bluuebunny/crossref_metadata_2025 huggingface dataset:
Impact of ATOVS temperature and moisture profiles on NCMRWF analysis and prediction
Authors: GUPTA M. DAS , MITRA A. K. , PRASAD V. S. , RAJAN D.
Published: January 2022

Global high resolution (120 km) ATOVS temperature and moisture profile data from polar orbiting satellites NOAA 15 & 16 is been made available to user community recently by NESDIS (National Environmental Satellite, Data and Information Service). NCMRWF also has started using these products in its operational global data assimilation system.  Extensive impact assessment experiments have been conducted prior to its operational utilization.   Impact is also studied during the onset phase of southwest monsoon over India. Results of these experiments are presented in this article. Study show that the impact of ATOVS data is seen on the mean analysed and predicted fields upto 120 hrs prediction specially over the oceanic region. It also reveals that the utilization of these data is able to predict the rainfall over the Indian peninsular region and the adjoining ocean in more realistic manner upto 72 hr forecast, beyond which there is hardly any meaningful improvement.
Evapotranspiration estimation using remote sensing data
Authors: SINGH D. , HERLIN I. , BERROIR J. P. , BOUZIDI S. , LAHOCHE F.
Published: January 2022

Evapotranspiration (ET) is a critical hydrological link between the earth surface and the atmosphere. It is therefore important point of issues involving many aspects of climate, climate change, and ecosystem response. It is well known that ET is the process responsible for the transfer of the moisture from soil and vegetated surface to the atmosphere. Changes in ET are likely to have large impacts on terrestrial vegetation. Since the distribution and abundance of plant communities are controlled to a large extent by the quantity and seasonality of moisture. If the changes in water balance are significant, major shifts in vegetative patterns and condition are a likely result of climate change. Equally changes in ET are likely to impact atmospheric composition of green house gases, and climate, as the hydrological cycle increases in intensity with warming. Therefore, in this paper, it is attempted to estimate the ET over vegetative and bare field using National Oceanic and Atmospheric Administration (NOAA)/ Advanced Very High Resolution Radiometer (AVHRR) data at coarse spatial resolution of 1.1 km as a function of Normalized Difference Vegetation Index (NDVI) and with semi-empirical approach.  For this purpose, a model has been proposed to estimate the ET over vegetative and bare field. The dependence of ET on NDVI-Surface temperature has been checked by multiple regression analysis and quite good percentage of dependence of ET on NDVI-Surface temperature has been observed. This type of estimation will be helpful for climate modeler, climatologists, ecosystem modeler and regional planer.
Association between mid-latitude circulation and onset of Indian summer monsoon over Kerala
Authors: BHATLA R. , CHATTOPADHYAY J.
Published: January 2022

Teleconnections between mid latitude circulation over different sectors and onset of Indian summer monsoon over Kerala for the period of 1971-89 have been examined. Significant negative relationships are observed between the meridional circulation indices and general perturbation of zonal flow and the monsoon onset over Kerala.  Strong and significant positive relationships are also observed between frequency of zonal index over sector 160° E to 45° W and onset dates of monsoon over Kerala.
Evaluation of dynamical and thermal anomalies associated with the summer monsoon of 1997 and 1999
Authors: BHOWMIK S. K.ROY
Published: January 2022

The year 1997 was characterized by rapid development of a strong El Nino event and during 1999, a La Nina episode prevailed. The response of all India monsoon rainfall  to these events  in 1997 (above normal rainfall; >100%) and 1999 (below normal rainfall; <100%)  was of unusual nature. In this paper, the reasons for this have been investigated in terms of planetary scale dynamical and thermal  anomaly  indices. The major findings of this study are (a) The early onset of south west monsoon  in 1999  was associated with the stronger positive vertical shear of zonal anomaly over the north Indian Ocean, (b) Development of an active inverse Hadley circulation over Indian longitude appears to play  an important role to reactivate monsoon during  August and September  in 1997,  (c) Positive anomalies of tropospheric temperature occupied larger area over the Tibetan  Plateau  in May 1999,  (d)  The geopotential height   anomaly at 200 hPa over the Tibetan Plateau during the month of May in 1999, in the year of early  onset, was considerably higher compared to 1997 and (e) The dominance of negative anomalies of mean sea level pressure during May in 1999 over Indian region  reflected the  La Nina influence.
A case study of katabatic winds over Schirmacher Oasis, east Antarctica
Authors: KULANDAIVELU E. , DANG S. P.
Published: January 2022

Katabatic winds are a regular feature during night and early morning hours over valleys and low lying areas adjacent to high terrains. In Antarctica, the mass of the earth in the form of plateau is covered with full of ice and has a downslope from the South Pole everyside upto the coast. Due to cooling of air near the ground as well as due to pressure  gradient, the coastal belt often experiences strong winds blowing down the slope of the plateau. In this study “katabatic wind” at Maitri over Schirmacher Oasis has been examined using the data collected during the 9th Indian Antarctic Expedition 1990-91. The primary results show that katabatic winds are observed in all the months with higher frequency and strength in winter compared to other seasons. A distinction between pure katabatic wind and extraordinary katabatic wind is done based on the wind direction and associated changes in the surface temperature and weather conditions.
Irrigation requirements of cotton at different agroclimatic regions of the country
Authors: CHATTOPADHYAY N. , SAMUI R. P.
Published: January 2022

Studies were made to find out the irrigation requirements of different varieties of cotton grown at six locations situated in different agroclimatic regions of the country.  It is found that there is a considerable variation of irrigation requirements at different growth stages of the crop and also among the varieties cultivated at different regions. In general, the crop requires maximum irrigation either at flowering or boll formation stages.  The study reveals that more irrigation is required for the crop grown at Bellary (54.2-56.2 cm), Anand (45.4-63.4 cm) and Kovilpatti (41.0-63.4 cm) compared to that at Akola (15.0-47.3 cm) and Coimbatore (16.9-36.4 cm).  Irrigation timing differs considerably due to high degree of variability of rainfall in different regions. Based on probability of rainfall at 70% level, irrigation requirements of cotton has been computed. Specific guidelines are generated to utilise the information for irrigation scheduling of cotton operationally through Agromet Advisory Service.
Systematic errors of IMD Operational NWP model
Authors: ROY BHOWMIK S. K.
Published: January 2022

The systematic errors of IMD (India Meteorological Department) limited area model over Indian region using 48 hours forecast fields for winter and  summer seasons are examined in this paper. The study reveals that the core of the sub tropical westerly jet and tropical easterly jet are well simulated in the zonal component of wind. In case of meridional component of wind significant difference is noticed between forecast and analysis. In the upper tropospheric levels (above 100 hPa) northerly biases are noticed. Thermal structure of the model exhibits cool bias in middle and lower tropospheric levels over the northern latitudes. The nature of model biases of the geopotential height changes with the season. Model drying over the tropical belt and moistening towards the northern latitudes are found in all the seasons studied.
Surface wind characterization at an Antarctic coastal station, Maitri
Authors: SRIVASTAVA ARUN , JAIN V.  K. , DUTTA H.  N.
Published: January 2022

Surface winds in the atmosphere of Maitri (70.7º S, 11.7º E) a coastal Indian station have been analysed for the year 1992. Surface winds blow most frequently from the sector 165° ± 25°. Wind chill factor for the year 1992 shows that chilling is highest during the month of August and lowest during the month of January. Two cases of blizzards one during summer and another during winter have also been studied. Surface winds remained practically from the SE, SSE and SW sector during the blizzards.
On nowcasting wind shear induced turbulence over Chennai air field
Authors: SURESH R.
Published: January 2022

With the newly installed Doppler Weather Radar at Cyclone Detection  Radar station, Chennai during October 2001, it has been made possible to analyse the meteorological conditions conducive for the  wind shear induced turbulence experienced by the pilots in the approach runway at the time of landing and take-off. The radar has been put into operation w.e.f.  21 February, 2002. Wind shears reported during February – October 2002, have been critically analysed in this study. The three dimensional shear (3DS), a combination of radial, azimuthal and elevation shears, gives a first hand information atleast half an hour before the occurrence of shear induced moderate turbulence when its value exceeds 16mps/km. The 3DS of more than 20mps/km is normally associated with turbulence experienced by the pilots. With the availability of sophisticated and vast computing power, it is now possible to delineate the layer at which the shear is active within 3-5 minutes from the receipt of the radar measured volume data by quickly computing elevation / vertical / radial / azimuthal shear etc. However, to arrive at a meaningful conclusion on the threshold values of shears that are conducive for wind shear induced turbulence and to make use of this information to alert the pilots, feed back from the pilots to build a detailed data base is absolutely inevitable. Monitoring of passage of sea breeze front may also be useful to issue wind shear warnings. The time tested Richardson number has also been verified for its ‘outlook predictability’ of the shear induced turbulence around the airport, though it can not pinpoint the exact location and the time at which turbulence is active. It is hoped that with precise, accurate and timely in-flight report about the wind shear experienced by the pilots and based on the experience gained in analyzing such information, it will be possible to issue probable ‘wind shear alert / warning’ in the near future.
Soil heat flux under irrigated, partially irrigated wheat and bare vertisol in relation to varying soil moisture and leaf area index at Pune
Authors: SAMUI R. P. , DHOTRE A. K. , JADHAV S. S.
Published: January 2022

Soil heat flux as a function of moisture content in the drying cycles both under irrigated and partially irrigated wheat and in bare black vertisol was studied to relate temporal changes in soil heat fluxes to changes in leaf area index (LAI), soil water content and meteorological parameters. Moisture content dropped as low as 1 to 5 percent by weight at surface layer and 5 to 10 percent by weight at subsurface layers when irrigation was shut off under partially irrigated plot. The peak weekly mean global, net and reflected radiation during the crop growing season in this semi-arid region goes as high as 655, 361 and 179 Wm-2 respectively in the year 1996-97 and 700, 366 and 137 Wm-2 respectively during the year 1997-98. Soil temperature at 1430 hours IST ranged from 27 to 40°C at the surface   (5.0 cm) layer under irrigated condition. It was 7 to 10° C and 2 to 3° C higher in the surface and subsurface layers respectively under partially irrigated wheat during the drying cycle. The upward soil heat flux ranged from -3.3  to  -29.7 Wm-2 at 0730 hours IST, whereas downward heat flux at 1430 hours IST ranged between 8.4 to 33.9 Wm-2 under irrigated condition. Under partially irrigated condition it varied from -0.7 to -9.2 Wm-2 at 0730 hours IST and from 10.4 to 20.9 Wm-2 at 1430 hours IST; whereas it varied from -4.2 to -17.6 Wm-2 at 0730 hours IST and 6.7 to 24.7 Wm-2 at 1430 hours IST, under bare soil. The maximum mean heat fluxes into 5-20 cm soil depth under irrigated, partially irrigated and the bare soil were 10.2, 5.0 and 6.5 Wm-2 and 9.2, 7.1, and 6.7 Wm-2 respectively in the years 1996-97 and 1997-98.  Soil temperature at 1430 hours IST both for irrigated wheat and bare vertisol and global radiation with soil temperature at 0730 hours IST under partially irrigated wheat were found to be the best predictors of soil heat flux. The relationships between soil heat flux and soil water content at different depth intervals along with LAI and other meteorological parameters could be used for estimation of soil heat flux, both for irrigated and partially irrigated wheat and bare soil.
Satellite analysis of tropical cyclones using NOAA-16 AMSU measurements over Indian region
Authors: SINGH DEVENDRA , BHATIA R. C. , SRIVASTAVA S. K.
Published: January 2022

The first Advanced Microwave Sounding Unit (AMSU) was launched aboard NOAA-15 satellite on 13 May 1998.  AMSU measurements are now also available from NOAA-16 and NOAA-17 satellites.  The AMSU is well suited for the observation of tropical cyclones because the ice clouds that cover tropical cyclones do not significantly affect its measurements.  In this paper the intensity of three tropical cyclones formed over Bay of Bengal and Arabian Sea in the month of October 1999, May and September 2001 were studied using AMSU measurements.  The upper tropospheric warm core thermal anomalies over the tropical cyclone areas were computed from temperature profiles using the NOAA-15 and NOAA-16 AMSU-A measurements. It has been observed that the magnitude of the warm core temperature anomaly at about 250 hPa was an indicator of the intensity of tropical cyclones in all three cases. The order of the temperature anomaly was about 6oC in case of super tropical cyclone, 1999 while in other two cases the order of the temperature anomaly were of about 3oC for moderate tropical cyclones, 2001. Therefore, it may be stated that the AMSU data appeared to offer substantial opportunities for improvements in tropical cyclone analysis and forecasting.
Crustal structure in southern and central West Bengal using deep seismic sounding explosion data
Authors: GHOSE A. K. , BHATTACHARYA S. N.
Published: January 2022

Deep seismic sounding (DSS) data provides an excellent opportunity to accurately delineate the crustal structure of a given region owing to the fact that the location and origin time of the source (Chemical explosion) are available. India Meteorological Department is carrying out such surveys since early 1970's. In this paper. seismic wave velocities in the upper part of the crust in southern and central West Bengal are estimated from three DSS field surveys conducted during 1987-1990. From the analysis of the data it is noted that the sedimentary layer in the region consists of mainly two layers. The first layer is of thickness 1.25 to 1.49 km with P wave velocity of 2.85 to 2.88 km/s and S-wave velocity of 1.71 to 1.77 km/s. Surface wave data show that near Burdwan, the sedimentary layer includes a thin low velocity layer of thickness 250 m at the top. The thickness of lowest sedimentary layer increases southward from 2.32 km to 3.73 km : in this layer the P-wave velocity is between 3.9 & 4.1 km/s. The sedimentary layers are overlying a granitic layer with P- wave velocity of 5.73 to 5.83 km/s.
Seasonal variation of 200 hPa upper tropospheric features over India in relation to performance of Indian southwest and northeast monsoons
Authors: RAJ Y. E. A. , SURESH R. , SANKARAN P. V. , AMUDHA B.
Published: January 2022

The relation between 200 hPa upper tropospheric parameters such as  temperature, zonal and meridional winds over India with the Indian southwest and northeast monsoons has been studied, based on monthly and seasonal upper air  data of 14 well-distributed Indian radiosonde stations for the 36 year period 1963-98.  It has been found that by and large, positive temperature/height anomalies, negative zonal wind anomalies and northerly position of the sub-tropical ridge during the preceding months/seasons are associated with good southwest/poor northeast monsoons and that complement of the above with poor southwest/good northeast monsoons.  The profiles of the above relationship display a double peak in May and September/October.  A multiple regression forecast scheme for seasonal forecasting of northeast monsoon rainfall, based on October data has been derived which when tested in an independent sample of         5 years yielded nearly 50% correct forecasts.  The southwest monsoon  rainfall of India and the northeast monsoon rainfall of Tamil Nadu/Southern parts of India have been shown to share a negative relationship, though the relationship is discordant rather than decisive, which gets defined better when  years of deficient southwest monsoon  rainfall get excluded. The feature of good Indian northeast monsoon getting preceded by colder upper tropospheric temperatures  as shown in the study tie in well with the accepted mechanism of Asian winter monsoon getting intensified due to cold surges from the Siberian High.
Spread of drought in Rajasthan during the 1987 south-west monsoon
Authors: JAT M. L. , SINGH RAJVEER , BALYAN J. K.
Published: January 2022

The failure of south-west monsoon over the Rajasthan state during 1987, has once again resulted in wide spread drought in most part of state. Agricultural production especially, in dryland tracts has considerably decreased, during the year of worst drought during 15 years period (1981-95). Weekly reference evapotranspiration values were estimate by Penman Montheith method for determination of water balance. The year 1987 found to be severe or disastrous drought year at all the stations studied except at Fatehpur where it was a moderate drought year. Studies on the incidence and spread of drought over Rajasthan during the severe drought year 1987, revealed that drought condition originated first in southern region (Banswara) during the 26th week, spread in south-west direction (Jodhpur and Pali) during the 27th & 28th weeks and dissipated in a north-east direction movement (Fatehpur) in 39th week.
Decadal and epochal variation of frequency and duration of monsoon disturbances and their secular relationship with rainfall over India
Authors: KUMAR J. RAJENDRA , THAPLIYAL V. , DASH S. K.
Published: January 2022

Decadal and epochal variation of frequency and duration of monsoon disturbances like low pressure areas (lows), depressions and Cyclonic Storms (CS) over Indian region are studied by using 110 years (1890-1999) data. No linearly decreasing/increasing trend is observed during 110 years period in any of their frequencies. However, epochal linearly decreasing/increasing trends are noticed in decadal frequencies or duration of different monsoon disturbances. Decadal frequencies of depressions, CS and depressions are decreasing from 1970-79, till recently ended decade of 1990-99. During recent decade, less than half of the total number of depressions and CS are formed compared with 1970-79. On the other hand, total number of lows are increasing significantly from 1960-69 to recent decade, when more than double the number of lows of 1960-69 are formed.

 

Since Indian Summer Monsoon Rainfall (ISMR) also shows interdecadal variation of below normal and above normal phases, variation of frequencies of different monsoon disturbances and their total durations are also examined in similar time scale to understand their relationship with interdecadal variation of ISMR. Stability and secular nature of these relationships are also examined based on their decadal and 10-year moving Correlation Coefficients (CC) for the period 1890-1999. Relationship of decadal anomaly of their frequencies with interdecadal variation of ISMR shows that number of depressions and CS, are higher than the normal during the above normal ISMR decades and less during the below normal decades of ISMR. Reverse is true for the number of lows. The decadal and 10-years moving CC between ISMR and frequencies of different monsoon disturbances and total monsoon disturbance days clearly show epochal variation of their relationship in interdecadal time scale with ISMR. Hence present study shows that secular variation of CC not only exists between ISMR and its various regional and global parameters used in long range forecast of ISMR but also between ISMR and its main synoptic features e.g., monsoon disturbances.
A study on available soil water during the growth of wheat (Triticum aestivum.L.) at New Delhi
Authors: VERMA I. J. , DAS H. P.
Published: January 2022

Agro-meteorological aspects of wheat (Triticum aestivum.L.) at New Delhi have been studied in this paper. A data set of six years during the crop growing season between 1985 to 1993 has been utilized. The growth period of wheat has been divided into six important growth stages i.e., crown root initiation, tillering, elongation, flowering, grain development and maturity. Water requirement of the crop during various stages of its growth, water use efficiency, crop coefficient and available soil water depletion in the root zone in relation to growth and yield of the crop have been discussed.The study revealed that maximum water is consumed during the elongation stage, nearly 40%, followed by flowering and grain development stage. The crop-coefficient also attains high values (1.1 – 1.2) during elongation stage followed by flowering stage, compared to other growth stages. When available soil water in the root zone depleted by more than 50%, during the critical growth stages of the crop, the yield was adversely affected, upto 18% of the maximum yield.
Evolution of the vertical structure of the atmosphere over North-West India during winter season
Authors: ROY SOMA SEN , ROY BHOWMIK S. K.
Published: January 2022

This paper examines the structural changes of the atmosphere in relation to the passage of Western Disturbances (WD) over Delhi, during winter season using data for the period December 2001 to February 2002. Various thermodynamic and dynamic parameters such as Convective Available Potential Energy (CAPE), Convective Inhibition Energy (CINE), precipitable water content and vorticity over Delhi have been computed based on model analysis fields of India Meteorological Department. Although, a clear increase in the value of CAPE is noticed on most of the days of occurrence of rainfall over the station, this is not a necessary condition for the occurrence of rainfall nor is the amount of rainfall very well correlated to the value of CAPE. The vertical profile of the daily specific humidity reveals that each spell of disturbed weather is preceded and accompanied by deep positive moisture anomalies over the station. The equivalent potential temperature profile shows that this sudden increase in moisture associated with the passage of WD is due to advection of moisture over the station. This again is validated by the synoptic charts, which demonstrate the moisture feed in the boundary layer from the Arabian Sea. The rainfall amount is not very well correlated to the thermodynamic parameters considered. However, rainfall amount is found to have a stronger dependence on positive vorticity field of the lower troposphere. This reflects the stronger dynamic forcing of the rainfall activity over the station. The northward tilt of the ridge line in the lower troposphere in association with rainfall demonstrates that the rainfall activity over the station is primarily caused by the induced surface low in association with the upper level troughs of a WD.  Hence the trigger for the rainfall activity over the station and hence this region, during this season is primarily dynamic in nature and local convective structure of the atmosphere does not play a very determining role in the entire process.
Prediction of summer monsoon rainfall over northwest region of India using an OLR index
Authors: SRIVASTAVA A. K. , RAJEEVAN M.
Published: January 2022

Although, monsoon rainfall (June-September) over the country as a whole has shown some resilience for variations, it has shown remarkable variations over smaller regions viz. over the Northwestern parts of the country.  This study is an attempt to predict seasonal rainfall departure over the Northwest India with the help of an “area averaged OLR anomaly index” associated with the North Atlantic Oscillation (NAO) over parts of North Atlantic Ocean during May. Using the OLR anomaly index developed in this study for the period 1979-2000, a simple regression equation was developed and the performance of the model was evaluated through the “Cross validation” technique.  The Root Mean Square (RMS) error of the model (9.73) was much less than the standard deviation (17.51) of the rainfall over NW India, indicating the skill of the model.
A study of 12th November 2002 cyclonic storm in the Bay of Bengal using Doppler Weather Radar
Authors: BANERJEE S. K. , KUNDU S. K. , SINGH H. A. K.
Published: January 2022

For the first time in India, Doppler Weather Radar (DWR) has been used to track a cyclonic storm, which formed over Bay of Bengal. Selected few radar images of the cyclone have been discussed here to bring out some of the important features of this storm.
Synoptic weather conditions during ARMEX
Authors: HATWAR H. R. , JENAMANI RAJENDRA KUMAR , KALSI S. R.
Published: January 2022

The paper briefly describes the salient synoptic weather conditions that prevailed over Indian subcontinent during the two phases of ARMEX programme along with some documentation of some unique observed features e.g. rainfall, wind and cloud pattern, etc. in intraseasonal time scale with the hope that these inputs will be helpful to other researchers working on ARMEX data for further diagnostic or prognostic studies. There were five intense observation periods (IOP) during ARMEX phase-I (15 June - 16 August 2002) when some parts of West Coast of India received heavy rainfall. Important synoptic systems that prevailed during different IOPs are described. In the ARMEX phase-II (15 March  - 10 April 2003 and 15 May  - 15 June 2003) there was only one IOP which coincided with the onset of monsoon over Kerala and its advance into Coastal Karnataka and Konkan-Goa. The synoptic conditions along with rainfall distribution during this period are described in the paper. A few diagnostic parameters like kinetic energy and outgoing long-wave radiation are also presented.
Convection inhibition energy of the inversion and the suppressed rainfall over the Arabian Sea during July 2002
Authors: BHAT G.  S.
Published: January 2022

All India rainfall was an unprecedented 49% below normal in the peak monsoon month of July in the year 2002. Surface and upper air conditions that prevailed over the Arabian Sea 100-200 km off the west coast of India during July 2002 are described here using the data collected from ORV Sagar Kanya. The total amount of rainfall measured on the ship away from the coast was less than 30 mm in July. The surface conditions were conducive for the development of deep convection in the study area. Radiosonde profiles reveal a complex thermal structure in the vertical and on a majority of the days two prominent inversions were present, one near 800 hPa and the other near 500 hPa. The characteristics of the lower inversion, including the energy barrier that it created for the development of deep clouds is presented. It is shown that on most days during July first half, the convection inhibition energy in the lower inversion layer was much more than that an air parcel ascending moist adiabatically could overcome and the vertical growth of clouds was stunted. The second half of July is intriguing and more than one factor seems to have contributed to suppressed rainfall.
Atmospheric boundary layer during ARMEX-2002 at stationary positions - comparative study
Authors: MORWAL SAVITA  B.
Published: January 2022

A study has been carried out to explore the salient features of the Atmospheric Boundary Layer (ABL) over the eastern Arabian Sea regions during the summer monsoon season of 2002. For this purpose the aerological observations and surface meteorological observations collected onboard ORV Sagar Kanya during the Phase-I of ARMEX-2002 for the two stationary positions (30 June-10 July and 22 July – 5 August 2002) have been considered. Utilizing these observations the vertical structure of the Atmospheric Boundary Layer and the temporal variation of different surface parameters has been investigated. The results showed prominent diurnal variation in different surface meteorological parameters. The study also revealed that there is no influence of the offshore trough on the vertical structure of the Atmospheric Boundary Layer. The ABL showed multilayered structure with shallow sub cloud layer, deep cloud layer, weak stable layer and the ABL extending up to higher levels in the presence of the cyclonic circulation (2-4 August 2002). Whereas the ABL is associated with deep sub cloud layer, shallow cloud layer, strong stable layer (inversion layer) and shallow ABL depth under the influence of weak offshore trough observed along the west coast of India.
Wave hindcast for the Indian Ocean region covering the period of ARMEX-I (June-August 2002)
Authors: SWAIN J. , DE CHANCHAL , SINGH M. K. , VIJAYAKUMAR D. , VENKITACHALAM N. R.
Published: January 2022

Wave hindcast has been carried out for the Indian Ocean (30°-120° E, 30° S - 30° N) region covering ARMEX, PHASE-I observational programme (June-August 2002). The analysed wind fields at six hourly intervals provided by National Centre for Medium Range Weather Forecast (NCMRWF), New Delhi is used to drive the third generation wave model “WAM” (1.5° × 1.5° resolution). The primary objectives of this hindcast, is to provide the sea-state information for the period of ARMEX which would help in research applications and to implement WAM operationally for the Indian Ocean to meet various requirements in future. The model was earlier validated using the Ship Borne Wave Recorder (SBWR) data collected onboard INS Sagardhwani, the visual estimates reported in the Indian Daily Weather Report (IDWR) published by the India Meteorological Department (IMD) and time-series buoy measurements of National Institute of Ocean Technology (NIOT).  The model outputs are compared with the available buoy data of NIOT. The comparisons between the hindcast wave parameters and measurements reveal that the model could predict wave heights with errors ranging from ±12% to ±20%.
Ensino híbrido e ambiente virtual de aprendizagem na aula de inglês: a perspectiva de alunos do ensino médio técnico
Authors: DE ARAUJO Thamiris OLIVEIRA , Bartolo Mariana Guedes
Published: January 2022

Esta pesquisa busca criar inteligibilidade sobre a introdução de um ensino híbrido da língua inglesa no contexto do ensino médio técnico de uma escola pública. A proposta pedagógica incluiu a realização de exercícios diários em aplicativos educacionais e de tarefas específicas para revisão e aprofundamento de conteúdo das aulas postadas periodicamente em um ambiente virtual de aprendizagem. Assim, a fundamentação teórica inclui os seguintes temas: ensino híbrido (GARRIDO, 2009; GEBRAN, 2009; BACICHI e MORAN, 2015; MORAN, 2015), ambientes virtuais de aprendizagem (DILLENBOURG, SCHNEIDER e SYNTEKA, 2002) e learning management system (BERKING e GALLAGHER, 2013). Com o objetivo de investigar a utilização e avaliação dos recursos on-line integrados à disciplina a partir da perspectiva dos alunos, foi conduzido um estudo de caso de natureza etnográfica (ANGROSINO, 2005; HARRIS, 2008; YIN, 2009), contando com entrevistas presenciais e registros dos conteúdos (atividades e recursos) do ambiente virtual de aprendizagem para a geração de dados. Os resultados indicam que os estudantes avaliam o ensino híbrido positivamente, mas privilegiam efetuar as tarefas postadas no ambiente virtual e não as tarefas diárias dos aplicativos educacionais.
Atividades de referenciação: o uso de marcadores temporais em narrativas afiliadas ao lendário amazônico
Authors: Maia Moura Heliud Luis
Published: January 2022

Este trabalho tem por objetivo analisar os marcadores temporais constitutivos dos processos de referenciação em narrativas afiliadas ao lendário amazônico. A referenciação ocupa um lugar privilegiado nos estudos da linguagem, especificamente no âmbito dos estudos da cognição. As atividades referenciais envolvem processos sociocognitivos baseados em estruturas de conhecimento atreladas às experiências sociointerativas dos sujeitos. Tomo como referencial as postulações de Benveniste (2006), Fiorin (2002), Koch (2004, 2006), Marcuschi (2007) e Moura (2013). Marcadores temporais são elementos discursivos estruturantes das atividades textuais. Se isto acontece em textos dissertativos ou similares, pode constituir-se como um dos recursos principais de construção de textos narrativos, nos quais os fatores temporais prestam-se a contextualizar fatos e eventos, pontualizando a presença do locutor quanto à forma de localização temporal da atividade discursiva, de maneira que o leitor/ouvinte/interpretante possa compartilhar (de)/compreender o (trans)curso lógico-temporal, consoante princípios de aceitabilidade, por meio do que o produtor consegue dar sentido ao texto. Analiso dezessete narrativas referentes a quatro temáticas, concernentes às entidades Boto, Cobra, Matintaperera e Curupira. Diante dos fenômenos observados, constatei que as atividades referenciais encontram formas específicas de se realizar nos textos narrativos sob investigação, nos quais os marcadores temporais atuam como elementos imprescindíveis à construção das atividades sociodiscursivas.
Provérbios e publicidade: percursos discursivos de sentido
Authors: Fregonesi de Moraes Anita Luisa
Published: January 2022

Este artigo visa analisar como se constituem os sentidos dos enunciados proverbiais inseridos em textos publicitários. Para fundamentar nossas análises, articulamos a teoria enunciativo-discursiva de Maingueneau e a perspectiva dialógica da linguagem proposta por Bakhtin que permitem descrever os fatos da língua verificados no fio discursivo de textos publicitários e compreender os efeitos de sentido produzidos pelo cruzamento do interdiscurso com o intradiscurso por meio do trabalho da memória. Considerando ainda que, de acordo com a Análise do Discurso, os processos que constituem a linguagem são histórico-sociais, e o discurso, conforme Orlandi (1999), é um “efeito de sentido entre interlocutores”, verificamos que os enunciados proverbiais, apesar de serem considerados típicos da oralidade e da cultura popular, são usados pela mídia propagandística escrita, que tem como alvo um público letrado visto como consumidor em potencial. Nossas análises evidenciam que os provérbios, subvertidos ou não em seu sentido original e em sua materialidade linguística, participam como estratégias discursivas de convencimento, pois transmitem a voz do povo, via mídia impressa. Assim, a reiteração desses enunciados, que representam um arquivo estabilizado, dá lugar para sentidos outros, embora o sujeito enunciador mantenha a ilusão de ser a origem do dizer.
Português como LE/L2 na UFSCar: Mapeando os registros sobre extensão, ensino e pesquisa
Authors: Granato Matheus , Yokota Rosa
Published: January 2022

Neste artigo, apresenta-se mapeamento das atividades de extensão, ensino e pesquisa na área de Português como Língua Estrangeira e como Segunda Língua (PLE/L2) realizadas na Universidade Federal de São Carlos (UFSCar). O estudo visa contribuir para a compreensão do processo de institucionalização da área na UFSCar e do impacto de políticas linguísticas nacionais relacionadas com o PLE/L2 no âmbito local da instituição, a partir das contribuições de Furtoso (2015); Rocha (2019); Bulla, Kuhn (2020); Brasil (2021); Scaramucci, Bizon (2020). Para tanto, fez-se um levantamento das ações documentadas sobre a extensão, o ensino e a pesquisa de 1994 a 2021, além da busca pelas pesquisas de graduação e pós- graduação disponibilizadas no Repositório Institucional (RI) da universidade. Verificou-se que, na UFSCar, as atividades de extensão iniciaram as ações na área de PLE/L2, que houve a incorporação do seu ensino no âmbito da formação de professores e de tradutores-intérpretes de libras e que a pesquisa sobre o tema acompanhou a expansão dos cursos de graduação e pós- graduação na instituição.
Desenvolvimento da compreensão oral em Português Língua Segunda com recurso a materiais semi-autênticos
Authors: Tang Yanping
Published: January 2022

A compreensão oral assume um papel crucial no desenvolvimento da competência comunicativa de uma língua estrangeira. É também considerada como a competência mais difícil de aprender devido à sua natureza intrínseca. Para o ensino-aprendizagem da compreensão oral na sala de aula, os materiais didáticos de compreensão oral constituem um elemento indispensável na realização de atividades. Nesse sentido, com recurso a metodologia de investigação-ação, foi desenvolvido um projeto junto de alunos de nível A1.2, no âmbito do estágio pedagógico do Mestrado em Português Língua Segunda/Língua Estrangeira, da Faculdade de Letras da Universidade do Porto, com o objetivo principal de desenvolver a compreensão oral dos aprendentes de Português Língua Segunda, através da criação dos recursos semi-autênticos. Analisando os resultados obtidos, podemos afirmar que, i.) a aplicação do modelo da aula centrada na compreensão oral - pré-atividade, atividade e pós-atividade - contribui não só para o sucesso da atividade de compreensão oral, como promove também o desenvolvimento de outras competências, sobretudo a competência linguística nas vertentes da expressão e interação oral; ii.) os materiais áudio e audiovisuais criados ao longo da intervenção pedagógica constituem uma mais-valia para o enriquecimento de materiais didáticos destinados aos aprendentes de Português Língua Segunda.
Como os estudantes em mobilidade ERASMUS na Universidade de Aveiro percebem as variedades do português?
Authors: Barbosa Juliana Bertucci , De Freitas Velúnia Tristão
Published: January 2022

Os estudantes em mobilidade na Universidade de Aveiro cursam pelo menos uma disciplina de Português como Língua Estrangeira durante o período de intercâmbio. Mesmo que a variedade ensinada seja a variedade europeia, esses alunos têm contato com outras variedades do português. Este trabalho investigou quais são as atitudes e percepções linguísticas desses alunos em relação a variedade brasileira e europeia. Para que isso fosse possível, elaboramos um teste de atitude e percepção linguística, com base na teoria variacionista, e aplicamos através da plataforma Google Forms. Os níveis linguísticos mais suscetíveis à avaliação dos estudantes foram o fonológico, lexical e monitoramento estilístico (grau de formalidade).  As expressões avaliativas associadas mais frequentemente à variedade brasileira foram “mais fácil”, “mais clara” e “mais suave” e as expressões mais frequentemente associadas à variedade europeia foram “mais difícil”, “menos clara” e “mais formal”. Além disso, os estudantes expressaram consciência acerca da variedade linguística e não demonstraram atitudes e avaliações com preconceito linguístico.
Experiências exitosas no ensino de português para estrangeiros no ISF-UFAL
Authors: Oliveira Eliane Vitorino de Moura , Rocha Raul De Carvalho , Cavalcante Ringo Star De Holanda , SILVA Waldenia Maria Da
Published: January 2022

Apresenta-se, neste artigo, um relato de experiência docente realizada em dois cursos de ensino de Português para Estrangeiros, no âmbito do Idioma sem Fronteiras (ISF) da Faculdade de Letras–UFAL, em que língua e cultura, ou língua-cultura, nas palavras de Mendes (2015), são trabalhadas associadamente, tanto no ensino de gêneros acadêmicos, quanto nas abordagens apresentadas em filmes com temáticas Nordestinas. Objetivamos, com o trabalho, refletir sobre a relevância do olhar altruísta sobre a língua-cultura do outro, e levar o outro a nos enxergar sob a mesma lente. A fundamentação se dá nas teorias da Linguística Aplicada, em sua visão sobre o ensino-aprendizagem de línguas, em especial à relacionada ao Português como Língua Estrangeira (PLE) e a partir de uma pesquisa qualitativa, que analisa o ambiente natural da sala de aula, utilizando a observação como técnica.  Com as discussões, conclui-se que a prática pedagógica utilizada, nomeadamente a abordagem intercultural em aulas dialogadas e reflexivas, foi relevante para a concreta aprendizagem dos alunos de outras línguas.
A produção de recursos educacionais abertos na formação de professores de português como língua adicional
Authors: Chichorro Baldin Fernanda Deah , Cordeiro Elisa Novaski , Albuquerque Jeniffer
Published: January 2022

Este artigo tem por objetivo contextualizar e expor o trabalho de produção de material didático como Recurso Educacional Aberto (REA) em uma das disciplinas de Ensino de Português para Falantes de Outras Línguas (PFOL), do Curso de Letras Inglês da Universidade Tecnológica Federal do Paraná (UTFPR), campus Curitiba (CT), atentando para a importância dessa produção na formação de professores de português como língua adicional. Interessa-nos discutir a relevância da educação aberta por meio de materiais que se configurem como REAs, a agência dos alunos na produção de materiais didáticos, a apropriação por parte deles desse componente na sua formação como professores, conformando, desse modo, o panorama teórico-metodológico da construção dessa disciplina. Para tanto, descrevemos como a disciplina em questão está organizada e trazemos algumas reflexões acerca da literatura e premissas que embasam a ementa desta e como o tal organização se entrelaça com a práxis do docente em formação inicial.
Sexualidades “invertidas” e transgressoras: Bom-Crioulo e o determinismo no naturalismo brasileiro
Authors: Wels Erica Schlude , Germano Aline de Freitas
Published: January 2022

O objetivo do presente artigo é, primeiramente, reunir algumas visões da historiografia literária brasileira, acerca da obra Bom-Crioulo, de Adolfo Caminha (1991 [1895]). A despeito da polêmica que o cercou, quando da sua publicação, o romance é visto com um dos pioneiros, em língua portuguesa, no tratamento do homoerotismo. Nossa hipótese principal é a centralidade da temática da sexualidade, compondo um trágico triângulo amoroso marcado tanto por avanços – herói negro, romance interracial, denúncia dos castigos físicos na marinha, quanto por retrocessos, ou permanências – insistência numa postura ativa (tipo masculino, como Amaro) versus passiva (tipo feminino, como o jovem grumete Aleixo). Assim,  a obra embaralha os gêneros (Amaro – Aleixo – Carolina), para em seguinda sustentar certos essencialismos ao demarcar tipos masculinos e femininos. Tal postura é condizente com o arcabouço teórico científico da época, base do ideário naturalista, presente no pensamento de Sigmund Freud, aqui sintetizado. Nas chamadas “inversões”, assim como nos conceitos de “pulsão” e “libido”, teorizados por Freud, ecoam as descobertas de Charles Darwin.
Acesso ao Transplante de Medula Óssea por meio do Tratamento Fora do Domicílio (TFD)
Authors: Escorsim Silvana Maria , Rosa Amanda Rachel
Published: January 2022

O presente artigo é resultado de um estudo sobre o acesso dos usuários ao Transplante de Medula Óssea (TMO) do Complexo Hospital de Clínicas da UFPR, no ano de 2018, com a utilização dos recursos do Tratamento Fora do Domicílio (TFD) e objetivou analisar o impacto desses recursos na permanência dos usuários fora de seu domicílio para a realização do TMO. Utilizou-se a metodologia quanti-qualitativa, através da aplicação da pesquisa documental e de campo. Os resultados quantitativos mostraram que 51,9% acessaram satisfatoriamente os recursos do TFD, correlatos aos princípios doutrinários do Sistema Único de Saúde, contudo, 48,1% dos usuários acessaram parcialmente ou não tiveram acesso aos mesmos, o que impactou desfavoravelmente, segundo dados qualitativos, suscitando adversidades no período de tratamento fora do domicílio, o que evidencia a omissão de alguns municípios na concessão integral do direito ao TFD.
Indígenas no espaço urbano e particularidades do Nordeste
Authors: Silva Elizângela Cardoso de Araújo , Sossa Codjo Olivier
Published: January 2022

No contexto das expressões da questão urbana no Brasil, a desigualdade, o desemprego e acesso à renda atingem as famílias indígenas que vivem nas cidades. Neste artigo são dos dados das condições sociais da vida indígena no contexto urbano da região Nordeste, levantados e analisados por um Estatístico do povo Adja (Benin, África) e uma Assistente Social, indígena do povo Pankararu (Brasil, América do Sul). As análises resultam do levantamento documental, bibliográfico associado a elementos de relato de experiência dos autores deste artigo. Constata-se a existência de elementos que caracterizam situações de empobrecimento indígena no contexto urbano no Nordeste do Brasil e demandas por ações de políticas sociais.
O Direito entre normalidade e exceção: o papel das cláusulas gerais em “Sobre os Três Tipos de Pensamento Jurídico” de Carl Schmitt
Authors: Esteves Marcos Guilhen , Kempfer Marlene
Published: January 2022

Conhecida é, no meio acadêmico, a polêmica entre Kelsen e Schmitt acerca do papel do direito na conformação da sociedade e a sua relação com instâncias do poder político, econômico e social. Em Sobre os Três Tipos de Pensamento Jurídico, Schmitt critica fortemente o positivismo kelseniano, cujo formalismo teria conduzido ao descolamento entre realidade social e norma jurídica. Ao final do texto, Schmitt conclui pela superação do positivismo e indica como prova da sua afirmação a proliferação de cláusulas gerais nos textos jurídicos, defendendo que tais cláusulas possibilitam não só a introdução de valores sociais no direito, mas também a construção de um modelo de pensamento jurídico completamente novo. O objeto do presente artigo é analisar a defesa schmittiana das cláusulas gerais, principalmente no que concerne à sua função e papel no direito. O propósito justificador da análise aqui empreendida é lançar novos olhares ao tratamento das cláusulas gerais pelo direito brasileiro, a partir de aproximações com o tratamento vislumbrado por Schmitt, de modo a questionar o viés emancipatório que hoje se atribui a elas.
As alterações na lei de introdução às normas do direito brasileiro e seu influxo no direito administrativo
Authors: Mialhe Jorge Luís , Reis Augusto Rigamonti Thiago
Published: January 2022

A Lei de Introdução às Normas do Direito Brasileiro (LINDB) é reconhecida enquanto a norma das normas, pois que confere diretrizes e balizas relevantes relacionadas à vigência, eficácia e interpretação dos diplomas normativos no sistema jurídico nacional, inclusive no que atine às suas fontes e técnicas de integração, delimitando a aplicação de normas no tempo e no espaço. Foi relevante e recentemente contemplada com acréscimos provenientes da Lei Federal n.º 13.655/2018, que, promulgada, acresceu à LINDB dispositivos precipuamente relacionados à aplicação e interpretação de normas incidentes em Direito Público, especialmente no que se relaciona ao exercício do controle da Administração Pública – e de seus agentes – pelos órgãos detentores de tais competências. Este trabalho, sob baliza doutrinária, busca enfatizar as alterações promovidas, sob o método dedutivo.