AndreaBozzo/ceres-open-data-index huggingface dataset:
NEW RSW & Wall Coarse Tet Only Grid

This is the RSW Coarse Tet Only grid with the root viscous tunnel wall.  This grid is for a node-based unstructured solver.

Quad Surface Faces=         0
Tria Surface Faces=    119854
Nodes             =   2861927
Total Elements    =  16981322
Hex Elements      =         0
Pent_5 Elements   =         0
Pent_6 Elements   =         0
Tet Elements      =  16981322
BL Tet Elements   =  15310361

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Discovering Precursors to Aviation Safety Incidents: KDD 2010

Modern aircraft are producing data at an unprecedented rate with hundreds of parameters being recorded on a second by second basis. The data can be used for studying the condition of the hardware systems of the aircraft and also for studying the complex interactions between the pilot and the aircraft. NASA is developing novel data mining algorithms to detect precursors to aviation safety incidents from these data sources. This talk will cover the theoretical aspects of the algorithms and practical aspects of implementing these techniques to study one of the most complex dynamical systems in the world: the national airspace.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
AMSR-E/AMSR2 Unified L3 Daily 25 km Brightness Temperatures & Sea Ice Concentration Polar Grids V001

This data set reports average daily horizontally and vertically polarized brightness temperatures and sea ice concentrations on 25 km resolution north and south polar stereographic grids. The data are derived from observations acquired by the Advanced Microwave Scanning Radiometer (AMSR) for EOS (AMSR-E) and AMSR2 instruments that have been spatially resampled by the Japan Aerospace Exploration Agency (JAXA) to unify the AMSR-E and AMSR2 missions.

Brightness temperatures are available at 6.9 GHz, 10.7 GHz, 18.7 GHz, 23.8 GHz, 36.5 GHz and 89.0 GHz for ascending and descending orbits, and as a single daily average. Sea ice concentrations are generated with the Enhanced NASA Team (NT2) algorithm; a separate variable reports the daily sea ice concentration difference between the legacy AMSR Basic Bootstrap Algorithm (ABA) and the NT2.

Tags: cryosphere, earth-science, microwave, sea-ice, spectral-engineering
Organization: National Aeronautics and Space Administration
OCO-2 Level 0 spacecraft attitude data V11 (OCO2_Att) at GES DISC

Version 11 is the current version of the data set. Older versions will no longer be available and are superseded by Version 11.

The Orbiting Carbon Observatory is the first NASA missiondesigned to collect space-based measurements of atmospheric carbon dioxidewith the precision, resolution, and coverage needed to characterize theprocesses controlling its buildup in the atmosphere. The OCO-2 project uses the LEOStar-2 spacecraft that carries a single instrument. It incorporates three high-resolution spectrometers that make coincident measurements ofreflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and inmolecular oxygen (O2) A-Band at 0.76 micrometers . Each band has 1016 spectralelements.This product contains pointing angles of the spacecraft for each orbit.It is generated using the following input data:+ APID 20 telemetry+ Orbit Boundary File.It is essential in generating the Geolocations of the science data.

Tags: earth-science, platform-characteristics, spectral-engineering
Organization: National Aeronautics and Space Administration
Asynchronous Mid-Value Select in Hybrid SAL

The following SAL model is an abstraction of a module that implements a fault-tolerant mid-value select on asynchronously produced inputs. This is part of a larger system that has both discrete and continuous dynamics, Our goal is to model the full system using Hybrid SAL and we have adapted the timed relational abstraction techique supported by Hybrid SAL to abstract asynchronous sampling of continous signals. This approach will be fully automated in future releases of Hybrid SAL.

The following model (05/14/2012) shows the resulting abstraction, for the aysnchronous mid-value select module and includes proofs of various properties.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Aqua MODIS Level-3 Global Mapped 11µm Day/Night Sea Surface Temperature (SST) - Near Real-time (NRT) Data, version R2019.0

The Ocean Biology DAAC produces near real-time (quicklook) products using the best-available combination of ancillary data from meteorological and ozone data. As such, the inputs and the calibration used are less than optimal. Quicklook products provide a snapshot of the data during a short time period within a single orbit.

Tags: earth-science, national-geospatial-data-asset, ngda, ocean-temperature, oceans
Organization: National Aeronautics and Space Administration
GPM GROUND VALIDATION DC-8 CAMERA NADIR GCPEX V1

The GPM Ground Validation DC-8 Camera Nadir GCPEx dataset contains geo-located, visible-wavelength imagery of the ground obtained from the nadir camera aboard the NASA DC-8 in Canada during the Cold-season Precipitation Experiment (GCPEx). GCPEx addressed shortcomings in the GPM snowfall retrieval algorithm by collecting microphysical properties, associated remote sensing observations, and coordinated model simulations of precipitating snow. These data sets were collected to aid in the achievement of the over arching goal of GCPEx which is to characterize the ability of multi-frequency active and passive microwave sensors to detect and estimate falling snow. The data is available only for February 20, 2012, a clear-air flight day. DC-8 Camera nadir data may be useful for determining snow cover and lake ice cover for emissivity studies. The dataset also includes, for convenience and reproducibility, aircraft navigation information and ground temperatures to aid in emissivity retrievals.

Tags: earth-science, land-surface, platform-characteristics, spectral-engineering, surface-thermal-properties, visible-wavelengths
Organization: National Aeronautics and Space Administration
AMSR-E/Aqua L2B Global Swath Ocean Products derived from Wentz Algorithm V002

This daily Level-2B swath data set includes Sea Surface Temperature (SST), Near-Surface Wind Speed, Columnar Water Vapor, and Cloud liquid Water data arrays, and was used as input to generate the following daily, weekly, and monthly Level-3 gridded ocean products;  AE_DyOcn, AE_WkOcn, and AE_MoOcn.

Tags: atmosphere, atmospheric-water-vapor, atmospheric-winds, clouds, earth-science, ocean-temperature, ocean-winds, oceans
Organization: National Aeronautics and Space Administration
BUV/Nimbus-4 Level 2 High-Density Ozone Data V005 (BUVN4L2HDBUV) at GES DISC

The Nimbus-4 BUV Level 2 High-Density Ozone Data collection contains the vertical distribtuion and total column amount of ozone, as well as the full set of ancillary information. Each file contains total ozone, reflectivities, ozone mixing ratios and layer ozone amounts measured every 32 seconds during the daylit portion of an orbit. Mixing ratios are given at 19 levels: 0.3, 0.4, 0.5, 0.7, 1, 1.5, 2, 3, 4, 5, 7, 10, 15, 20, 30, 40, 50, 70 and 100 mbar. Layer ozone amounts are provided at 12 layers: 0.24, 0.49, 0.99, 1.98, 3.96, 7.92, 15.8, 31.7, 63.3, 127, 253, and 1013 mbar (bottom of layer value). The data collection also contains quality flags, orbital information, and housekeeping data.

The data were originally created on IBM 360 machines and archived on magnetic tapes. The data have been restored from the tapes and are now archived on disk in their original IBM binary file format. Each file contains about one orbit of data. The files consist of data records each with two hundred and seven 4-byte words. The first record is the header record, followed by a series of data records, and ends with several trailer records that pad out the original blocked records. A typical orbit file is about 96 kB in size.

The BUV instrument was operational from April 10, 1970 until May 6, 1977. In July 1972 the Nimbus-4 solar power array partially failed such that BUV operations were curtailed. Thus data collected in the later years was increasingly sparse, particularly in the equatorial region.

This product was previously available from the NSSDC as the Total and Profile Ozone Data (HDBUV) with the identifier ESAC-00030 (old ID 70-025A-05Q).

Tags: atmosphere, atmospheric-chemistry, earth-science
Organization: National Aeronautics and Space Administration
Deterministic Compilation of Temporal Safety Properties in Explicit State Model Checking

The translation of temporal logic specifications constitutes an essen- tial step in model checking and a major influence on the efficiency of formal verification via model checking. We devise a new explicit-state translation of Lin- ear Temporal Logic to automata for the class of LTL specifications that describe safety properties, arguably the most used formal specifications in real-world sys- tems. By exploiting the inherent determinism in safety specifications, we can build deterministic Promela never claims that accept only the bad prefixes of the safety specification. In contrast to previous works, we focus on compilation to never claims rather than simply automata and measure Spin model-checking time separately from compilation time and automata size. An extensive experi- mental evaluation over a space of configurations demonstrates that our new trans- lation consistently results in better model-checking performance, for a large array of benchmarks, over the best current translation.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Autonomous Deep-Space Optical Navigation Project

&lt;p&gt;Every one of the future exploration architectures being considered by NASA have, at their core, the need to rendezvous and dock with other vehicles or bodies.&amp;nbsp; Future manned vehicles need to be able to do so with both cooperative and uncooperative vehicles and objects.&amp;nbsp; To this end, the sensors being considered are all optical-based.&amp;nbsp; In fact, passive sensors, such as IR cameras and visual cameras, are at the heart of any exploration architecture.&amp;nbsp; There is a need for the onboard systems to be able to use the images provided by these sensors to rendezvous and dock/capture these objects.&amp;nbsp; Therefore, this project will develop this capability to operate around a variety of objects, without a priori knowledge of their geometry.&amp;nbsp; In particular, a technology called &amp;lsquo;optical flow&amp;rsquo; or &amp;lsquo;visual odometry&amp;rsquo; (VO), will be harnessed to develop a robust on-board capability using passive sensors; of course, if active sensors are available, they will be used as well. In fact, we will also apply this technique to navigating around a cratered object (such as an asteroid). This project will enhance the Agency&amp;rsquo;s ability to operate at distant locations, without the need for ground intervention.&lt;/p&gt;&lt;p&gt;To date, all of the on-board navigation development performed has focused on either Low Earth Orbit (LEO) or Low Lunar Orbit (LLO).&amp;nbsp; We seek to advance deep-space navigation technology by focusing this Internal Research and Development (IRAD) upon rendezvous and navigation in a weak gravity environment, either at Lagrangian point 2 (L2) or around an asteroid.&amp;nbsp; Of course, this will apply to any destinations that have a strong gravity field as well.&amp;nbsp; As well, the technology developed in this Internal Research and Development will apply to rendezvousing with vehicles such as ISS.&amp;nbsp; We choose to focus our IRAD effort on the navigation algorithms and software for the ARCM DRO Mission, thus broadening our scope, maintaining our cutting-edge capability, and advancing US manned space exploration.&amp;nbsp; The goal is to be flexible enough to meet the needs of the NASA vision, as it applies to any destination the Agency chooses to embark upon.&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;

Tags: active, johnson-space-center, project
Organization: National Aeronautics and Space Administration
USGS Global Forest Observations Initiative (GFOI) Gabon

The Global Forest Observations Initiative (GFOI) is an initiative of the inter-governmental Group on Earth Observations (GEO) that aims to:

foster the sustained availability of observations for national forest monitoring systems; support governments that are establishing national systems by providing a platform for coordinating observations, providing assistance and guidance on utilizing observations, developing accepted methods and protocols, and promoting ongoing research and development; and work with national governments that report into international forest assessments (such as the global Forest Resources Assessment (FRA) of the Food and Agriculture Organization, FAO) and the national greenhouse gas inventories reported to the UN Framework Convention on Climate Change (UNFCCC) using methods of the Intergovernmental Panel on Climate Change (IPCC).

Tags: agriculture, earth-science, forest-science
Organization: National Aeronautics and Space Administration
CDDIS_VLBI_data

Very Long Baseline Interferometry (VLBI) is a geometric technique: it measures the time difference between the arrival at two Earth-based antennas of a radio wavefront emitted by a distant quasar. VLBI precisely locates points on Earth by comparing radio signals from a quasar radio source located in deep space received at different times at different Earth ground stations. This method gives relative positions of the Earth stations. VLBI data can be used to calculate information on Earth rotation, length of day, polar motion, baseline and velocities of stations. Products generated by VLBI contribute to research in many areas, including solid Earth, tides, studies of the vertical, fundamental astronomy, and VLBI technique improvement.

Tags: nasa
Organization: National Aeronautics and Space Administration
ACES TRIGGERED DATA V1

The ALTUS Cloud Electrification Study (ACES) was based at the Naval Air Facility Key West in Florida. During August 2002, ACES researchers conducted overflights of thunderstorms over the southwestern corner of Florida. For the first time in NASA research, an uninhabited aerial vehicle (UAV) named ALTUS was used to collect cloud electrification data. Carrying field mills, optical sensors, electric field sensors and other instruments, ALTUS allowed scientists to collect cloud electrification data for the first time from above the storm, from its birth through dissipation. This experiment allowed scientists to achieve the dual goals of gathering weather data safely and testing new aircraft technology. This dataset consists of data collected from the following instruments: Slow/Fast antenna, Electric Field Mill, Optical Pulse Sensors, Searchcoil Magnetometer, Accelerometer, and Gerdien Conductivity Probe. These data were collected at 200KHz from the first 16 telemetry items collected on the aircraft, were initiated by an operator selected trigger (e.g. DOPS), and continued collecting for as long as the trigger continued.

Tags: atmosphere, atmospheric-electricity, atmospheric-winds, earth-science, geomagnetism, radio-wave, solid-earth, spectral-engineering, weather-events
Organization: National Aeronautics and Space Administration
Soil Moisture Active Passive (SMAP) L1-L3 Ancillary GEOS Data V001

This ancillary SMAP product contains three dynamic GMAO GEOS-5 modeled data sets. Each data set contains surface and atmospheric parameters pertinent to SMAP provided in 1) hourly, 2) 3-hour, and 3) averaged over 3-hour intervals.

Tags: atmosphere, atmospheric-ocean-indicators, atmospheric-temperature, climate-indicators, earth-science
Organization: National Aeronautics and Space Administration
GPM Ground Validation NASA W-band Aircraft Cloud Radar (WACR) C3VP V1

The GPM Ground Validation NASA W-band Airborne Cloud Radar (WACR) C3VP dataset consists of calibrated co- and cross-polarized radar reflectivity at 94 GHz during the Canadian CloudSat/CALIPSO Validation Project (C3VP) field campaign. The campaign took place in southern Canada in support of multiple science missions, including the NASA GPM mission, in order to improve the modeling and remote sensing of winter precipitation. The WACR is used for cloud sensing and microphysics. During C3VP, the WACR was deployed as a surface-based, zenith-pointing instrument in the Cloud Radar Trailer at the Centre for Atmospheric Research Experiments (CARE) facility in Ontario, Canada. The data include radar reflectivities in zenith-pointing orientation at the CARE facility. The dataset files are available in netCDF format from October 30, 2006 through March 2, 2007.

Tags: earth-science, radar, spectral-engineering
Organization: National Aeronautics and Space Administration
TRMM Combined Precipitation Radar and Microwave Imager Rainfall Profile L2 1.5 hours V7 (TRMM_2B31) at GES DISC

The TRMM combined algorithm (2B31) combines data from the TMI and PR to produce the best rain estimate for TRMM. This combined rainfall product is derived from vertical hydrometeor profiles using data from the PR radar and TMI. It also includes computed correlation-corrected, mass-weighted, mean drop diameter and its standard deviation, and latent heating data.

Pre-Boost (before 7 August 2001): Temporal Resolution: 91.5 min/orbit ~ 16 orbits/day; Swath Width: 215 km; Horizontal Resolution: 4.3 km 

Post-Boost (after 24 August 2001): Temporal Resolution: 92.5 min/orbit ~ 16 orbits/day; Swath Width: 247 km; Horizontal Resolution: 5.0 km

Tags: atmosphere, clouds, earth-science, precipitation
Organization: National Aeronautics and Space Administration
HIRENASD Experimental Data, Static Cp Plots and Data files

Tecplot (ascii) and matlab files are posted here for the Static pressure coefficient data sets. 

To download all of the data in either tecplot format or matlab format, you can go to https://c3.nasa.gov/dashlink/resources/485/

Please consult the documentation found on this page under Support/Documentation for information regarding variable definition, data processing, etc.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010)

The USGS and the NGA have collaborated on the development of a notably enhanced global elevation model named the GMTED2010 that replaces GTOPO30 as the elevation dataset of choice for global and continental scale applications.

The new model has been generated at three separate resolutions (horizontal post spacings) of 30 arc-seconds (about 1 kilometer), 15 arc-seconds (about 500 meters), and 7.5 arc-seconds (about 250 meters). This new product suite provides global coverage of all land areas from lat 84°N to 56°S for most products, and coverage from 84°N to 90°S for several products. Some areas, namely Greenland and Antarctica, do not have data available at the 15- and 7.5-arc-second resolutions because the input source data do not support that level of detail. An additional advantage of the new multi-resolution global model over GTOPO30 is that seven new raster elevation products are available at each resolution.

Tags: earth-science, erosion-sedimentation, geomorphic-landforms-processes, land-surface, land-use-land-cover, landscape, soils, surface-radiative-properties, topography
Organization: National Aeronautics and Space Administration
Jason-1 SGDR version E NetCDF

The Sensory Geophysical Data Record (SGDR) files contain full accuracy altimeter data, with a high precision orbit (accuracy ~1.5 cm). The instruments on Jason-1 make direct observations of the following quantities: altimeter range, significant wave height, ocean radar backscatter cross-section (a measure of wind speed), ionospheric electron content (derived by a simple formula), tropospheric water content, mean sea surface, and position relative to the GPS satellite constellation. The SGDR contain all relevant corrections needed to calculate the sea surface height. It also contains the 20Hz waveforms that are required for retracking.  The SGDR is an expert level product, if you do not require the waveforms then the GDR/GPN or GPR will be more suited for your needs.

Tags: earth-science, ocean-waves, oceans, sea-surface-topography
Organization: National Aeronautics and Space Administration
Comparative Analyses of Operational Flights

This report describes a cooperative experiment conducted by ONERA and NASA, with the support of Airbus S.A.S. and easyJet Airline Company, Ltd. The study evaluated the benefits of two distinctly different methodologies for analyzing the same set of digital flight-recorded data. The experiment analyzed a set of easyJet commercial-flight data with both typical Flight Operational Quality Assur-ance (FOQA) software of an airline (in this case, AirFASE, developed by Airbus and Teledyne) and The Morning Report of Atypical Flights (developed by NASA). The study demonstrated the feasibility and potential value of using The Morning Report tool in conjunction with the FOQA airline tool and also showed the complementarities of the results produced by the two approaches.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
ASE SIM Workshop WEBCAST Link & Presentation Slides

<a href="http://nia-mediasite.nianet.org/NIAmediasite100/Catalog/pages/catalog.aspx?catalogId=3c58920b-1b8d-4163-becd-6354c7352fd9">Link to Aeroservoelasticity Simulation Workshop WEBCAST </a>

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
SENTINEL-1B_SINGLE_POL_GRD_MEDIUM_RES

Sentinel-1B Single-pol ground projected medium resolution images

Tags: agriculture, biosphere, coastal-processes, cryosphere, earth-science, erosion-sedimentation, forest-science, frozen-ground, geomorphic-landforms-processes, glaciers-ice-sheets, land-surface, land-use-land-cover, landscape, ocean-waves, ocean-winds, oceans, sea-ice, snow-ice, solid-earth, surface-water, tectonics, terrestrial-ecosystems, terrestrial-hydrosphere, topography
Organization: National Aeronautics and Space Administration
Prognostics in the Control Loop

The term Automated Contingency Management (ACM) has been used to describe intelligent systems capable of mission re-planning and control reconfiguration in the presence of a current health state diagnosis. While a diagnostics driven ACM capability designed to optimize multi-objective performance criteria remains a significant technical challenge, it cannot hope to overcome the fact that it will always be a reactive paradigm. This paper, therefore, introduces an automated contingency management paradigm based on both current heath state (diagnosis) and future health state estimates (prognosis). Including Prognostics in the control loop poses at least two additional challenges to ACM. First, future state prediction will, in general, have uncertainty that increases as the prediction horizon increases so adaptive prognosis routines that manage uncertainty are critical. Secondly, a warning period afforded by prognosis allows ACM to be split into a real- time “reactive” component and a non-real time “planning” component that considers temporal parameters and the potential impact of being proactive with mitigating action. The proactive ACM paradigm was developed and evaluated in the context of a generic mono-propellant system model in Simulink/Stateflow with diagnostics, prognostics and an optimal reconfigurable control system. Applications of Artificial Intelligence (AI) technologies in prognostics enhanced ACM system are briefly discussed. Preliminary results from the on-going research work are presented and the paper is concluded with remarks on future work.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration