ASDC | DSCOVR_EPIC_L2_AER

DSCOVR Level 2

Entry Title: DSCOVR EPIC Level 2 UV Aerosol Version 3

Entry ID: DSCOVR_EPIC_L2_AER_03

Aerosols Clouds

Description

DSCOVR_EPIC_L2_AER_03 is the Deep Space Climate Observatory (DSCOVR) Enhanced Polychromatic Imaging Camera (EPIC) Level 2 UV Aerosol Version 3 data product. Observations for this data product are at 340 and 388 nm and are used to derive near UV (ultraviolet) aerosol properties. The EPIC aerosol retrieval algorithm (EPICAERUV) uses a set of aerosol models to account for the presence of carbonaceous aerosols from biomass burning and wildfires (BIO), desert dust (DST), and sulfate-based (SLF) aerosols. These aerosol models are identical to those assumed in the OMI (Ozone Monitoring Instrument) algorithm (Torres et al., 2007; Jethva and Torres, 2011).

Aerosol data products generated by the EPICAERUV algorithm are aerosol extinction optical depth (AOD) and single scattering albedo (SSA) at 340, 388, and 500 nm for clear sky conditions. AOD of absorbing aerosols above clouds is also reported (Jethva et al., 2018). In addition, the UV Aerosol Index (UVAI) is calculated from 340 and 388 nm radiances for all sky conditions. AOD is a dimensionless measure of the extinction of light y aerosols due to the combined effect of scattering and absorption. SSA represents the fraction of extinction solely due to aerosol scattering effects. The AI is a residual parameter that quantifies the difference in spectral dependence between measured and calculated near UV radiances, assuming a purely molecular atmosphere. Because most of the observed positive residuals are associated with absorbing aerosols, this parameter is commonly known as the UV Absorbing Aerosol Index. EPIC-derived aerosol parameters are reported at a 10 km (nadir) resolution.

DOI

10.5067/EPIC/DSCOVR/L2_AER_03

Citation Styles for this Dataset

Publications which Cite this Collection

Ahn, Changwoo; Torres, Omar; Jethva, Hiren; Tiruchirapalli, Ramaswamy; Huang, Liang‐Kang (2020). Evaluation of Aerosol Properties Observed by DSCOVR/EPIC Instrument From the Earth‐Sun Lagrange 1 Orbit.

Resources and Documentation

Earthdata Forum

VIEW RELATED INFORMATION

ALGORITHM DOCUMENTATION

Description of the DSCOVR/EPIC volcanic SO2 Level 2 Algorithm

DATA CITATION POLICY

How to cite ASDC data

GENERAL DOCUMENTATION

DSCOVR EPIC UV Aerosol Products Overview

PROCESSING HISTORY

EPIC Data Format Control Book Specification, Version 3, September 19, 2018

PRODUCT QUALITY ASSESSMENT

EPIC Geolocation Quality Summary Algorithm Revision 06 Product Version 03

PUBLICATIONS

Publications Listing for DSCOVR EPIC

From GCMD Science Keywords:

ATMOSPHERIC CHEMISTRY
DUST/ASH/SMOKE
PARTICULATE MATTER
AEROSOL OPTICAL DEPTH/THICKNESS
CLOUD FRACTION > CLOUD PROPERTIES
AEROSOLS
UV AEROSOL INDEX > AEROSOL OPTICAL DEPTH/THICKNESS

Data Distribution

File Format(s):

HDF-EOS5

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Spatial Information

Spatial Coverage: (S: -90, N: 90), (W: -180, E: 180)
Spatial Coverage Type: Not provided
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

GLOBAL

Temporal Information

Temporal Coverage: 2015-06-16 - Present

Platforms

Solar/Space Observation Satellites

DSCOVR

Deep Space Climate Observatory

EPIC

Earth Polychromatic Imaging Camera

Metadata Dates

Created on 2020-10-29

Last updated on 2023-08-15