ASDC | CER_SSF1deg-Hour_NOAA20-VIIRS

CERES Level 3

Entry Title: CERES Regionally Averaged TOA Fluxes, Clouds and Aerosols Hourly NOAA-20 Edition 1C

Entry ID: CER_SSF1deg-Hour_NOAA20-VIIRS_Edition1C

Aerosols Clouds Radiation Budget

Description

CER_SSF1deg-Hour_NOAA20-VIIRS_Edition1C is the NOAA-20 Clouds and the Earth's Radiant Energy System (CERES) Level 3 Single Scanner Footprint (SSF) Edition1C observed Top of Atmosphere (ToA) broadband radiances and fluxes data product. The SSF One Degree (SSF1deg) Hour provides data hourly on a 1-degree latitude and longitude global grid from the NOAA-20 CERES Flight Model 6(FM6) instantaneous footprint data. The last CERES instrument, Flight Model (FM) 6, was launched on board the Joint Polar-Orbiting Satellite System 1 (JPSS-1) satellite, now known as NOAA-20, on November 18, 2017. The data product begins May 1, 2018, and is in progress. The product is distributed in daily Hierarchical Data Format (HDF) 4 files. The file contains data, where observed, for each 24 hours of the day and provides global coverage over a day.

The SSF1deg-Hour granule contains instantaneous gridded CERES FM6 Earth viewing unfiltered radiances for the shortwave (SW), longwave (LW) (determined from the difference between total and SW), and LW channel broadband. The SW, LW, and LW-channel radiances at spacecraft altitude are converted to Top of Atmosphere (ToA) fluxes based on the co-located Visible Infrared Imaging Radiometer Suite (VIIRS) imager-defined scene. The ToA fluxes are provided for both clear-sky and total-sky conditions. The incoming daily solar irradiance is from the Solar Radiation and Climate Experiment (SORCE) and Total Solar Irradiance (TSI). These ToA fluxes are used to estimate surface fluxes. The VIIRS radiances are used with CERES-specific cloud mask, and cloud property retrievals are stratified into four atmospheric layers: surface to 700 mb, 700 mb to 500 mb, 500 to 300 mb, and above 300 mb along with the total. Each cloud layer has properties such as amount, height, temperature, pressure, optical depth, emissivity, phase, water path, and water particle size. The cloud properties are averaged for day and night (24-hour) and day-only periods.

This product uses the instantaneous footprint-level product, CER_SSF_NOAA20-VIIRS_Edition1C, as input. It is the basis for the SSF1deg-Day and SSF1deg-Month NOAA20-VIIRS_Edition1C products, which provide daily and monthly averages by temporally interpolating between CERES observations.

DOI

10.5067/NOAA20/CERES/SSF1DEGHOUR_L3.001C

Citation Styles for this Dataset

VIEW RELATED INFORMATION

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

NASA EOS ATB Documents: CERES

DATA CITATION GUIDELINES

How to cite ASDC data

GENERAL DOCUMENTATION

CERES Overview of NOAA-20

REQUIREMENTS AND DESIGN

CERES Input Data Sources

From GCMD Science Keywords:

CLOUD BASE TEMPERATURE > CLOUD PROPERTIES
ALBEDO
SOLAR IRRADIANCE
SHORTWAVE RADIATION
RADIATIVE FLUX
WIND SPEED > SURFACE WINDS
INCOMING SOLAR RADIATION
CLOUD LIQUID WATER/ICE > CLOUD MICROPHYSICS
CLOUD HEIGHT > CLOUD PROPERTIES
AEROSOL OPTICAL DEPTH/THICKNESS
LONGWAVE RADIATION
OUTGOING LONGWAVE RADIATION
CLOUD TOP PRESSURE > CLOUD PROPERTIES
SURFACE PRESSURE
CLOUD OPTICAL DEPTH/THICKNESS > CLOUD MICROPHYSICS
SKIN TEMPERATURE > SURFACE TEMPERATURE
CLOUD DROPLET CONCENTRATION/SIZE > CLOUD MICROPHYSICS
CLOUD TOP TEMPERATURE > CLOUD PROPERTIES
NET RADIATION
CLOUD TOP HEIGHT > CLOUD PROPERTIES
CLOUD BASE PRESSURE > CLOUD PROPERTIES
TOTAL PRECIPITABLE WATER > WATER VAPOR INDICATORS
CLOUD FRACTION > CLOUD PROPERTIES
CLOUD EMISSIVITY > CLOUD RADIATIVE TRANSFER

Data Distribution

File Format(s):

netCDF-4

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Spatial Information

Spatial Coverage: (S: -90, N: 90), (W: -180, E: 180)
Spatial Coverage Type: Horizontal
Coordinate System: Cartesian
Granule Spatial Representation: Cartesian

Locations

GLOBAL

Temporal Information

Temporal Coverage: 2018-05-01 - Present

Platforms

Earth Observation Satellites

NOAA-20

Joint Polar Satellite System - 1

CERES-FM6

Clouds and the Earth's Radiant Energy System - Flight Model 6

Total Detector Shortwave Detector Longwave Detector

Metadata Dates

Created on 2024-04-08

Last updated on 2024-06-25