AndreaBozzo/ceres-open-data-index huggingface dataset:
TRMM Microwave Imager Oceanic Rainfall L3 1 month 5 degree x 5 degree V7 (TRMM_3A11) at GES DISC

The new equivalent for this dataset should be searched for as "GPM_3GPROFTRMMTMI_CLIM".

The TMI Gridded Oceanic Rainfall Product, also known as TMI Emission, consists of 5 degree by 5 degree monthly oceanic rainfall maps using TMI Level 1 data as input. Statistics of the monthly rainfall, including number of samples, standard deviation, goodness-of-fit (of the brightness temperature histogram to the lognormal rainfall distribution function) and rainfall probability are also included in the output for each grid box.

TMI brightness temperature histograms at 1 degree intervals are generated based on the 19, 21 and 19-21 GHz combination channels obtained from the Level 1B (calibrated brightness temperature) TMI product. Monthly rainfall indices over the ocean are derived by statistically matching monthly histograms of brightness temperatures with model calculated rainfall Probability Distribution Functions (PDF) using the 19-21 GHz combination data. Retrieved monthly rainfall data must pass a quality test based on the quality of the PDF fit.

Tags: atmosphere, clouds, earth-science, microwave, precipitation, spectral-engineering
Organization: National Aeronautics and Space Administration
Health-Management Driven Control Reconfiguration Approach for Flight Vehicles

A prognostic system makes it possible to anticipate loss of functionality before it occurs with sufficient lead time to take actions that mitigate the impact of this loss. We focus on the forms of mitigation within the flight vehicle that influence the operational dynamics but do not directly amend the mission plan. Thus, we focus upon the reconfiguration of the feedback control strategy for the flight system.

The high degree of complexity in the design and dynamics of modern aircraft is typically handled using a hierarchical control scheme in which there are several levels of control at increasing levels of responsibility: the component level, the subsystem level, and the system level. Our reconfiguration strategy involves mitigating problems that are detected at the component level at both the level in which the fault is detected and higher levels as well. There are, thus, two subproblems to the reconfiguration: (a) an adaptive control problem at the lower level to extend component life and derive new component performance limits, and (b) a supervisory control problem at the higher level to adapt the system controller to maximize system capability while respecting the performance limitations. Since our reconfiguration occurs in the context of a dynamic system, we need to respect the stability implications of the reconfiguration. To address this, we apply bandwidth analyses at the component level and the systems level in a robust performance context. A conservative criterion for stability is to impose rate limits for reconfiguration that insure that undesired, and possibly unmodeled, modes of behavior are not driven by reconfiguration activities. For specific hardware, extensions beyond this conservative approach may be warranted (e.g. to catch faulty behavior) and validated on a case-by-case basis, essentially by extending the component modeling to include a model of behavior under certain types of reconfiguration.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
Walton-Smith CTD, WS19322, WS19322_StnV3, 2019-11-21, 27.0262N 82.627W

Walton-Smith Conductivity, Temperature, Depth (CTD) - WS19322 - WS19322_StnV3 - 2019-11-21 - 27.0262N 82.627W. Hydrographic Measurements in the Gulf of Mexico. flags: 1 = good; 3 =  mean ÃÂ± 3*standard deviation; 4 = mean ÃÂ± 5*standard deviation; 9 = missing. other

Tags: 2019-11-21, 27.0262n, 82.627w, 911plus, acoustic, acoustic velocity, acoustics, active, altimeter, altimeter status_flag, atlantic, attenuation/transmission, available, cdom, cdom status_flag, chemistry, chlorophyll, chlorophyll_a_fluorescense_in_sea_water, chlorophyll_a_fluorescense_in_sea_water status_flag, color, colored, concentration, conductivity, coordinate, crs, ctd, currents, data, density, depth, descent, descent_rate status_flag, dissolved, dissolved o2, dissolved_oxygen status_flag, division, downwelling, earth, earth science, ecosystems, elapsed, electrical, flag, fluorescence, fluorescense, fluorometer, fractional, fractional_saturation_of_oxygen_in_sea_water, fractional_saturation_of_oxygen_in_sea_water status_flag, gom, good, grid, gulf, horizontal, identifier, instrument, instrument1, instrument10, instrument11, instrument12, instrument2, instrument3, instrument4, instrument5, instrument6, instrument8, instrument9, irradiance, laboratory, laboratory/ocean, labs, latitude, longitude, mapping, marine biodiversity observation network, matter, meteorological, mexico, noaa, o2, ocean, ocean acoustics, ocean chemistry, ocean color, ocean optics, ocean pressure, ocean temperature, oceanographic, oceans, optical, optical properties, optics, organic, other, oxygen, par, par/irradiance, photon, photosynthetic, photosynthetically, photosynthetically active radiation, photosynthetically_available_radiation, photosynthetically_available_radiation status_flag, platform, practical, pressure, profile, properties, quality, quality_flag, radiance, radiation, rate, reference, salinity, salinity/density, saturarion, saturation, sbe, science, sea, sea_water_electrical_conductivity, sea_water_electrical_conductivity status_flag, sea_water_practical_salinity, sea_water_pressure, sea_water_pressure status_flag, sea_water_salinity status_flag, sea_water_sigma_t, sea_water_sigma_t status_flag, sea_water_temperature, sea_water_temperature status_flag, seabird, seapoint, seawater, second, sensor, sigma, smith, sonde, sound, spar, spatial, speed, speed_of_sound_in_sea_water, speed_of_sound_in_sea_water status_flag, spherical, status, stnv3, stnv3.cnv, surface, surface_downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water, surface_photosynthetically_available_radiation status_flag, system, temperature, time, variable, velocity, walton, walton-smith, water, water pressure, water temperature, weatherbird, wet, ws19322
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Improving Computational Efficiency of Prediction in Model-based Prognostics Using the Unscented Transform

Model-based prognostics captures system knowledge in the form of physics-based models of components, and how they fail, in order to obtain accurate predictions of end of life (EOL). EOL is predicted based on the esti- mated current state distribution of a component and ex- pected profiles of future usage. In general, this requires simulations of the component using the underlying mod- els. In this paper, we develop a simulation-based pre- diction methodology that achieves computational effi- ciency by performing only the minimal number of sim- ulations needed in order to accurately approximate the mean and variance of the complete EOL distribution. This is performed through the use of the unscented trans- form, which predicts the means and covariances of a distribution passed through a nonlinear transformation. In this case, the EOL simulation acts as that nonlinear transformation. In this paper, we review the unscented transform, and describe how this concept is applied to efficient EOL prediction. As a case study, we develop a physics-based model of a solenoid valve, and perform simulation experiments to demonstrate improved com- putational efficiency without sacrificing prediction accu- racy.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
ATLAS/ICESat-2 L2A Normalized Relative Backscatter Profiles V006

ATL04 contains along-track normalized relative backscatter profiles of the atmosphere. The product includes full 532 nm (14 km) uncalibrated attenuated backscatter profiles at 25 times per second for vertical bins of approximately 30 meters. Calibration coefficient values derived from data within the polar regions are also included. The data were acquired by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) observatory.

Tags: earth-science, lidar, spectral-engineering
Organization: National Aeronautics and Space Administration
New Detector Development for X-ray Astronomy Project

"We propose to continue our detector development program in X-ray astronomy. Under our current grant we are developing a new

type of active pixel detector. The current funding allows us to carry this design through CDR, but will not cover fabrication of the detectors. Here we propose to build and test these innovative detectors, which could potentially be employed in future missions such as IXO, Xenia, Gen-X, and SMEX/MIDEX-class missions. This proposal supports NASA's goals of technical advancement of technologies suitable for future missions and training of graduate students."

Tags: active, project
Organization: National Aeronautics and Space Administration
Gazetteer of Planetary Nomenclature: Saturnian System: Phoebe

These images display several of Saturn's moons approved by the International Astronomical Union (IAU).

Tags: dione, enceladus, epimetheus, hyperion, iapetus, imagery, images, janus, mimas, moons, phoebe, rhea, saturn, tethys, titan, usgs, working-group-for-planetary-system-nomenclature
Organization: National Aeronautics and Space Administration
Precipitation Measurement Missions Data Access

Tropical Rainfall Measuring Mission (TRMM) data products are currently available from 1998 to the present. Global Precipitation Measurement (GPM) mission data products are currently available from March 2014 to the present. TRMM and GPM are joint missions between NASA and the Japan Aerospace Exploration Agency (JAXA) designed to monitor and study global precipitation. Here we outline the types of products currently available for TRMM and GPM and the various ways to query, view and download these precipitation products.

Tags: climate, earth-science, gpm, ice, nasa, precipitation, radiance, rain, snow, trmm, water, water-cycle
Organization: National Aeronautics and Space Administration
Sentinel-3A OLCI Level-3M Global Mapped Earth-observation Reduced Resolution (ERR) Remote-Sensing Reflectance (RRS) - Near Real-time (NRT) 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: atmosphere, atmospheric-radiation, earth-science, ocean-optics, oceans
Organization: National Aeronautics and Space Administration
Landsat 8

The Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS) are onboard the Landsat 8 satellite, have acquired images of the Earth since  February 2013. The sensors collect images of the Earth with a 16-day repeat cycle, referenced to the Worldwide Reference System-2. The approximate scene size is 170 km north-south by 183 km east-west (106 mi by 114 mi).

Landsat 8 image data files consist of 11 spectral bands with a spatial resolution of 30 meters for bands 1-7 and bands 9-11; 15-meters for the panchromatic band 8. Delivered Landsat 8 Level-1 data typically include both OLI and TIRS data files; however, there may be OLI-only and/or TIRS-only scenes in the USGS archive.  A Quality Assurance (QA.tif) band is also included. This file provides bit information regarding conditions that may affect the accuracy and usability of a given pixel – clouds, water or snow, for example.

Tags: earth-science, geomorphic-landforms-processes, infrared-wavelengths, land-surface, land-use-land-cover, landscape, sensor-characteristics, spectral-engineering, surface-radiative-properties, visible-wavelengths
Organization: National Aeronautics and Space Administration
THIR/Nimbus-4 Level 1 Meteorological Radiation Data at 6.7 microns V001 (THIRN4L1CH67) at GES DISC

THIRN4L1CH67 is the Nimbus-4 Temperature-Humidity Infrared Radiometer (THIR) Level 1 Meteorological Radiation Data at 6.7 microns product contains radiances expressed in units of equivalent brightness temperature measured in the 6.7 micron channel. The data, originally written on IBM 360 machines, were recovered from magnetic tapes, also referred to as Nimbus Meteorological Radiation Tapes (NMRT-THIR). The data are archived in their original IBM 36-bit word proprietary format, also referred to as a binary TAP file.

The Nimbus-4 satellite was successfully launched on April 8, 1970. The THIR experiment on Nimbus-4 replaced the measurements made the HRIR and MRIR instruments flown on previous Nimbus satellites. The THIR instrument is a two channel high resolution scanning radiometer designed to perform two major functions:* The 11.5 micron channel provides both day and night cloud top or surface temperatures. The ground resolution at the sub-point is 8 km and operates day and night.* The 6.7 micron channel gives information on the moisture content of the upper troposphere and stratosphere and the location of jet streams and frontal systems. The water vapor channel has a resolution of the sub-point is 22 km and operates mostly at night.

The THIR Principal Investigator was Andrew W. McCulloch from NASA Goddard Space Flight Center. The Nimbus-4 THIR data are available from April 14, 1970 (day of year 104) through March 25, 1971 (day of year 84). The THIRN4L1CH115 product contains the 11.5 micron channel data.

This product was previously available from the NSSDC with the identifier ESAD-00071 (old ID 70-025A-02E).

Tags: earth-science, infrared-wavelengths, spectral-engineering
Organization: National Aeronautics and Space Administration
Classification

A supervised learning task involves constructing a mapping from an input data space (normally described by several features) to an output space. A set of training examples---examples with known output values---is used by a learning algorithm to generate a model. This model is intended to approximate the mapping between the inputs and outputs. This model can be used to generate predicted outputs for inputs that have not been seen before. Within supervised learning, one type of task is a classification learning task, in which each output consists of one or more classes to which the corresponding input belongs. For example, we may have data consisting of observations of sunspots.  In a classification learning task, our goal may be to learn to classify sunspots into one of several types.  Each example may correspond to one candidate sunspot with various measurements or just an image.  A learning algorithm would use the supplied examples to generate a model that approximates the mapping between each supplied set of measurements and the type of sunspot.  This model can then be used to classify previously unseen sunspots based on the candidate's measurements. In this chapter, we explain several basic classification algorithms.

Tags: ames, dashlink, nasa
Organization: National Aeronautics and Space Administration
IceBridge BedMachine Greenland V005

This data set contains a bed topography/bathymetry map of Greenland based on mass conservation, multi-beam data, and other techniques. It also includes surface elevation and ice thickness data, as well as an ice/ocean/land mask.

Tags: bathymetry-seafloor-topography, climate-indicators, cryospheric-indicators, earth-science, land-surface, oceans, topography
Organization: National Aeronautics and Space Administration
Walton-Smith CTD, WS21338, WS21338_WS21338_Stn.57, 2021-12-09, 25.352N 81.2668W

Walton-Smith Conductivity, Temperature, Depth (CTD) - WS21338 - WS21338_WS21338_Stn.57 - 2021-12-09 - 25.352N 81.2668W. Hydrographic Measurements in the Gulf of Mexico. flags: 1 = good; 3 =  mean ÃÂ± 3*standard deviation; 4 = mean ÃÂ± 5*standard deviation; 9 = missing

Tags: 2021-12-09, 25.352n, 81.2668w, 911plus, acoustic, acoustic velocity, acoustics, active, altimeter, altimeter status_flag, atlantic, attenuation, attenuation/transmission, available, beam, beam_attenuation status_flag, beam_transmission status_flag, c-star, chemistry, chlorophyll, chlorophyll_a_fluorescense_in_sea_water, chlorophyll_a_fluorescense_in_sea_water status_flag, coefficient, color, conductivity, coordinate, crs, ctd, currents, data, density, depth, descent, descent_rate status_flag, dissolved, dissolved o2, dissolved_oxygen status_flag, division, downwelling, earth, earth science, ecosystems, elapsed, electrical, flag, fluorescence, fluorescense, fluorometer, flux, fraction, fractional, fractional_saturation_of_oxygen_in_sea_water, fractional_saturation_of_oxygen_in_sea_water status_flag, gom, good, grid, gulf, horizontal, identifier, instrument, instrument1, instrument10, instrument11, instrument2, instrument3, instrument4, instrument5, instrument6, instrument7, instrument8, instrument9, irradiance, laboratory, laboratory/ocean, labs, latitude, longitude, mapping, marine biodiversity observation network, meteorological, mexico, noaa, o2, ocean, ocean acoustics, ocean chemistry, ocean color, ocean optics, ocean pressure, ocean temperature, oceanographic, oceans, optical, optical properties, optics, oxygen, par, par/irradiance, percent, photon, photosynthetic, photosynthetically, photosynthetically active radiation, photosynthetically_available_radiation, photosynthetically_available_radiation status_flag, platform, practical, pressure, profile, properties, quality, quality_flag, radiance, radiation, radiative, rate, reference, salinity, salinity/density, saturarion, saturation, sbe, science, sea, sea_water_electrical_conductivity, sea_water_electrical_conductivity status_flag, sea_water_practical_salinity, sea_water_pressure, sea_water_pressure status_flag, sea_water_salinity status_flag, sea_water_sigma_t, sea_water_sigma_t status_flag, sea_water_temperature, sea_water_temperature status_flag, seabird, seapoint, seawater, second, sensor, sigma, smith, sonde, sound, spar, spatial, speed, speed_of_sound_in_sea_water, speed_of_sound_in_sea_water status_flag, spherical, star, status, stn.57, stn.57.cnv, surface, surface_downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water, surface_photosynthetically_available_radiation status_flag, system, temperature, time, transmission, transmissometer, variable, velocity, volume, volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water, volume_fraction_of_oxygen_in_sea_water, walton, walton-smith, water, water pressure, water temperature, wet, ws21338
Organization: National Oceanic and Atmospheric Administration, Department of Commerce
Walton-Smith CTD, WS17030, WS17030_WS17030Stn57.3, 2017-02-01, 25.3515N 81.655W

Walton-Smith Conductivity, Temperature, Depth (CTD) - WS17030 - WS17030_WS17030Stn57.3 - 2017-02-01 - 25.3515N 81.655W. Hydrographic Measurements in the Gulf of Mexico. flags: 1 = good; 3 =  mean ÃÂ± 3*standard deviation; 4 = mean ÃÂ± 5*standard deviation; 9 = missing. other

Tags: 2017-02-01, 25.3515n, 81.655w, 911plus, acoustic, acoustic velocity, acoustics, active, altimeter, altimeter status_flag, atlantic, attenuation, attenuation/transmission, available, beam, beam_attenuation status_flag, beam_transmission status_flag, chelsea, chelsea/seatech, chemistry, chlorophyll, chlorophyll_a_fluorescense_in_sea_water, chlorophyll_a_fluorescense_in_sea_water status_flag, coefficient, color, conductivity, coordinate, crs, ctd, currents, data, density, depth, descent, descent_rate status_flag, dissolved, dissolved o2, dissolved_oxygen status_flag, division, downwelling, earth, earth science, ecosystems, elapsed, electrical, flag, fluorescence, fluorescense, fluorometer, flux, fractional, fractional_saturation_of_oxygen_in_sea_water, fractional_saturation_of_oxygen_in_sea_water status_flag, gom, good, grid, gulf, horizontal, identifier, instrument, instrument1, instrument10, instrument11, instrument16, instrument2, instrument3, instrument4, instrument5, instrument6, instrument8, instrument9, irradiance, laboratory, laboratory/ocean, latitude, longitude, mapping, marine biodiversity observation network, meteorological, mexico, noaa, o2, ocean, ocean acoustics, ocean chemistry, ocean color, ocean optics, ocean pressure, ocean temperature, oceanographic, oceans, optical, optical properties, optics, other, oxygen, par, par/irradiance, photon, photosynthetic, photosynthetically, photosynthetically active radiation, photosynthetically_available_radiation, photosynthetically_available_radiation status_flag, platform, practical, pressure, profile, properties, quality, quality_flag, radiance, radiation, radiative, rate, reference, salinity, salinity/density, saturarion, saturation, sbe, science, sea, sea_water_electrical_conductivity, sea_water_electrical_conductivity status_flag, sea_water_practical_salinity, sea_water_pressure, sea_water_pressure status_flag, sea_water_salinity status_flag, sea_water_sigma_t, sea_water_sigma_t status_flag, sea_water_temperature, sea_water_temperature status_flag, seabird, seapoint, seatech, seawater, second, sensor, sigma, smith, sonde, sound, spar, spatial, speed, speed_of_sound_in_sea_water, speed_of_sound_in_sea_water status_flag, spherical, status, surface, surface_downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water, surface_photosynthetically_available_radiation status_flag, system, temperature, time, transmission, transmissometer, variable, velocity, volume, volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water, walton, walton-smith, water, water pressure, water temperature, weatherbird, ws17030, ws17030stn57.3, ws17030stn57.3.cnv
Organization: National Oceanic and Atmospheric Administration, Department of Commerce