ASDC | PREFIRE_SAT2_AUX-SAT

PREFIRE Level NA

Entry Title: PREFIRE Auxiliary Satellite Data for PREFIRE Satellite 2 R01

Entry ID: PREFIRE_SAT2_AUX-SAT_R01

Tropospheric Composition

Description

PREFIRE (Polar Radiant Energy in the Far InfraRed Experiment) Auxiliary Satellite Data for PREFIRE Satellite 2 contains data fields extracted from external satellite datasets for each coincident PREFIRE Thermal Infrared Spectrometer (TIRS-PREFIRE) field of view, which is then used to process PREFIRE Level 2 and 3 products. Dual CubeSats each carry a TIRS-PREFIRE, a push broom spectrometer with 63 channels measuring mid- and far-infrared (FIR) radiation from approximately 5 to 53 µm. Most polar emissions are in the FIR but have not been measured on a large scale. PREFIRE aims to fill knowledge gaps in the global energy budget by more accurately characterizing polar emissions. This information will then be assimilated into global circulation and other models to predict future conditions more accurately.

This collection contains surface-type information from VIIRS, Aqua, and NISE (SSMIS). Its primary purpose is to provide surface type information for the PREFIRE Level 2 spectral flux product (PREFIRE_SAT2_2B-FLX) and the Level 3 surface emissivity product (PREFIRE_SAT2_3-SFC-SORTED-ALLSKY), which is sorted by surface type.

Science data retrieval started June 29, 2024 and is ongoing. Geographic coverage is global, with the greatest concentration of data in the polar regions. Within the orbital swath there are eight distinct tracks of data associated with the eight separate spatial scenes for each PREFIRE-TIRS. At the beginning of the mission, the approximate scene footprint sizes were 11.8 km x 34.8 km (cross-track x along-track), with gaps between each scene of approximately 24.2 km. The entire swath was ~264 km across. Note that the scene footprint and swath sizes quoted here are for the orbit altitude soon after launch. However, the footprint size will slowly become smaller as the orbit altitude decreases with time. This data has a temporal resolution of 0.707 seconds and is available in netCDF-4.

The auxiliary satellite data for the sister instrument aboard PREFIRE-SAT1 can be found in the PREFIRE_SAT1_AUX-SAT collection.

DOI

10.5067/PREFIRE-SAT2/PREFIRE/AUX-SAT_L3.R01

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From GCMD Science Keywords:

SNOW COVER
LAND/OCEAN/ICE FRACTION
SEA ICE CONCENTRATION

PREFIRE

Data Distribution

File Format(s):

netCDF-4

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Spatial Information

Spatial Coverage: (S: -84, N: 84), (W: -180, E: 180)
Spatial Coverage Type: Horizontal
Coordinate System: Geodetic
Granule Spatial Representation: Geodetic

Locations

GLOBAL POLAR ARCTIC

Temporal Information

Temporal Coverage: 2024-06-29 - Present

Platforms

Earth Observation Satellites

GCOM-W1

Global Change Observation Mission 1st-Water

AMSR2

Advanced Microwave Scanning Radiometer 2

NOAA-20

Joint Polar Satellite System - 1

VIIRS

Visible-Infrared Imager-Radiometer Suite

Suomi-NPP

Suomi National Polar-orbiting Partnership

VIIRS

Visible-Infrared Imager-Radiometer Suite

DMSP 5D-3/F18

Defense Meteorological Satellite Program-F18

SSMIS

Special Sensor Microwave Imager/Sounder

PREFIRE-SAT2

Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite-2

Metadata Dates

Created on 2024-07-01

Last updated on 2024-07-25

PREFIRE Level NA

Entry Title: PREFIRE Auxiliary Satellite Data for PREFIRE Satellite 2 R01

Entry ID: PREFIRE_SAT2_AUX-SAT_R01

Tropospheric Composition

DOI

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Keywords

From GCMD Science Keywords:

Data Distribution

File Format(s):

Spatial Information

Locations

Temporal Information

Platforms

Earth Observation Satellites

Global Change Observation Mission 1st-Water

AMSR2

Advanced Microwave Scanning Radiometer 2

Joint Polar Satellite System - 1

VIIRS

Visible-Infrared Imager-Radiometer Suite

Suomi National Polar-orbiting Partnership

VIIRS

Visible-Infrared Imager-Radiometer Suite

Defense Meteorological Satellite Program-F18

SSMIS

Special Sensor Microwave Imager/Sounder

Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite-2

Metadata Dates