discussed.
Effects of elements W and C on microstructure and wear property of γ-TiAl surface alloying layer
Authors: Duan B. Z. , Zhang P. Z. , Wei X. F. , Wang L. , Wei D. B. , Zhen D. D.
Published: October 2014

To solve the poor tribological property of the γ-TiAl alloy, the duplex treatment of plasma carburisation on plasma alloying γ-TiAl with tungsten was conducted by double glow plasma surface alloying technique. The results indicated the alloying layer consisted of TiC and W2C phase, metallurgically adhered to the substrate. In terms of the H/E and H3/E2 ratios, the duplex treated specimen was nearly three times larger than the untreated specimen. The wear property of the specimens was tested on a pin-on-disk tribometer by rubbing against Si3N4 ceramic ball. The wear rate of the duplex-treated specimens is 1·056×10−4 mm3 N−1 m−1, which is only 25·9% of that of the untreated specimens. The relationship between alloying layer mechanical property and wear resistance indicates that the carbide phase formed within the alloying layer contributes to the improvement of the wear performance.
Electroless plating of copper on Al2O3 and its heat treatment behaviour
Authors: Lu Z.-L. , Wang Z.-C. , Luo L.-M. , Huang X.-M. , Tan X.-Y. , Chen J.-B. , Cheng J-G. , Wu Y.-C.
Published: October 2014

Electroless copper plating on Al2O3 substrate assisted by a new non-noble pretreatment is developed, the surface exhibits granular distribution, and the particles are closely bound except for the presence of defects (large holes). Heat treatment is performed at various temperatures to modify this surface. Results show that slight surface changes occur when the heat treatment temperature is below the recrystallisation temperature. Beyond the recrystallisation temperature, particles are fused, thereby modifying certain properties. However, heat stress also increases with increased temperature to 800°C, leading to poor bonding between the plating and substrate. When the temperature approaches the melting point of copper, plating exhibits an entirely different surface morphology. The molten copper in the cooling process forms shrinkages and dimples that reduce coating performance. The optimal heat treatment temperature is deemed to be approximately 500°C.
A new iteration scheme for a hybrid pair of generalized nonexpansive mappings
Authors: Uddin Izhar , Abdou Afrah AN , Imdad Mohammad
Published: October 2014

In this paper, we construct an iteration scheme involving a hybrid pair of nonexpansive mappings and utilize the same to prove some convergence theorems. In the process, we remove a restricted condition (called end-point condition) in Sokhuma and Kaewkhao’s results (Fixed Point Theory Appl. 2010:618767, 2010). Thus, our results generalized and improved several results contained in Sokhuma and Kaewkhao (Fixed Point Theory Appl. 2010:618767, 2010), Akkasriworn et al. (Int. J. Math. Anal. 6(19):923-932, 2012), Uddin et al. (Bull. Malays. Math. Soc., accepted) and Sokhuma (J. Math. Anal. 4(2):23-31, 2013).

MSC:47H10, 54H25.
Iron deficiency responses in rice roots
Authors: Kobayashi Takanori , Nakanishi Itai Reiko , Nishizawa Naoko K.
Published: October 2014

Iron (Fe) is an essential element for most living organisms. To acquire sparingly soluble Fe from the rhizosphere, rice roots rely on two Fe acquisition pathways. The first of these pathways involves Fe(III) chelators specific to graminaceous plants, the mugineic acid family phytosiderophores, and the second involves absorption of Fe2+. Key components in this response include enzymes involved in the biosynthesis of deoxymugineic acid (OsNAS1, OsNAS2, OsNAAT1, and OsDMAS1), the deoxymugineic acid efflux transporter (TOM1), the Fe(III)-deoxymugineic acid transporter (OsYSL15), and Fe2+ transporters (OsIRT1, OsIRT2, and OsNRAMP1). In whole roots, these proteins are expressed in a coordinated manner with strong transcriptional induction in response to Fe deficiency. Radial transport of Fe to xylem and phloem is also mediated by the mugineic acid family phytosiderophores, as well as other chelators and their transporters, including Fe(II)-nicotianamine transporter (OsYSL2), phenolics efflux transporters (PEZ1 and PEZ2), and citrate efflux transporter (OsFRDL1). Among these, OsYSL2 is strongly induced under conditions of Fe deficiency. Both transcriptional induction and potential feedback repression mediate the expressional regulation of the genes involved in Fe uptake and translocation in response to Fe deficiency. The transcription factors IDEF1, IDEF2, and OsIRO2 are responsible for transcriptional induction, whereas the ubiquitin ligases OsHRZ1 and OsHRZ2, as well as the transcription factors OsIRO3 and OsbHLH133, are thought to mediate negative regulation. Furthermore, IDEF1 and OsHRZs bind Fe and other metals, and are therefore candidate Fe sensors. The interacting functions of these regulators are thought to fine tune the expression of proteins involved in Fe uptake and translocation.