AndreaBozzo/ceres-open-data-index huggingface dataset:
Predicting Engine Parameters using the Optical Spectrum

The Optical Plume Anomaly Detection (OPAD) system is under development to predict engine anomalies and engine parameters of the Space Shuttle's Main Engine (SSME). The anomaly detection is based on abnormal metal concentrations in the optical spectrum of the rocket plume. Such abnormalities could be indicative of engine corrosion or other malfunctions. Here, we focus on the second task of the OPAD system, namely the prediction of engine parameters such as rated power level (RPL) and mixture ratio (MR). Because of the high dimensionality of the spectrum, we developed a linear algorithm to resolve the optical spectrum of the exhaust plume into a number of separate components, each with a different physical interpretation. These components are used to predict the metal concentrations and engine parameters for online support of ground-level testing of the SSME. Currently, these
predictions are labor intensive and cannot be done online. We predict RPL using neural networks and give preliminary results.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
ERS-1_LEVEL0

ERS-1 Standard Beam Level 0 Frame

Tags: agriculture, biosphere, cryosphere, earth-science, erosion-sedimentation, forest-science, frozen-ground, geomorphic-landforms-processes, glaciers-ice-sheets, land-surface, landscape, oceans, sea-ice, snow-ice, solid-earth, surface-water, tectonics, terrestrial-ecosystems, terrestrial-hydrosphere, topography
Organization: National Aeronautics and Space Administration
HIRENASD Modeshapes Nov 2011 model

This documents the modal results for the final HIRENASD Finite element models TET model with instrumentation, modelcart, balance and OML modified. 

Post your comments below

Frequency comparisons
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/image001_2.png">
<BR>				

Mode shapes showing only the wing for the last column of mode shapes

<TABLE>
<TR><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_1.jpg" width=200> <br>Mode 1
</TD><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_2.jpg" width=200> 
<br>Mode 2</TD><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_3.jpg" width=200> 
<br>Mode 3</TD></TR>
<TR><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_4.jpg" width=200> 
<br>Mode 4</TD><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_5.jpg" width=200> 
<br>Mode 5
</TD><TD><img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_6.jpg" width=200> 
<br>Mode 6
</TD>
</TR>
<TR><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_7.jpg" width=200> 
<br>Mode 7
</TD><TD><img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_8.jpg" width=200> 
<br>Mode 8
</TD><TD><img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_9.jpg" width=200> 
<br>Mode 9
</TD></TR>
<TR><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_10.jpg" width=200> 
<br>Mode 10
</TD><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_11.jpg" width=200> 
<br>Mode 11
</TD><TD>
<img src="https://c3.nasa.gov/dashlink/static/media/dataset/hirenasd_aepw_nov2011_mode_12.jpg" width=200> 
<br>Mode 12
</TD></TR>
</TABLE>

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
An Efficient Local Algorithm for Distributed Multivariate Regression

This paper offers a local distributed algorithm for multivariate regression in large peer-to-peer environments. The algorithm is designed for distributed inferencing, data compaction, data modeling and classification tasks in many emerging peer-to-peer applications for bioinformatics, astronomy, social networking, sensor networks and web mining. Computing a global regression model from data available at the different peer-nodes using a traditional centralized algorithm for regression can be very costly and impractical because of the large number of data sources, the asynchronous nature of the peer-to-peer networks, and dynamic nature of the data/network. This paper proposes a two-step approach to deal with this problem. First, it offers an efficient local distributed algorithm that monitors the “quality ” of the current regression model. If the model is outdated, it uses this algorithm as a feedback mechanism for rebuilding the model. The local nature of the monitoring algorithm guarantees low monitoring cost. Experimental results presented in this paper strongly support the theoretical claims.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Sentinel-3A OLCI Level-2 Regional Earth-observation Full Resolution (EFR) Ocean Color (OC) - Near Realtime Data, version R2022.0

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, ocean-optics, oceans
Organization: National Aeronautics and Space Administration
SBUV/Nimbus-7 Level 2 Daily Ozone Profile and Total Column from CD-ROM V008 (SBUVN7O3) at GES DISC

The version 8 SBUV Nimbus-7 ozone data were first released at the 2004 Quadrennial Ozone Symposium on DVD. The DVD contained all of the SBUV/2 data from NOAA-9, NOAA-11 and NOAA-16 satellites as well as SBUV data from the Nimbus-7 satellite. The DVD is no longer available, however all the data are available on-line from the NASA GES DISC. The Nimbus-7 SBUV v8 data are available from 1978-10-31 to 1990-06-21. The instrument spatial resolution is 180 km x 180 km footprint at nadir. The ozone profiles are made at 21 pressure levels between 1000 and 0.1 hPa. Each data file contains a days worth of ozone measurements, and is written in an ASCII text format.

The SBUV measures incoming solar irradiance and radiance backscattered by the atmosphere at 12 wavelengths in the UV range [0.25-0.34 micrometer] with a spectral band pass of 0.001 micrometer. The wavelength channels used for ozone retrievals for SBUV were: 256, 273, 283, 288, 292, 298, 302, 306, 312, 318, 331, and 340 nm. Radiation at these wavelengths are absorbed by ozone, such that the difference between the incoming and outgoing radiation can be related to the amount of ozone in the atmosphere.

The SBUV consists of a double Ebert-Fastie spectrometer and a filter photometer similar to the BUV on Nimbus 4. The bandwidth of the photometer is about 3 nm and the spectral resolution for SBUV monochromator is 1.1 nm.

Tags: aerosols, atmosphere, atmospheric-chemistry, atmospheric-radiation, earth-science
Organization: National Aeronautics and Space Administration
ν-Anomica: A Fast Support Vector based Novelty Detection Technique

In this paper we propose ν-Anomica, a novel
anomaly detection technique that can be trained on huge data sets with much reduced running time compared to the benchmark one-class Support Vector Machines algorithm.
In ν-Anomica, the idea is to train the machine such that it can provide a close approximation to the exact decision
plane using fewer training points and without losing much of the generalization performance of the classical approach. We have tested the proposed algorithm on a variety of continuous data sets under different conditions. We show that under all test conditions the developed
procedure closely preserves the accuracy of standard oneclass Support Vector Machines while reducing both the training time and the test time by 5 − 20 times.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR V002

The Calibrated Enhanced-Resolution Passive Microwave Daily EASE-Grid 2.0 Brightness Temperature ESDR, Version 2 data set is a multi-sensor Level 3 Earth Science Data Record (ESDR) with improvements upon Version 1 in cross-sensor calibration and quality checking, modern file formats, better quality control, improved projection grids, and local time-of-day (LTOD) processing. These data are gridded to three EASE-Grid 2.0 projections (North Azimuthal, South Azimuthal, and Cylindrical) and include enhanced-resolution imagery, as well as coarse-resolution, averaged imagery. Inputs include brightness temperature data from the Scanning Multichannel Microwave Radiometer (SMMR), Special Sensor Microwave/Imager (SSM/I), Special Sensor Microwave Imager/Sounder (SSMIS), Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E), and Advanced Microwave Scanning Radiometer 2 (AMSR2).

Tags: earth-science, microwave, spectral-engineering
Organization: National Aeronautics and Space Administration
SENTINEL-1A_SINGLE_POL_METADATA_GRD_MEDIUM_RES

Sentinel-1A Single-pol ground projected medium resolution metadata

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
GLAS/ICESat L1A Global Atmosphere Data (HDF5) V033

GLAH02 Level-1A atmospheric data include the normalized relative backscatter for the 532 nm and 1064 nm channels, and low-level instrument corrections such as laser energy (1064 nm and 532 nm), photon coincidence (532 nm), and detector gain correction (1064 nm). Each data granule has an associated browse product.

Tags: earth-science, infrared-wavelengths, spectral-engineering, visible-wavelengths
Organization: National Aeronautics and Space Administration
AIRS/Aqua L2 Near Real Time (NRT) Standard Physical Retrieval (AIRS-only) V006 (AIRS2RET_NRT) at GES DISC

The Atmospheric Infrared Sounder (AIRS) Level 2 Near Real Time (NRT) Standard Physical Retrieval (AIRS-only) product (AIRS2RET_NRT_006) differs from the routine product (AIRS2RET_006) in four ways to meet the three hour latency requirements of the Land Atmosphere NRT Capability Earth Observing System (LANCE): (1) The NRT granules are produced without previous or subsequent granules if those granules are not available within 5 minutes, (2) the predictive ephemeris/attitude data are used rather than the definitive ephemeris/attitude, (3) if the forecast surface pressure is unavailable, a surface climatology is used, and (4) no ice cloud properties retrievals are performed. The consequences of these differences are described in the AIRS Near Real Time (NRT) data products document. The Atmospheric Infrared Sounder (AIRS) is a grating spectrometer (R = 1200) aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination with the Advanced Microwave Sounding Unit (AMSU) and the Humidity Sounder for Brazil (HSB), AIRS constitutes an innovative atmospheric sounding group of visible, infrared, and microwave sensors. This product is produced using AIRS IR only because the radiometric noise in AMSU channel 4 started to increase significantly (since June 2007). The AIRS Standard Retrieval Product consists of retrieved estimates of cloud and surface properties, plus profiles of retrieved temperature, water vapor, ozone, carbon monoxide and methane. Estimates of the errors associated with these quantities is also part of the Standard Product. The temperature profile vertical resolution is 28 levels total between 1100 mb and 0.1 mb, while moisture profile is reported at 14 atmospheric layers between 1100 mb and 50 mb. The horizontal resolution is 50 km. An AIRS granule has been set as 6 minutes of data, 30 footprints cross track by 45 lines along track. There are 240
granules per day, with an orbit repeat cycle of approximately 16 day.

Tags: air-quality, altitude, atmosphere, atmospheric-chemistry, atmospheric-pressure, atmospheric-radiation, atmospheric-temperature, atmospheric-water-vapor, clouds, earth-science, land-surface, ocean-temperature, oceans, surface-radiative-properties, surface-thermal-properties
Organization: National Aeronautics and Space Administration
AfriSAR LVIS L2 Geolocated Surface Elevation Product V001

This data set contains surface elevation data over Gabon, Africa. The measurements were taken by the NASA Land, Vegetation, and Ice Sensor (LVIS), an airborne lidar scanning laser altimeter. The data were collected as part of a NASA campaign, in collaboration with the European Space Agency (ESA) mission AfriSAR.

Tags: earth-science, land-surface, topography
Organization: National Aeronautics and Space Administration
UARS Improved Stratospheric and Mesospheric Sounder (ISAMS) Level 3AT V010 (UARIS3AT) at GES DISC

The Improved Stratospheric and Mesospheric Sounder (ISAMS) Level 3AT data product consists of daily, 65.536 second interval time-ordered vertical profiles of temperature and concentrations of O3, H2O, CH4, CO, N2O, N2O5, NO2, and aerosol absorption coefficients. The insrument measured infrared molecular emmissions in the spectral region from 4.6 to 16.6 microns. ISAMS was flown on NASA's Upper Atmosphere Research Satellite (UARS) and designed to measure the global temperature and composition profiles in the stratosphere and mesosphere. Limb measurements were made in the altitude range between 15 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 ISAMS Level 3AT data were processed with the version 10 algorithm, except H2O which is version 9.

The ISAMS level 3AT product consists of 10 granules per day. A data granule is one ISAMS 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, ...

Each of the 10 ISAMS granules is accompanied by its own additional parameter file, designated as level 3TP. The parameter file, contains the additional ancillary and quality information not found in the 3AT file. 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
Gazetteer of Planetary Nomenclature: Moon: 1:10 million-scale Shaded Relief and Color-coded Topography: South Pole

These lunar maps display the four different areas of the moon with color-coded topography in low and high resolution approved by the International Astronomical Union (IAU).

Tags: far-side, imagery, images, lunar, maps, moon, near-side, north-pole, south-pole, topography, usgs, working-group-for-planetary-system-nomenclature
Organization: National Aeronautics and Space Administration
Prognostics Health Management and Physics based failure Models for Electrolytic Capacitors

This paper proposes first principles based modeling and prognostics approach for electrolytic capacitors. Electrolytic capacitors and MOSFETs are the two major components, which cause degradations and failures in DC-DC converters. This type of capacitors are known for its low reliability and frequent breakdown on critical systems like power supplies of avionics equipment and electrical drivers of electro-mechanical actuators. Some of the more prevalent fault effects, such as a ripple voltage surge at the power supply output can cause glitches in the GPS position and velocity output, and this, in turn, if not corrected will propagate and distort the navigation solution. Prognostics provides a way to assess remaining useful life of a capacitor based on its current state of health and its anticipated future usage and operational conditions. In this paper, we study the effects of accelerated aging due to thermal stress on sets of capacitors. Our focus is on deriving rst principles degradation models for thermal stress conditions. The degradation data form the basis for developing the model based remaining life prediction algorithm. Our overall goal is to derive accurate models of capacitor degradation, and use them to predict performance changes in DC-DC converters.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
IceBridge LVIS L1A Geotagged Images V001

This data set contains geotagged images taken over Greenland and Antarctica by the NASA Digital Mapping Camera paired with the Land, Vegetation, and Ice Sensor (LVIS), an airborne lidar scanning laser altimeter. The data were collected as part of Operation IceBridge funded campaigns.

Tags: earth-science, spectral-engineering, visible-wavelengths
Organization: National Aeronautics and Space Administration
Precursor Parameter Identification for Insulated Gate Bipolar Transistor (IGBT) Prognostics

Precursor parameters have been identified to enable development of a prognostic approach for insulated gate bipolar transistors (IGBT). The IGBT were subjected to thermal overstress tests using a transistor test board until device latch-up. The collector-emitter current, transistor case temperature, transient and steady state gate voltages, and transient and steady state collector-emitter voltages were monitored in-situ during the test. Pre- and post-aging characterization tests were performed on the IGBT. The aged parts were observed to have shifts in capaci- tance-voltage (C-V) measurements as a result of trapped charge in the gate oxide. The collector-emitter ON voltage V_CE(ON) showed a reduction with aging. The reduction in the V_CE(ON) was found to be correlated to die attach degradation, as observed by scan- ning acoustic microscopy (SAM) analysis. The collector-emitter voltage, and transistor turn-off time were observed to be precursor parameters to latch-up. The monitoring of these precursor parameters will enable the development of a prognostic methodology for IGBT failure. The prognostic methodology will involve trending precursor data, and using physics of failure models for prediction of the remaining useful life of these devices.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
NASA 3D Models: Aqua

Aqua, Latin for water, is a NASA Earth Science satellite mission named for the large amount of information that the mission is collecting about the Earth's water cycle, including evaporation from the oceans, water vapor in the atmosphere, clouds, precipitation, soil moisture, sea ice, land ice, and snow cover on the land and ice. Additional variables also being measured by Aqua include radiative energy fluxes, aerosols, vegetation cover on the land, phytoplankton and dissolved organic matter in the oceans, and air, land, and water temperatures.

Tags: 3d-model, aqua, satellite, spacecraft
Organization: National Aeronautics and Space Administration
GPM GROUND VALIDATION NOAA S-BAND PROFILER ORIGINAL DWELL DATA MC3E V1

The GPM Ground Validation NOAA S-Band Profiler Original Dwell Data MC3E dataset was gathered during the Midlatitude Continental Convective Clouds Experiment (MC3E) in Oklahoma from April 16, 2011 to June 7, 2011. The overarching goal was to provide the most complete characterization of convective cloud systems, precipitation, and the environment that has ever been obtained, providing constraints for model cumulus parameterizations and space-based rainfall retrieval algorithms over land that had never before been available. The S-band profiler operated at 2.8 GHz, pointed vertically, and measured the backscattered power from raindrops and ice particles as precipitating cloud systems passed overhead. The S-band operated in two modes: precipitation mode and attenuated mode. The precipitation mode was the normal or full-power mode, and the attenuated mode was the low-power mode. The profiler alternated between modes collecting either 7 or 9 consecutive precipitation mode profiles separated by 1 attenuated mode profile. Both modes processed radar pulses collected during a 7-second dwell before calculating the Doppler velocity spectra at each radar range gate that were separated by 60-meters in the vertical. The attenuated and precipitation mode data are available in moment, pop spectra (uncalibrated raw spectra) and calibrated spectra hourly files. The S-band spectra were calibrated against the surface disdrometer to determine a radar calibration constant. Calibrated spectra were constructed for each profile and are expressed as reflectivity spectral density. After calibration, the instrument provides a reflectivity estimate through the precipitation. Data is in hourly files in the netCDF format.

Tags: earth-science, radar, spectral-engineering
Organization: National Aeronautics and Space Administration
HRIR/Nimbus-1 Level 1 Meteorological Radiation Data V001 (HRIRN1L1) at GES DISC

HRIRN1L1 is the High Resolution Infrared Radiometer (HRIR) Nimbus-1 Level 1 Meteorological Radiance Data (NMRT) product and contains infrared radiances converted to equivalent black-body temperature or "brightness" temperature values. he data, originally written on IBM 360 machines, were recovered from magnetic tapes, also referred to as Nimbus Meteorological Radiation Tapes (NMRT). The data are archived in their original IBM 36-bit word proprietary format, also referred to as a binary TAP file.

The HRIR instrument was designed to perform two major functions: first to map the Earth's cloud cover at night to complement the television coverage during the daytime portion of the orbit, and second to measure the temperature of cloud tops and terrain features. The HRIR instrument was launched on the Nimbus-1 satellite and was operational from August 28, 1964 through September 22, 1964 when the spacecraft malfunctioned.

Measurements taken during daytime do not reveal true surface temperaturessince the radiometer operates in the 3.5 to 4.1 micron region, and reflectedsolar radiation is added to emitted surface radiation. However, reflected sunlight in this spectral region does not saturate the radiometer output and usable pictures can be made.

This product was previously available from the NSSDC with the identifier ESAD-00209 (old ID 64-052A-03A).

Tags: earth-science, infrared-wavelengths, spectral-engineering
Organization: National Aeronautics and Space Administration
CryoSat-2 Level-4 Sea Ice Elevation, Freeboard, and Thickness V001

This data set contains estimates of Arctic sea ice thickness and concentration, ice freeboard and surface roughness, as well as snow density and depth, derived from the ESA CryoSat-2 Synthetic Aperture Interferometric Radar Altimeter (SIRAL). The data are provided daily on a 25 km grid as 30-day averages for the months between September and May.

Tags: cryosphere, earth-science, sea-ice, snow-ice
Organization: National Aeronautics and Space Administration
GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar IPHEx V1

The GPM Ground Validation NASA S-Band Dual Polarimetric (NPOL) Doppler Radar IPHEx dataset was collected during the GPM Ground Validation Integrated Precipitation and Hydrology Experiment (IPHEx) field campaign conducted in South Carolina from April 27, 2014 through June 16, 2014. The NPOL Doppler Radar scanned in high-resolution Plan Position Indicator (PPI), Range-Height Indicator (RHI), and PPI Sector (PPS) scan modes and provided measurements of precipitation in liquid, mixed, and ice phases. Data files are available in tarred universal format (UF) files, and browse images are available in compressed PNG files.

Tags: earth-science, radar, spectral-engineering
Organization: National Aeronautics and Space Administration