ASDC | PREFIRE_SAT2_3-SFC-SORTED-ALLSKY

PREFIRE Level 3

Entry Title: Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Surface Emissivity Sorted All-sky Climatology from PREFIRE Satellite 2 R01

Entry ID: PREFIRE_SAT2_3-SFC-SORTED-ALLSKY_R01

Radiation Budget

Description

Polar Radiant Energy in the Far InfraRed Experiment (PREFIRE) Surface Emissivity Sorted All-sky Climatology from PREFIRE Satellite 2 (PREFIRE_SAT2_3-SFC-SORTED=ALLSKY) contains monthly climatologies of the Level 2 PREFIRE Surface Emissivity from the PREFIRE Satellite 2 collection (PREFIRE_SAT2_2B_SFC), which is derived from data collected by the PREFIRE Thermal Infrared Spectrometer (TIRS-PREFIRE) aboard PREFIRE-SAT2. Dual 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_3-SFC-SORTED-ALLSKY climatologies include 1) gridded, time-averaged spectral emissivity sorted by surface type, and 2) gridded standard deviations of time-averaged spectral emissivity sorted by surface type. The grids are 1°x1° and time averaging is currently monthly. Spatially, the cross-track dimension is retained, which consists of 8 distinct tracks. Full swath climatologies will be generated in addition to ascending- and descending-only subsets to account for diurnal variability. The purpose of this collection is to identify surface emissivity behaviors based on surface type and to assimilate PREFIRE surface emissivity data into climate models to further understand and more accurately predict future climates.

The data format is NetCDF4.

The sorted surface emissivity climatologies for the sister instrument aboard PREFIRE-SAT1 can be found in the PREFIRE_SAT1_3-SFC-SORTED-ALLSKY collection.

DOI

10.5067/PREFIRE-SAT2/PREFIRE/SFC-SORTED-ALLSKY_L3.R01

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USER'S GUIDE

Data User Guide Level 3B Monthly Mean Surface Emissivity and Standard Deviation Sorted by Surface Type (3-SFC-SORTED-ALLSKY)

From GCMD Science Keywords:

EMISSIVITY
EARTH RADIATION BUDGET
UPWELLING LONGWAVE RADIATION > LONGWAVE RADIATION

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

ARCTIC POLAR GLOBAL

Temporal Information

Temporal Coverage: 2024-06-29 - Present

Platforms

Earth Observation Satellites

PREFIRE-SAT2

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

TIRS-PREFIRE

Thermal InfraRed Spectrometer

Metadata Dates

Created on 2024-07-01

Last updated on 2024-07-01