ASDC | PREFIRE_SAT1_AUX-MET

PREFIRE Level NA

Entry Title: PREFIRE Auxiliary Meteorology Data for PREFIRE Satellite 1 version R01

Entry ID: PREFIRE_SAT1_AUX-MET_R01

Tropospheric Composition

Description

Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Auxiliary Meteorology Data for PREFIRE Satellite 1 (PREFIRE_SAT1_AUX-MET) contains GEOS-IT analyses and VIIRS satellite data that are subsets and interpolations corresponding to data collected by the PREFIRE Thermal Infrared Spectrometer (TIRS-PREFIRE) aboard PREFIRE-SAT1. Dual PREFIRE CubeSats each carry a PREFIRE Thermal Infrared Spectrometer (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.

PREFIRE_SAT1_AUX-MET contains surface and skin temperatures, land fraction, sea ice concentration, snow cover, surface pressure, temperature profiles, pressure profiles, O3 profiles, wind velocity profiles, and surface type.

Science data retrieval started July 24, 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 meteorology data for the sister instrument aboard PREFIRE-SAT2 can be found in the PREFIRE_SAT2_AUX-MET collection.

DOI

10.5067/PREFIRE-SAT1/PREFIRE/AUX-MET_L0.R01

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Data User Guide Auxiliary Meteorology (AUX-MET)

From GCMD Science Keywords:

SNOW COVER
AIR TEMPERATURE > SURFACE TEMPERATURE
SPECIFIC HUMIDITY > HUMIDITY > WATER VAPOR INDICATORS
ATMOSPHERIC PRESSURE MEASUREMENTS
SURFACE TEMPERATURE
WIND VELOCITY/SPEED PROFILES > WIND PROFILES
SKIN TEMPERATURE > SURFACE TEMPERATURE
SURFACE PRESSURE
SURFACE WINDS
WIND DIRECTION PROFILES > WIND PROFILES
LAND/OCEAN/ICE FRACTION
SEA ICE CONCENTRATION

SURFACE TYPE, REANALYSIS

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 Vertical
Coordinate System: Geodetic
Granule Spatial Representation: Geodetic

Locations

GLOBAL ARCTIC POLAR

Temporal Information

Temporal Coverage: 2024-07-24 - Present

Platforms

Earth Observation Satellites

PREFIRE-SAT1

Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Satellite-1

Metadata Dates

Created on 2024-07-01

Last updated on 2024-07-18