Aerosol Optical Thickness (100 KM) (AERO100)
The primary products are global one degree maps of aerosol optical thickness based on one week's worth of data. Currently they are created from AVHRR channel 1 optical thickness retrievals from AVHRR global area coverage (GAC) data. Optical thickness, or optical depth,is a dimensionless quantity that indicates the amount of depletion that a beam of radiation undergoes as it passes through a layer of the atmosphere. Optical depth is a function of the density, composition, temperature, pressure, and volume of the layer. Aerosols are defined as suspensions of liquid droplets or solid particles in the atmosphere, including dust, smoke, sand, volcanic ash, sea spray and smog. Available Time Period: 1987-06 -
Present
Advanced Scatterometer Level 1B (ASCAT)
ASCAT is a real aperture radar operating at 5.255 GHz (C-band) and using vertically polarized antennae. It transmits a long pulse with Linear Frequency Modulation ("chirp"). Ground echoes are received by the instrument and, after de-chirping, the backscattered signal is spectrally analyzed and detected. In the power spectrum, frequency can be mapped into slant range provided the chirp rate and the Doppler frequency are known. The above processing is in effect a pulse compression, which provides range resolution. Available Time Period: 20070521 -
Present
Advanced Very High Resolution Radiometer (AVHRR)
The Advanced Very High Resolution Radiometer (AVHRR) is a cross-track scanning system with five spectral bands having a resolution of 1.1 km and a frequency of earth scans twice per day (0230 and 1430 local solar time). There are three data types produced from the POES AVHRR. The Global Area Coverage (GAC) data set is reduced resolution image data that is processed onboard the satellite taking only one line out of every three and averaging every four of five adjacent samples along the scan line; the Local Area Coverage (LAC) data set is recorded onboard at original resolution (1.1 km) for part of an orbit and later transmitted to earth; and the High Resolution Picture Transmission (HRPT) is real-time downlink data. A fourth data type, Full Resolution Area Coverage (FRAC 1.1 km) is now available daily for the entire globe with the launch of MetOp-A, on October 19, 2006, Europe's first polar orbiting operational meteorological satellite system and the first of the European contribution to the Initial Joint Polar-Orbiting Operational Satellite System (IJPS). AVHRR data provide opportunities for studying and monitoring vegetation conditions in ecosystems including forests, tundra and grasslands. Applications include agricultural assessment, land cover mapping, producing image maps of large areas such as countries or continents, and tracking regional and continental snow cover. AVHRR data are also used to retrieve various geophysical parameters such as sea surface temperatures and energy budget data. Available Time Period: 19781105 -
Present
Coast Watch full resolution swath files in hdf format (CW_SWATH)
CoastWatch swath data derived from AVHRR is full pass swath projection data from different AVHRR receiving stations. The files contain multiple data variables stored using the HDF-4 Scientific Data Sets (SDS) model. The product contents are channel 1 albedo, channel 2 albedo, channel 3a albedo, channel 3 brightness temperature, channel 4 brightness temperature, channel 5 brightness temperature, moisture corrected sea-surface-temperature, 8-bit CLAVR ocean cloud mask, 2-bit CLAVR-X cloud mask, satellite zenith angle, solar zenith angle and relative azimuth angle. Available Time Period: 20031110 -
Present
CoastWatch Regions in HDF format (CW_REGION)
The mapped data derived from AVHRR is divided into files for CoastWatch regions of interest. Each file contains multiple data variables stored using the HDF-4 Scientific Data Sets (SDS) model. The product contents are channel 1 albedo, channel 2 albedo, channel 3a albedo, channel 3 brightness temperature, channel 4 brightness temperature, channel 5 brightness temperature, moisture corrected sea-surface-temperature, 8-bit CLAVR ocean cloud mask, 2-bit CLAVR-X cloud mask, satellite zenith angle, solar zenith angle, relative azimuth angle and 8-bit graphics layers. Available Time Period: 20031110 -
Present
CoastWatch, Alaska Regional Node (CWALA)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19910414 -
20040308
CoastWatch, Caribbean Regional Node (CWCAR)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19910530 -
20040308
CoastWatch, Gulf of Mexico (CWGOM)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19910530 -
20040308
CoastWatch, Great Lakes Node (CWGRL)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19901009 -
20040308
CoastWatch, Hawaii Regional Node (CWHAW)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19911120 -
20040308
CoastWatch, Northeast Regional Node (CWNOE)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19910527 -
20040308
CoastWatch, Southeast Regional Node (CWSOE)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19890216 -
20040308
CoastWatch, West Coast Regional Node (CWWEC)
The sea surface temperature (SST) products were derived from NOAA's Polar-orbiting Operational Environmental Satellites (POES) for the coastal United States. They were created by NOAA CoastWatch Program and are now only available through this website. CoastWatch started with only POES/AVHRR SST data for the East Coast, but later added more regional nodes of Alaska, Caribbean, Gulf of Mexico, Hawaii, Great Lakes, Northeast, Southeast and West Coast. The products provided here are in the original CoastWatch Format, which does not apply to the SST data currently created. The new data is now provided in HDF format, which is also available through this web site. Available Time Period: 19911120 -
20040308
GCOM-W1 Advanced Microwave Scanning Radiometer 2 (AMSR2) RDR and TLE (GW1A2RTLE) (restricted)
ACCESS TO THE DATA IS RESTRICTED. The Global Change Observation Mission (GCOM) is a series of JAXA Earth Observation Missions as a successor to the EOS ADEOS 2 satellite and to the Aqua Mission. GCOM is, together with the GPM Mission, Japan's contribution to the GEOSS (Global Earth Observation System of Systems). The mission of GCOM-W1 is to observe the water cycle. The Advanced Microwave Scanning Radiometer-2 (AMSR2) aboard the GCOM-W1 detects microwave signals emitted naturally from the ground, sea surface and atmosphere, using six different frequency bands ranging from 7 GHz to 89 GHz. The AMSR2 microwave observations can be used to assess precipitation, vapor amounts, wind velocity above the ocean, sea water temperature, water levels on land areas, and snow depths. This collection contains the AMSR2 Raw Data Records (RDR) which are used to develop the higher-level processed products, Sensor and Environmental Data Records (SDR and EDR). Also, included in this data collection are the GCOM-W1 Two Line Elements and Mission Notices. ACCESS TO THE DATA IS RESTRICTED.
Global Ozone Monitoring Experiment-2 Level 1B (GOME)
GOME-2 is a scanning spectrometer used to measure profiles of atmospheric ozone and to measure other trace gases in the atmosphere. It is an adaptation of a similar instrument already successfully flown on ESA's ERS-2 satellite. It is a nadir viewing across-track scanning spectrometer with a swath width of 1920 km. It measures the radiance back-scattered from the atmosphere and the surface of the Earth in the ultraviolet and visible range. The instrument uses four channels to cover the full spectral range from 240 to 790 nm with a spectral resolution of 0.2 nm at the lower end of the range, rising to 0.4 nm at the higher end. The instrument employs a mirror mechanism which scans across the satellite track with a maximum scan angle that can be varied from ground control, and three multi-spectral samples per scan. The ground pixel size of GOME-2 is 40 x 80 km. Available Time Period: 20070521 -
Present
Global Ozone Monitoring Experiment-2 Daily Data (GOME_DAILY)
The GOME-2 total ozone retrieval algorithm is based on OMI/TOMS (Ozone Monitoring Instrument / Total Ozone Mapping Spectrometer) V8 algorithm, which is a three-step process of successive estimation improvement. The algorithm uses a pair of wavelengths 331nm and 318nm (340nm and 331nm for high solar zenith angle) to derive total ozone and surface reflectivity. It first calculates N-value at the pair of wavelengths using input radiance/irradiance from GOME-2 level 1b data. With its geo-reference information, such as latitude, longitude, solar zenith angle, etc., the measured N-value is compared with pre-calculated N-value to derive the step-one total ozone and reflectivity. The pre-calculated N-value is generated by using OTMRAD forward radiative transfer model. In order to obtain step-two ozone, the profiles of ozone and temperature climatologies are then applied at all levels to account for seasonal and latitudinal variations in profile shape. In the last step, the step-two ozone estimation is modified to correct for wavelength dependent effects (tropospheric aerosol and sun glint) and local upper level profile shape effects. The algorithm writes out all the retrieval variables and corresponding geo-referenced information to PMF at the end of each scan process. Each day, the granules are accumulated to create the level 3 gridded map in ASCII and GRIB2 format. The Level 3 products are created by computing weighted averages of the Level 2 products with Fields of View intersecting each 1.25 degrees Longitude by 1.00 degree Latitude grid cell. (In polar regions the cells increase to 5.00 degrees Longitude.) The weights scale as the reciprocal of the relative path lengths (one divided by the sum of the secant of view angle plus secant of solar zenith angle) for each observation. The Magnesium II information is extracted daily from the GOME-2 1B granules, as soon as new solar radiance measurements are available. The product includes a 61-wavelength subset of the daily solar spectrum and a Mg II core-to-wing ratio for the spectrum. Our Mg II Index value is a simple ratio of the average of the irradiance measurements near three core wavelengths to the average of the irradiance measurements near four wavelengths at the wings, two at each wing. Each irradiance value is computed by interpolation of the pair of values for GOME-2 surrounding the following positions: 276.82, 276.97, 279.78, 279.92, 280.07, 283.03, and 283.17 nm. The daily gridded total ozone and Magnesium II products are available in ASCII format. Available Time Period: 20071001 -
Present
Global Ozone Monitoring Experiment-2 Level 2 (GOME_L2)
The GOME-2 total ozone retrieval algorithm is based on OMI/TOMS (Ozone Monitoring Instrument / Total Ozone Mapping Spectrometer) V8 algorithm, which is a three-step process of successive estimation improvement. The algorithm uses a pair of wavelengths 331nm and 318nm (340nm and 331nm for high solar zenith angle) to derive total ozone and surface reflectivity. It first calculates N-value at the pair of wavelengths using input radiance/irradiance from GOME-2 level 1b data. With its geo-reference information, such as latitude, longitude, solar zenith angle, etc., the measured N-value is compared with pre-calculated N-value to derive the step-one total ozone and reflectivity. The pre-calculated N-value is generated by using a forward radiative transfer model. In order to obtain step-two ozone, the profiles of ozone and temperature climatologies are then applied at all levels to account for seasonal and latitudinal variations in profile shape. In the last step, the step-two ozone estimation is modified to correct for wavelength dependent effects (tropospheric aerosol and sun glint) and local upper level profile shape effects. The algorithm writes out all the retrieval variables and corresponding geo-referenced information to a Product Master File (PMF) at the end of each scan process. The PMF files are available in sequential binary format for each three minute granule. Available Time Period: 20071001 -
Present
IJPS Companion File (IJPS_COMP)
There are two types of Initial Joint Polar-orbiting Operational Satellite (IJPS) System Companion files: 1. NOAA AIP 1a telemetry file - contains the AIP minor frame data as generated on-board the satellite for the orbit. An AIP minor frame contains packed, or commutated, instrument data and other satellite data covering a time period of 0.1 seconds. 2. IJPS Ancillary file - a tar file that contains all of the ancillary input files required by the preprocessor in order to identically reproduce its output (e.g., the 1b* data sets). These files include instrument-level 1a files, control files, navigation-related files, and calibration-related files. Available Time Period: 20040720 -
Present
Infrared Atmospheric Sounding Interferometer 3X3 (IASI3X3)
The level 1C IASI data are collocated to points on a 3x3 degree global grid. This product is generated daily and consists of two files, one for ascending orbits and the other for descending orbits. Available Time Period: 20071030 -
Present
Infrared Atmospheric Sounding Interferometer Granule Data (IASI)
The Infrared Atmospheric Sounding Interferometer is flown on METOP-A. The main goal is to provide atmospheric emission spectra to derive temperature and humidity profiles with high vertical resolution and accuracy. It is a Michelson interferometer with spectral coverage between 3.6 and 15.5 micrometers. At nadir, the instrument samples data at intervals of 25 km along and a cross track, each sample having a maximum diameter of about 12 km. The level 1C data is geo-located, calibrated and apodized. Datatypes available are Level 1C granules from EUMETSAT, Level 2 and CCR profiles from NOAA. Available Time Period: 20070521 -
Present
MIRS Orbital Data (MIRS_ORB)
The MIRS was developed with an end-to-end capability of calibrating and characterizing the radiances measured from satellite-based microwave instruments and retrieving the environmental data records with state of the art algorithm science. This system is an upgrade from the NESDIS operational Microwave Surface and Precipitation Products System (MSPPS) and is a one-stop resource for microwave-derived products from various polar-orbiting satellite instrument configurations. The MIRS is capable of optimally retrieving atmospheric and surface state parameters and provides physical-based retrievals/products in a consistent fashion. It is also designed to be instrument/spectrum-independent, parameter-independent, and platform-independent. The MIRS produces advanced near-real-time operational surface and precipitation products in all-weather and over all-surface conditions using brightness temperatures from multiple microwave instruments. Current instruments are the Advanced Microwave Sounding Unit-A (AMSU-A) and the Microwave Humidity Sounder (MHS) onboard NOAA-18 and MetOp-A satellites and the Special Sensor Microwave Imager/Sounder (SSMIS) aboard the DMSP 5D-2/F16 satellite. Current operational Sounding Products are temperature, moisture, and hydrometeor profiles over ocean and land available in the HDF-EOS and NetCDF profile format. Current operational Precipitation and Surface Products are total precipitable water over ocean and land, land surface temperature, land surface emissivity, cloud liquid water, sea ice concentration, snow water equivalent, snow cover, ice water path, rain water path, and rainfall rate available in the HDF-EOS and NetCDF image format. Available Time Period: 20070830 -
Present
MSPPS Mapped Data (MSPPS_FXAR)
Microwave Surface and Precipitation Products System (MSPPS) produces near real-time operational surface and precipitation products from the AMSU-A, AMSU-B and MHS instruments aboard NOAA and METOP satellites. The operational products include Antenna Temperatures, Total Precipitable Water, Cloud Liquid Water, Sea Ice Concentration, Land Surface Temperature, Land Surface Emissivity at 23.8, 31.4 and 50.3 GHz, Snow Cover, Rain Rate, Snow Water Equivalent and Ice-Water Path. Both Level-II (orbital) and Level-III (grid) products are available.The MSPPS grid products include Snow Cover, Rain Rate and Snow-Water Equivalent from AMSU-B/MHS and Sea Ice Concentration from AMSU-A. These level 3 geophysical products are mapped with the 1/16th-mesh Polar Stereographic projection and updated daily. They are available in HDF-EOS format. Available Time Period: 20030712 -
Present
MSPPS Orbital Data (MSPPS_ORB)
Microwave Surface and Precipitation Products System (MSPPS) produces near real-time operational surface and precipitation products from the AMSU-A, AMSU-B and MHS instruments aboard NOAA and METOP satellites. The operational products include Antenna Temperatures, Total Precipitable Water, Cloud Liquid Water, Sea Ice Concentration, Land Surface Temperature, Land Surface Emissivity at 23.8, 31.4 and 50.3 GHz, Snow Cover, Rain Rate, Snow Water Equivalent and Ice-Water Path. Both Level-II (orbital) and Level-III (grid) products are available.The MSPPS orbital products include Antenna Temperatures from AMSU-A and AMSU-B/MHS, Total Precipitable Water, Cloud Liquid Water, Sea Ice Concentration, Land Surface Temperature, Land Surface Emissivity at 23.8, 31.4 and 50.3 GHz from AMSU-A and Snow Cover, Rain Rate, Ice-Water Path and Snow-Water Equivalent from AMSU-B/MHS. These level 2 products are available on an orbital basis for each instrument in BUFR and HDF-EOS formats. For validation purpose, the similar products from SSMI Sensor Data Records and Environmental Data Records are also converted into HDF-EOS format and included as a part of the MSPPS suite and are available to users. Available Time Period: 1997 -
Present
Pathfinder (from AVHRR) (AVHRRPF)
The current AVHRRPF (or PATMOS) data sets cover the following satellites and time periods: NOAA-7 (9/81 - 1/85), NOAA-9 (2/85 - 10/88), NOAA-11 (11/88 - 8/94), and NOAA 14 (3/96 - 12/00). PATMOS-A1 computes statistics of the radiances in all five channels of the AVHRR from clear and cloudy 2x2 pixel arrays and from the total cloud amount for a total of 71 parameters. PATMOS-A2 computes statistics of aerosol optical thickness over the oceans, shortwave absorbed radiation, outgoing longwave radiation parameters of the radiation budget at the top of the atmosphere. Data presented here is extracted from PATMOS-A2 monthly mean. Available Time Period: 19810715 -
20001214
Radiation Budget Data (RBUD)
The Radiation Budget product suite is produced from the primary morning and afternoon Polar Orbiters. Product shows a measure of the longwave radiation emitted (W/m^2) by the earth-atmosphere system to space. The observations are displayed on a one degree equal area map for the day and night. Available Time Period: 1979-01 -
Present
Tiros Operational Vertical Sounder (TOVS)
The TIROS Operational Vertical Sounder (TOVS) system consisted of three instruments: the High Resolution Infrared Radiation Sounder Version 2 (HIRS/2), the Microwave Sounding Unit (MSU) and the Stratospheric Sounding Unit (SSU). This system was onboard the NOAA-6 through NOAA-14 and TIROS-N satellites. The Advanced TOVS (ATOVS) replaced the TOVS instruments starting from NOAA-15 onwards. It consists of HIRS/3, the Advanced Microwave Sounding Unit-A (AMSU-A) and AMSU-B. The Microwave Humidity Sounder (MHS), developed by EUMETSAT, replaced AMSU-B on NOAA-18 and the European MetOp satellites. Currently the ATOVS is generating products from the NOAA-15, 16, 18 and METOP-A satellites. This instrument package provides information on temperature and humidity profiles, total ozone, clouds and radiation on a global scale. Available Time Period: 19781019 -
Present