CLASS distributes data from three DMSP instruments: the SSM/T-1; the SSM/T-2; and the SSM/I from which antenna temperatures (Temperature Data Records - TDR), brightness temperatures (Sensor Data Records - SDR) and derived geophysical parameters (Environmental Data Records -EDR) are derived

Microwave surface and precipitation products [known as Environmental Data Records (EDRs)] produced by Fleet Numerical Meteorology and Oceanography Center (FNMOC) from the Defense Meteorological Satellite Program's (DMSP) Special Sensor Microwave/Imager (SSM/I) instrument. The Special Sensor Microwave/ Temperature (SSM/T) and Special Sensor Microwave/moisture (SSM/T-2) sounders (both cross-track instruments), along with the SSM/I (conical scanner). Product contains maps for the northern hemisphere from SSMI EDR data for satellite DMSP-14. The maps confirm to a polar stereographic projection true at 60 degrees latitude.

Microwave surface and precipitation products [known as Environmental Data Records (EDRs)] produced by Fleet Numerical Meteorology and Oceanography Center (FNMOC) from the Defense Meteorological Satellite Program's (DMSP) Special Sensor Microwave/Imager (SSM/I) instrument. The Special Sensor Microwave/ Temperature (SSM/T) and Special Sensor Microwave/moisture (SSM/T-2) sounders (both cross-track instruments), along with the SSM/I (conical scanner). Product contains maps for the northern hemisphere from SSMI EDR data for satellite DMSP-15. The maps confirm to a polar stereographic projection true at 60 degrees latitude.

Microwave surface and precipitation products [known as Environmental Data Records (EDRs)] produced by Fleet Numerical Meteorology and Oceanography Center (FNMOC) from the Defense Meteorological Satellite Program's (DMSP) Special Sensor Microwave/Imager (SSM/I) instrument. The Special Sensor Microwave/ Temperature (SSM/T) and Special Sensor Microwave/moisture (SSM/T-2) sounders (both cross-track instruments), along with the SSM/I (conical scanner). Product contains maps for the southern hemisphere from SSMI EDR data for satellite DMSP-14. The maps confirm to a polar stereographic projection true at 60 degrees latitude.

Microwave surface and precipitation products [known as Environmental Data Records (EDRs)] produced by Fleet Numerical Meteorology and Oceanography Center (FNMOC) from the Defense Meteorological Satellite Program's (DMSP) Special Sensor Microwave/Imager (SSM/I) instrument. The Special Sensor Microwave/ Temperature (SSM/T) and Special Sensor Microwave/moisture (SSM/T-2) sounders (both cross-track instruments), along with the SSM/I (conical scanner). Product contains maps for the southern hemisphere from SSMI EDR data for satellite DMSP-15. The maps confirm to a polar stereographic projection true at 60 degrees latitude.

GVAR is the data transmission format used to broadcast environmental data measured by the independent GOES Imager and Sounder instruments. The Block 11 data files contain ancillary instrument data and metadata that may be useful to expert users.

GVAR is the data transmission format used to broadcast environmental data measured by the independent GOES Imager and Sounder instruments. The Imager data is a combination of the Block 11 and Sounder data files.

GVAR is the data transmission format used to broadcast environmental data measured by the independent GOES Imager and Sounder instruments. For access purposes, the Sounder data has been extracted out of the GVAR data stream and stored in McIDAS Area format.

GOES Mode A, AA, or AAA data collected by SMS-1, 2 and GOES-1, 2, 3, 4, 5, 6, and 7 satellites. Channels include visible and infrared bands for measuring reflectance and radiance, respectively, of earth surfaces and cloud tops.

The NOAA CoastWatch program provides sea surface temperature (SST) products derived from NOAA's Geostationary Operational Environmental Satellites (GOES). Sea surface temperature products from GOES for the coastal United States are available. Sea surface temperature from GOES is determined by applying an algorithm to GOES data. Multispectral information for channels 1, 2, 4 and 5 are used to identify clouds, wind effects, and other factors, which may affect the values, and each GOES satellite has its own regression equation. Validation of these algorithms was performed by comparing GOES-SST retrievals against a quality controlled data set from global drifting and moored buoy SST measurements. Comparisons were performed within one hour and 5km of each other. Results show that the GOES-Buoy SST has a bias of 0.5 degree C with a standard deviation less than 1 degree C.

OSTM/Jason-2 Ancillary Files

OSTM/Jason-2 Auxiliary Files

OSTM/Jason-2 Orbital Information Data

OSTM/Jason-2 Raw Level-0 Telemetry data

OSTM/Jason-2 Level-2 Geophysical Data Records

OSTM/Jason-2: NRTAVS QA Report

NOAA CoastWatch produces near real-time ocean color products, e.g. chlorophyll- a concentration and turbidity (reflectance), with data from NASA's Earth Observing System (EOS) Terra and Aqua satellites, as well as GeoEye's Orbview-2 satellite (via contractual purchase). The data is collected by selected HRPT ground stations. The level 1A data consists of raw radiance counts from eight bands (six in visible and two in near infrared spectrum), calibration data, navigation data , instrument telemetry, and selected spacecraft telemetry. Each level 2 satellite specific product has unique characteristics dependent on the sensor and the algorithm applied. While level 2 historic data is open to public, level 1 data is restricted to users covered by SeaWIFS CoastWatch contract due to limitations associated with commercial data.

The SBUV/2 instruments on the Tiros-N satellites are designed to measure the total ozone in a vertical column beneath the satellite and its distribution with height in the atmosphere. The 1b capture dataset contains (1) all SBUV/2 sensor data and support data necessary for the derivation of atmospehric ozone and solar flux; (2) instrument in-flight calibration data and housekeeping functions for monitoring post_launch instrument changes; and (3) prelaunch calibration factors, and computed current-day instrument calibration and albedo correction factors to adjust the ozone algorithm for actual instrument performance. The Product Master File (PMF) contains the ozone information derived by the algorithm, located in space and time, other meteorological information developed in support of the ozone computation, parameters indicating the validity of the individual ozone retrievals, and the radiance information derived from the SBUV/2 measurements.

The Aerosol products are produced from AVHRR data on a weekly basis. The primary products are a global 1 degree map of Aerosol Optical Thickness (AOT) based on a composite of one week worth of data.

ASCAT is a real aperture radar operating at 5.255 GHz (C-band) and using vertically polarised 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 analysed 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.

The Advanced Very High Resolution Radiometer (AVHRR) sensor is carried onboard Polar-orbiting Operational Environmental Satellites (POES) TIROS-N, NOAA-6, 8 and 10, the AVHRR Sensor measures in four spectral bands, while on the NOAA-7, 9, 11, 12 and 14, the sensor measures in five bands. The AVHRR/3 sensor on NOAA-15, 16 and 17 measures in six bands though only five are transmitted to the ground at any time.

The swath data derived from AVHRR is full pass swath projection data for 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, satellite zenith angle, solar zenith angle, and relative azimuth angle.

The mapped data derived from AVHRR is divided into files for a number of 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, satellite zenith angle, solar zenith angle, relative azimuth angle, and 8-bit graphics layers.

High Resolution, near real-time and post-dated SST and Multiple Channel SST image derived from POES AVHRR/2 over Aleutian Island, Beaufort, Anchorage, Bearing Strait, Chuckchi, Gulf of Alaska, Juneau, Vancouver, North Alaska, South Alaska, and Western Alaska. Also available are the Synoptic scale and Mesoscale SST over Aleutian Island, Northern, Western and Southern Alaska. For other Coast Watch product data over Alaska regional node follw the link for Coast Watch Alaska regional given below

Near real-time AVHRR images and high resolution multichannel SST images derived from AVHRR covering a number of regions from Central Mexico to the Eastern Caribbean. Also available are low resolution synoptic data over Western and Eastern Caribbean, and medium resolution synoptic data over various sub-regions. Two special "full coverage" files are also available for the entire region.

Near real-time AVHRR images and high resolution multichannel SST images derived from AVHRR over Texas, Louisiana & Mississippi, Western Florida, and Yucatan Peninsula. Three special "full coverage" files are also available for the entire region.

Near real-time AVHRR image and high resolution multichannel SST images derived from AVHRR over three sub-regions, Erie and Ontario, Michigan and Huron, and Superior and Northern Michigan. Also available are the Synoptic scale SST over the entire region and full region panel. For other Coast Watch product data over the Great Lakes node follow the link given below.

Mesoscale and synoptic scale, near real-time and post-dated SST image derived from POES AVHRR/2 over Hawaii Main Islsnd. Other ancillary data such as zenith angle over various Hawaii sub regions are also available. For other Coast Watch product data over Hawaii region such as altimetry from Topex/Poseidon, GOES SST, Ocean Surface Winds from ESA, SeaWIFS Ocean Surface Chlorophyllfollow the link to Coast Watch Hawaii Region given below

High resolution near real-time and post-dated SST images over Gulf of Maine, George Bank, Dump Site 106, Southern New England and Chesapeaks Bay, Northeast Synoptic and Northeast GAC, along with other ancillary data files such as solar zenith angle, satellite zenith angle, and relative azimuth angle. For other products over Northeast Region such as GOES SST, Wind speed and Bouy temperature follow the Northeast Region link given below.

The data products over Southeast Regional Node currently available from CLASS are near real-time and post-dated sea surface temperature (SST) derived from AVHRR on board NOAA polar orbiting satellites. The images are rectified to fit a Mercator map projection. The images provide partial to full coverage of the southeast from Chesapeake Bay to Florida several times daily depending on the orbital paths of the satellites. Synoptic view for the entire Southeastern region is also available.

Near real-time AVHRR image and high resolution multichannel SST images derived from AVHRR over Vancouver Island, Washington, Oregon, Northern, Central and Southern California, Northern, Central and Southern Baja Mexico. Also available are the Synoptic scale SST over West Coast, British Columbia, Northwest, Southwest, CalCOFI and Baja Mexico. For other Coast Watch product data over West Coast Regional node follow the link given below.

GRAS, the Global Navigation Satellite System Receiver for Atmospheric Sounding, is a new instrument to be developed by the European Space Agency for flight on EUMETSAT's EPS satellites. It will receive radio signals from navigation satellites through a tangential path in the atmosphere. The Doppler shift in the received signals can be processed to obtain vertical profiles of atmospheric parameters with a high degree of accuracy. GRAS will be a valuable data source and a SAF is being established to develop its use in Numerical Weather Prediction (NWP), climate studies and upper atmospheric research.

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 will be 40 x 40 km².

Global Ozone Monitoring Experiment-2 (GOME-2) Total Ozone daily data

Global Ozone Monitoring Experiment-2 (GOME-2) Total Ozone Level-2 granular data from NOAA

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.

Level 1C data (Geo-Located, calibrated, apodized) For the IASI instrument on the METOP1 satellite, colocated to a 3x3 degree global grid. The daily files consist of a single colocation at each grid point, and are separated into ascending and descending files

The Infrared Atmospheric Sounding Interferometer (IASI) is being developed by the Centre National d'Etudes Spatial (CNES) for EUMETSAT. To be carried on Metop-1, -2, -3, its primary objective is the measurement of atmospheric profiles of temperature and humidity, with much improved vertical resolution and accuracy as compared to current infrared instruments. It is a Michelson interferometer with spectral coverage between 3.6 and 15.5 µm. 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.

Microwafe Integrated Retrieval System (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. MIRS is capable of optimally retrieving atmospheric and surface state parameters and provides physical-based retrievals/products in a consistent fashion. The MIRS is also designed to be instrument/spectrum-independent, parameter-independent, and platform-independent. MIRS will produce advanced near-real-time operational surface and precipitation products in all-weather and over all-surface conditions using brightness temperatures from multiple microwave instruments.

AMSU-A and -B instruments on NOAA-15 provided a new opportunity to produce Microwave Surface and Precipitation Products System (MSPPS) from NOAA polar orbiter satellites similar to the Environmental Data Records (EDRs)] produced by Fleet Numerical Meteorology and Oceanography Center (FNMOC) from the DMSP and SSM/I instrument. MSPPS produces near real-time operational surface and precipitation products from the AMSU-A and AMSU-B instruments. These products are Antenna Temperature, Total Precipitable Water, Cloud Liquid Water, Sea Ice COncentration, Surface Emissivity at 23.8, 31.4 and 50.3 GHz, Surface Skin Temperture, Snow Cover, Rain Rate, and Ice Water Path. These data are produced as mapped geophysical products on an obit-by-orbit basis.

AMSU-A and -B instruments on NOAA-15 provided a new opportunity to produce Microwave Surface and Precipitation Products System (MSPPS) from NOAA polar orbiter satellites similar to the Environmental Data Records (EDRs)] produced by Fleet Numerical Meteorology and Oceanography Center (FNMOC) from the DMSP and SSM/I instrument. MSPPS produces near real-time operational surface and precipitation products from the AMSU-A and AMSU-B instruments. These products are Antenna Temperature, Total Precipitable Water, Cloud Liquid Water, Sea Ice COncentration, Surface Emissivity at 23.8, 31.4 and 50.3 GHz, Surface Skin Temperture, Snow Cover, Rain Rate, and Ice Water Path. These data are available on an orbital basis

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 the total cloud amount for a total of 71 parameters. PATMOS-A2, computes statistics of aerosol optical thickness over the oceans, and shortwave absorbed radiation and outgoing longwave radiation parameters of the radiation budget at the top of the atmosphere. Data presented here is extracted from PATMOS-A2 monthly mean.

The Radiation Budget product suite is produced from the primary morning and afternoon Polar Orbiters, NOAA-15, NOAA-16, and NOAA-17. There are 37-day files with daily subset files. This data is frequently used to study global climate change.

The TIROS Operational Vertical Sounder (TOVS) system consists 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 is onboard the NOAA 6 through NOAA 14 and TIROS-N satellites. Flying onboard NOAA 15, 16 and 17 are the advanced TOVS (ATOVS) system, where MSU is replaced by the Advanced Microwave Sounding Unit-A (AMSU-A) and HIRS/2 is replaced by the High Resolution Infrared Radiation Sounder Version 3 ( HIRS/3).

CLASS allows access to RADARSAT data for authorized U.S. Government users only. It permits the users to search the CLASS inventory of RADARSAT data based on data set type as well as geographic locations and acquisition date and time. The user may then order selected data sets from the inventory for electronic delivery

Product shows global (resolution 100-km) sea surface temperatures in degrees C. It is a composite gridded-image derived from 8-km resolution Global SST Observations and is generated daily on a global scale. SST is defined as the sea surface temperature tuned to in situ data at 1 meter depth.

Product shows local (14 km resolution ) sea surface temperatures (degrees C). It is a composite gridded-image derived from 8-km resolution SST Observations. It is generated every 48 hours for North America. SST is defined as the sea surface temperature tuned to in situ data at 1 meter depth.

Product shows global (resolution 50-km) sea surface temperatures in degrees C. It is a composite gridded-image derived from 8-km resolution Global SST Observations and is generated twice weekly (Tuesday and Saturday) on a global scale. SST is defined as the sea surface temperature tuned to in situ data at 1 meter depth.

The NOAA CoastWatch program provides sea surface temperature (SST) products derived from NOAA's Geostationary Operational Environmental Satellites (GOES). Sea surface temperature products from GOES for the coastal United States are available. Sea surface temperature from GOES is determined by applying an algorithm to GOES data. Multispectral information for channels 1, 2, 4 and 5 are used to identify clouds, wind effects, and other factors, which may affect the values, and each GOES satellite has its own regression equation. Validation of these algorithms was performed by comparing GOES-SST retrievals against a quality controlled data set from global drifting and moored buoy SST measurements. Comparisons were performed within one hour and 5km of each other. Results show that the GOES-Buoy SST has a bias of 0.5 degree C with a standard deviation less than 1 degree C.