AndreaBozzo/ceres-open-data-index huggingface dataset:
GPM DPR Ka Environment L2A 1.5 hours 5 km V07 (GPM_2AKaENV) at GES DISC

Version 07 is the current version of the data set. Older versions will no longer be available and have been superseded by Version 07.
.

This is environmental data that includes the profiles of atmospheric parameters assumed in the L2 retrieval algorithm.

The 2AKa algorithm provides precipitation estimates from the Ka radar of the Dual-Frequency Precipitation Radar on the core GPM spacecraft. The product contains two swaths of data corresponding to the scans of the Ka radar. 

The first swath contains matched scans (MS), which are intended to be co-aligned with the Ku-band instantaneous fields of view (IFOV). The second swath contains the high-sensitivity scans (HS), which are interleaved between the Ku/Ka-MS swaths. Both swaths are narrow and centered within the interior of the Ku swath. 

This is a single-frequency retrieval of precipitation; no information from the Ku radar is used. The retrievals are performed at each radar range bin along the slant path of the radar IFOV for each swath. This is a single-frequency retrieval that relies on Ka-band data only. While the 2ADPR dual-frequency retrieval should give better overall estimates, that algorithm requires co-aligned Ku-band data. This 2AKa product will be produced independently and would not be impacted by any operational issues with the Ku-band radar. The high sensitivity to smaller hydrometeors should result in precipitation estimates in lighter precipitation than the Ku-only data.

Tags: atmosphere, atmospheric-water-vapor, earth-science, precipitation
Organization: National Aeronautics and Space Administration
OCO-3 Level 2 CO2 prior based on CO2 monthly flask record, global meteorology, and age of air, Forward Processing V11 (OCO3_L2_CO2Prior) 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 Older versions will no longer be available and are superseded by Version 11.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 -3 (OCO-3) was deployed to the International Space Station in May, 2019. It is technically a single instrument, almost identical to OCO-2.

The Orbiting Carbon Observatory is the first NASA mission designed to collect space-based measurements of atmospheric carbon dioxide with the precision, resolution, and coverage needed to characterize the processes controlling its buildup in the atmosphere.

OCO-3 incorporates three high-resolution spectrometers that make coincident measurements of reflected sunlight in the near-infrared CO2 near 1.61 and 2.06 micrometers and in molecular oxygen (O2) A-Band at 0.76 micrometers. The three spectrometers have different characteristics and are calibrated independently. 

Oxygen-A Band cloud screening algorithm is one of the primary cloud screening tools implemented in the operational OCO processing pipeline. The algorithm was introduced and applied to early GOSAT data  with further analysis performed on OCO-2 simulations.

The OCO ABO2 algorithm employs a fast Bayesian retrieval to estimate surface pressure and surface albedo from high resolution spectra of the molecular oxygen (O2) A-band, near 0.765 µm. The radiative transfer forward model (FM) assumes a clear-sky condition, i.e. Rayleigh scattering only, such that differences between the modeled and measured radiances are apparent when the measurement scene contains cloud or aerosol.

Tags: atmosphere, atmospheric-chemistry, earth-science
Organization: National Aeronautics and Space Administration
UARS Halogen Occultation Experiment (HALOE) Level 2 V019 (UARHA2FN) at GES DISC

The Halogen Occultation Experiment (HALOE) Level 2 data product consists of daily vertical profiles of temperature, aerosol extinciton and pressure, as well as concentrations of HCl, HF, CH4, NO by gas filter correlation radiometry and H2O, NO2, O3 and CO2 by broadband filter radiometry. The instrument measured atmospheric infrared absorption at wavelengths from 2.43 to 10.25 microns. HALOE was flown on NASA's Upper Atmosphere Research Satellite (UARS) to investigate upper atmosphere chemistry, dynamics and radiative processes, particlarly stratospheric ozone destruction and chlorofluromethane impact on ozone. HALOE is a solar occultation experiment which typically views 15 sunrise and sunset events each day. Limb measurements were made in the altitude range between 3 km and 130 km (depending on channel) with less than 1 km resolution. For a given day, the profiles were in two distinct latitude bands, for the sunset and sunrise events. Coverage across the full range of latitudes between 80S and 80N was achieved on a time period ranging from about two to six weeks, depending on the time of year. The HALOE Level 2 data were processed with the version 19 algorithm.

The HALOE level 2 product consists of a single granule or file per day. A data granule contains all measured HALOE species and subtypes, and ancillary information. Aerosol extinction coefficients are measured in units of 1/km, chemical species are given in mixing ratios, and temperature is in units of degrees Kelvin. HALOE level 2 data are on 491 instrument resolution altitude levels. The data files are available in a binary record oriented format.

Tags: aerosols, atmosphere, atmospheric-chemistry, atmospheric-temperature, atmospheric-water-vapor, earth-science
Organization: National Aeronautics and Space Administration
NASA 3D Models: QuikSCAT

NASA's Quick Scatterometer (QuikSCAT) is equipped with a specialized microwave radar that measures near-surface wind speed and direction under all weather and cloud conditions over Earth's oceans.

Tags: 3d-model, eos, eyes-on-the-earth-3d, eyes-on-the-solar-system, quikscat, satellite, seawinds, spacecraft
Organization: National Aeronautics and Space Administration
RSW Fully Tet Cell-Centered Fine Mesh

This is the RSW dataset for a fine fully tetrahedral grid designed for a cell-centered unstructured solver.

UG3      : Grid File Name    = rsw_fine_tetcc.b8.ugrid
UG3      : Quad Surface Faces=         0
UG3      : Tria Surface Faces=    297278
UG3      : Nodes             =  12009356
UG3      : Total Elements    =  71561254
UG3      : Hex Elements      =         0
UG3      : Pent_5 Elements   =         0
UG3      : Pent_6 Elements   =         0
UG3      : Tet Elements      =  71561254
UG3      : BL Tet Elements   =  66001229

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Proactive Management of Aviation System Safety Risk

Aviation safety systems have undergone dramatic changes over the past fifty years.  If you take a look at the early technology in this area, you'll see that there was a lot of work done in the area of so-called 'built-in-testing' (BIT) which essentially tests connectivity between different components.

 

Technology has moved forward very far since that time.  With the massive storage systems and advanced sensors and other communications systems, we are now able to capture and store vast quantities of health and control related data.  This data is usually stored off-line for future analysis.  In many cases, we also have an abundance of human-written text reports that relate to known safety issues.  A key problem is to 'look' across all these data sources in order to find precursors to safety events.  Although humans do look at many aspects of the data, it is difficult, if not impossible for them to integrate all the information available in a meaningful way. 

 


Other industries face this glut of data in their own way.  Businesses have invested heavily in business intelligence products based on data mining that are designed to convert data into actionable information to maximize their profits or other metrics.  The IVHM project is investing in data mining technologies to help sift through these massive data sets to uncover actionable information from a safety perspective.  I've attached a presentation that Irv Statler and I gave at NASA HQ on this subject during an Aeronautics Technical Seminar. A video of the talk is also included.  It's about 90 minutes long, so grab some popcorn.  :)

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
CDAWeb data browsing system at the Space Physics Data Facility (SPDF)

The Space Physics Data Facility (SPDF) is the archive of non-solar data for the Heliospheric Science Division (HSD) at NASA's Goddard Space Flight Center. The Coordinated Data Analysis (CDAWeb) provides data browsing and listings for the SPDF archived data in CDF and netCDF scientific data formats. This web service covers most recent space physics missions (including ACE, Cluster, C/NOFS, FAST, Geotail, GOES 5-12, IMAGE, LANL 1989-2002, NOAA 10-14, OMNI, Polar, STEREO, THEMIS, TIMED, Ulysses, Van Allen Probes, Voyager, Wind and others) and older missions (including Alouette, CRRES, DE, Hawkeye, IMP-8, ISIS, NOAA 5-10, OMNI and others).

Tags: astrophysics, heliophysics, space-missions, space-physics, space-science
Organization: National Aeronautics and Space Administration
Accelerated Aging Experiments for Capacitor Health Monitoring and Prognostics

This paper discusses experimental setups for health monitoring and prognostics of electrolytic capacitors under nominal operation and accelerated aging conditions. Electrolytic capacitors have higher failure rates than other components in electronic systems like power drives, power converters etc. Our current work focuses on developing first-principles-based degradation models for electrolytic capacitors under varying electrical and thermal stress conditions. Prognostics and health management for electronic systems aims to predict the onset of faults, study causes for system degradation, and accurately compute remaining useful life. Accelerated life test methods are often used in prognostics research as a way to model multiple causes and assess the effects of the degradation process through time. It also allows for the identification and study of different failure mechanisms and their relationships under different operating conditions. Experiments are designed for aging of the capacitors such that the degradation pattern induced by the aging can be monitored and analyzed. Experimental setups and data collection methods are presented to demonstrate this approach.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
SAMS/Nimbus-7 Level 1 Radiance Data from CD-ROM V001 (SAMSN7L1RAD_CDROM) at GES DISC

SAMSN7L1RAD_CDROM is the gridded Nimbus-7 Stratospheric and Mesospheric Sounder (SAMS) Level 1 Radiance Data Product. The radiances were selected to derive gas concentrations at the wavelength bands 15 (CO2), 25-100 (H2O) 4-5 (CO and NO), and 7.7 (N2O and CH4) microns in the stratosphere and mesosphere, with a resolution of 100 km in the horizontal by 10 km in the vertical at the limb. This product contains radiances in a daily 2.5 degree latitude x 10 degree longitude grid format, gridded temperature profiles at 100, 30, 10, 3, 1, 0.3, 0.1, 0.03, 0.01 and 0.003 hPa, as well as the calibration, apriori and reformatted copies of the original tapes. The data for this product are available from 22 October 1978 through June 9 1983, with a few additional raw radiances to 16 April 1984. The principal investigators for the SAMS experiment were Prof. John T. Houghton and Dr. Fredric W. Taylor from Oxford University.

This product was created by the Oxford University's Atmospheric, Oceanic and Planetary Physics (AOPP) group. The data are stored on a set of 53 CD-ROMs in ASCII files of hexadecimal characters, and are available in gzipped Unix tar archive files. The first CD-ROM contains the a-priori temperature profile, monthly mean retrieved temperature profile, pre-launch calibration, housekeeping and instrument subsystem status files. CD-ROMs 2-5 contain the gridded temperature data. CD-ROMs 6-22 contain the radiances from the C-series and G-series tapes, and CD-ROMs 34-53 contain the raw radiance values from the R-series tape. The byte-ordering in the data files follows the DEC convention for 16-bit integers of less significant byte first. Normal 2's complement integer storage is assumed.

Tags: atmosphere, atmospheric-temperature, earth-science, infrared-wavelengths, spectral-engineering
Organization: National Aeronautics and Space Administration
Smart Coatings for Launch Site Corrosion Protection Project

&lt;p&gt;Corrosion is a serious problem that has enormous costs for the nation (4.2&#37; GDP in 2007) and worldwide. Kennedy Space Center is located in one of the most naturally corrosive areas in the world. Acidic exhaust from the solid rocket boosters aggravates these natural conditions. New space vehicles are likely to use the same solid rocket fuel used to launch the Space Shuttle. Launching facilities and ground support equipment will continue to need corrosion protection.&lt;/p&gt;&lt;p&gt;Current research is focused on&amp;nbsp;encapsulating environmentally friendly&amp;nbsp;corrosion inhibitors and incorporating them&amp;nbsp;into commercially available coatings to test&amp;nbsp;their effectiveness. Accelerated corrosion&amp;nbsp;tests have shown that corrosion-activated release&amp;nbsp;microcapsules and particles can&amp;nbsp;be used as inhibitor delivery systems to&amp;nbsp;improve the corrosion protection of several&amp;nbsp;commercially available coatings. This work is&amp;nbsp;being conducted in collaboration with several&amp;nbsp;industry partners who are interested in the&amp;nbsp;NASA-developed smart coating technology.&lt;/p&gt;

Tags: active, kennedy-space-center, project
Organization: National Aeronautics and Space Administration
SatCORPS CERES GEO Edition 4 Meteosat-09 Southern Hemisphere Version 1

CER_GEO_Ed4_MET09_SH_V01.2 is the Satellite ClOud and Radiation Property retrieval System (SatCORPS) Clouds and the Earth's Radiant Energy System (CERES) Geostationary Satellite (GEO) Edition 4 Meteosat-9 over the Southern Hemisphere (SH) Version 1.2 data product. Data was collected using the Spinning Enhanced Visible and Infrared Imager (SEVIRI) Instrument on the Meteosat-9 platform. Data collection for this product is in progress.

Note : Version 1.2 is identical to version 1.0 . No changes in retrieval algorithm.

This data set is comprised of cloud micro-physical and radiation properties derived hourly from Meteosat-9 geostationary satellite imager data using the Langley Research Center (LARC) SATCORPS algorithms in support of the Clouds and the Earth's Radiant Energy System (CERES) project. The cloud micro-physical and radiation properties from each active geostationary satellite are merged together to create hourly global cloud properties that are used to estimate fluxes between CERES instrument measurements to account for the changing diurnal cycle. The data set is arranged as files for each hour and in netCDF-4 format. The observations are at 3-km resolution (at nadir) and are sub-sampled to 6 km.

CERES is a key component of the Earth Observing System (EOS) program. The CERES instruments provide radiometric measurements of the Earth's atmosphere from three broadband channels. The CERES missions are a follow-on to the successful Earth Radiation Budget Experiment (ERBE) mission. The first CERES instrument, protoflight model (PFM), was launched on November 27, 1997 as part of the Tropical Rainfall Measuring Mission (TRMM). Two CERES instruments (FM1 and FM2) were launched into polar orbit on board the Earth Observing System (EOS) flagship Terra on December 18, 1999. Two additional CERES instruments (FM3 and FM4) were launched on board Earth Observing System (EOS) Aqua on May 4, 2002. The CERES FM5 instrument was launched on board the Suomi National Polar-orbiting Partnership (NPP) satellite on October 28, 2011. The newest CERES instrument (FM6) was launched on board the Joint Polar-Orbiting Satellite System 1 (JPSS-1) satellite, now called NOAA-20, on November 18, 2017.

Tags: atmosphere, clouds, earth-science
Organization: National Aeronautics and Space Administration
SENTINEL-1B_METADATA_OCN

Sentinel-1B Metadata for OCN product

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-waves-swells, ocean-waves-wave-fetch, ocean-waves-wave-spectra, ocean-waves-wind-waves, ocean-winds, ocean-winds-surface-winds, ocean-winds-turbulence, ocean-winds-wind-shear, oceans, sea-ice, snow-ice, solid-earth, surface-water, tectonics, terrestrial-ecosystems, terrestrial-hydrosphere, topography
Organization: National Aeronautics and Space Administration
GPM GROUND VALIDATION PAWNEE RADAR MC3E V1

The GPM Ground Validation Pawnee Radar MC3E dataset was collected by the Pawnee radar data for the Midlatitude Continental Convective Clouds Experiment (MC3E) held in Oklahoma were collected on May 24, 2011 to support the CHILL radar and the NASA ER-2 instrumentation data. The Pawnee is a single polarization (V polarization) Doppler radar. During the ER2 flight, the Pawnee conducted a wide azimuth opening PPI sector volume scan oriented towards the east designed to provide general 3D coverage of the ER2 flight area. When the ER2 reported starting a course reversal, the CHILL and Pawnee radars attempted to start sector scans at the same time to support dual Doppler wind analyses. In an effort to expand the MC3E sampling to a wider geographical area, the NASA ER2 aircraft was directed to Northeastern Colorado while widespread rain was in progress on May 24, 2011. The aircraft flew a series of pre-defined ground tracks that coincided with radials from the CHILL radar. This aided in keeping the aircraft in the plane of a series of RHI scans done by CHILL. The single polarization Pawnee radar maintained volume coverage of the echo system while the radial flight legs were in progress. During aircraft course reversals at the ends of the radial legs, the CHILL and Pawnee radars started volume scans in synchronization to support dual Doppler wind syntheses. CHILL and Pawnee radar data are available as separate datasets.

Tags: earth-science, radar, spectral-engineering
Organization: National Aeronautics and Space Administration
Classifying Things That Go Bang in the Night

The automated, real-time classification of variable
and transient events in terms of their astrophysical
nature is quickly becoming a necessity for the new synoptic sky surveys.

This generally has to be done using sparse
and heterogeneous measurements for
individual events, both from the survey
pipelines and existing archives.
The data we used in our tests are both from
archival observations, as well as from our
own follow-up of recent transients from
the PQ and CRTS surveys.

 

See file for more information.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
ACES Aircraft and Mechanical Data V1

The ACES Aircraft and Mechanical Data consist of aircraft (e.g. pitch, roll, yaw) and mechanical (e.g. aircraft engine speed, tail commands, fuel levels) data recorded by the Altus II Unmanned Aerial Vehicle (Altus II UAV) system during the Altus Cumulus Electrification Study (ACES) based at the Naval Air Facility Key West in Florida. ACES aimed to provide extensive observations of the cloud electrification process and its effects by using the Altus II UAV to collect cloud top observations of thunderstorms. The campaign also worked to validate satellite lightning measurements. The Altus II aircraft and mechanical data files are available from July 10 through August 30, 2002 in MATLAB data format (.mat).

Tags: earth-science, platform-characteristics, spectral-engineering
Organization: National Aeronautics and Space Administration
Model-based Prognostics under Limited Sensing

Prognostics is crucial to providing reliable condition-based maintenance decisions. To obtain accurate predictions of component life, a variety of sensors are often needed. However, it is typically difficult to add enough sensors for reliable prognosis, due to system constraints such as cost and weight. Model-based prognostics helps to offset this problem by exploiting domain knowledge about the system, its components, and how they fail by casting the underlying physical phenomena in a physics-based model that is derived from first principles. We develop a model-based prognostics methodology using particle filters, and investigate the benefits of a model-based approach when sensor sets are diminished. We apply our approach to a detailed physics- based model of a pneumatic valve, and perform comprehensive simulation experiments to demonstrate the robustness of model-based approaches under limited sensing scenarios using prognostics performance metrics.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
UARS Cryogenic Limb Array Etalon Spectrometer (CLAES) Level 3AL V009 (UARCL3AL) at GES DISC

The Cryogenic Limb Array Etalon Spectrometer (CLAES) Level 3AL data product consists of daily, 4 degree increment latitude-ordered vertical profiles of temperature and concentrations of O3, H2O, CH4, N2O, NO, NO2, N2O5, HNO3, ClONO2, HCl, CF2Cl2 (CFC-12), CFCl3 (CFC-11), and aerosol absorption coefficients. The instrument measured infrared thermal emissions at wavelengths from 3.5 to 12.7 microns. CLAES was flown on NASA's Upper Atmosphere Research Satellite (UARS) and designed to measure the chemical composition of the stratosphere and mesosphere, and also investigated the depletion of stratospheric ozone and ozone chemistry. Limb measurements were made in the altitude range between 10 and 60 km at about 2.5 km resolution. Data were collected between latitude 34S and 80N and 80S and 34N, alternating each satellite yaw cycle of about 36 days. The CLAES Level 3AL data were processed with the version 9 algorithm, except H2O which is version 7.

The CLAES level 3AL product consists of 20 granules per day. A data granule is one CLAES species or subtype per day. Data are on the UARS standard pressure levels (in mbars) given by:

P(i) = 1000 * 10**(-i/6)  for i = 0, 1, 2, ...

The data files are available in a binary record oriented format.

Tags: aerosols, atmosphere, atmospheric-chemistry, atmospheric-temperature, atmospheric-water-vapor, earth-science
Organization: National Aeronautics and Space Administration
CDDIS_DORIS_data_cycle

The Doppler Orbitography by Radiopositioning Integrated on Satellite (DORIS) was developed by the Centre National d'Etudes Spatiales (CNES) with cooperation from other French government agencies. The system was developed to provide precise orbit determination and high accuracy location of ground beacons for point positioning. DORIS is a dual-frequency Doppler system that has been included as an experiment on various space missions such as TOPEX/Poseidon, SPOT-2, -3, -4, and -5, Envisat, and Jason satellites. Unlike many other navigation systems, DORIS is based on an uplink device. The receivers are on board the satellite with the transmitters are on the ground. This creates a centralized system in which the complete set of observations is downloaded by the satellite to the ground center, from where they are distributed after editing and processing. An accurate measurment is made of the Doppler shift on radiofrequency signals emitted by the ground beacons and received on the spacecraft.

Tags: nasa
Organization: National Aeronautics and Space Administration
VIIRS/JPSS1 Snow Cover Daily L3 Global 375m SIN Grid V002

This data set contains daily snow cover derived from radiance data acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) on board the Joint Polar Satellite System's first satellite (JPSS-1). The data is a gridded composite, generated from 6 minute swaths, and projected to a 375 m Sinusoidal grid. Snow cover is identified using the Normalized Difference Snow Index (NDSI) and a series of screens designed to alleviate errors and flag uncertain snow cover detections.

Tags: cryosphere, earth-science, snow-ice
Organization: National Aeronautics and Space Administration