ASDC | CER_SYN1deg-Month_Terra-NOAA20

CERES Level 3

Entry Title: CERES and GEO-Enhanced TOA, Within-Atmosphere and Surface Fluxes, Clouds and Aerosols Monthly Terra-NOAA20 Edition4A

Entry ID: CER_SYN1deg-Month_Terra-NOAA20_Edition4A

Aerosols Clouds Radiation Budget

Description

CER_SYN1deg-Month_Terra-NOAA20_Edition4A is the Clouds and the Earth's Radiant Energy System (CERES) and geostationary (GEO)-Enhanced Top of Atmosphere (TOA), Within-Atmosphere, and Surface Fluxes, Clouds and Aerosols Monthly Terra-NOAA20 Edition4A data product. Data was collected using the following instruments and platforms: Imaging Radiometers on the Geostationary Satellites platform, CERES Flight Model 1 (FM1), CERES FM2, CERES Scanner, and MODIS on Terra; and CERES FM6 and VIIRS on NOAA-20. Data collection for this product is ongoing.

CERES Synoptic (SYN) 1-degree products provide CERES-observed temporally interpolated TOA radiative fluxes and coincident MODIS-derived cloud and aerosol properties and include geostationary-derived cloud properties and broadband fluxes that have been carefully normalized with CERES fluxes to maintain the CERES calibration. They also contain computed initial TOA, in-atmosphere, surface fluxes, and computed fluxes adjusted or constrained to the CERES-observed TOA fluxes. The computed fluxes are produced using the Langley Fu-Liou radiative transfer model. Computations use MODIS, VIIRS, and geostationary satellite cloud properties along with atmospheric profiles provided by the NASA Global Modeling and Assimilation Office (GMAO). The adjustments to clouds and atmospheric properties are also provided. The computations are for all-sky, clear-sky, pristine (clear-sky without aerosols), and all-sky without aerosol conditions. This product provides parameters on a three-hourly temporal resolution and 1°-regional spatial scales. Fluxes are provided for clear-sky and all-sky conditions in the longwave (LW), shortwave (SW), and window (WN) regions.

CERES SYN1deg products use 1-hourly radiances and cloud property data from geostationary (GEO) imagers to accurately model variability between CERES observations. Several steps are involved in using GEO data to enhance diurnal sampling. First, GEO radiances are cross-calibrated with the MODIS imager using only data that is coincident in time and ray-matched in angle. Next, the GEO cloud retrievals are inferred from the calibrated GEO radiances. The GEO radiances are converted from narrowband to broadband using empirical regressions and then to broadband GEO TOA fluxes using Angular Distribution Models (ADMs) and directional models. A normalization technique ensures GEO and CERES TOA fluxes are consistent. Instantaneous matched gridded fluxes from CERES and GEO are regressed against one another over a month from 5°x5 ° latitude-longitude regions. The regression relation is then applied to all GEO fluxes to remove biases that depend upon cloud amount, solar and view zenith angles, and regional dependencies. The regional means are determined for 1° equal-angle grid boxes calculated by first interpolating each parameter for any missing times of the CERES/GEO observations to produce a complete 1-hourly time series for the month. Monthly means are calculated using the combination of observed and interpolated parameters from all days containing at least one CERES observation.

CERES is a critical Earth Observing System (EOS) program component. The CERES instruments provide radiometric measurements of the Earth's atmosphere from three broadband channels. The CERES missions follow the successful Earth Radiation Budget Experiment (ERBE) mission. The first CERES instrument, the protoflight model (PFM), was launched on November 27, 1997, as part of the Tropical Rainfall Measuring Mission (TRMM). Two CERES instruments (FM1 and FM2) were launched into polar orbit on board the Earth Observing System (EOS) flagship Terra on December 18, 1999. Two additional CERES instruments (FM3 and FM4) were launched on board Earth Observing System (EOS) Aqua on May 4, 2002. The CERES FM5 instrument was launched on board the Suomi National Polar-orbiting Partnership (NPP) satellite on October 28, 2011. The newest CERES instrument (FM6) was launched on board the Joint Polar-Orbiting Satellite System 1 (JPSS-1) satellite, now called NOAA-20, on November 18, 2017.

DOI

10.5067/TERRA-NOAA20/CERES/SYN1DEGMONTH_L3.004A

Citation Styles for this Dataset

VIEW RELATED INFORMATION

ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)

NASA EOS ATB Documents: CERES

ANOMALIES

CERES/Terra Regional Mean TOA Flux Uncertainties

DATA CITATION GUIDELINES

How to cite ASDC data

DATA QUALITY

Quality Summary: CERES_SYN1deg_Ed4A (10/3/2017)

GENERAL DOCUMENTATION

MICRO ARTICLE

PRODUCT USAGE

CERES Documentation: Data Products Catalog

PRODUCTION HISTORY

CERES Input Data Sources

READ-ME

View HDF Version 5 Readme

SCIENCE DATA PRODUCT SOFTWARE DOCUMENTATION

Read Software Package - SYN1deg - Direct File Download (.zip)

USER'S GUIDE

CERES SYN1deg Data Set Abstract

From GCMD Science Keywords:

CLOUD MICROPHYSICS
CLOUD MIDLAYER TEMPERATURE > CLOUD PROPERTIES
ULTRAVIOLET RADIATION
CLOUD OPTICAL DEPTH/THICKNESS > CLOUD MICROPHYSICS
ATMOSPHERIC EMITTED RADIATION
ATMOSPHERIC WATER VAPOR
AEROSOLS
INCOMING SOLAR RADIATION
LONGWAVE RADIATION
ATMOSPHERIC RADIATION
TOTAL PRECIPITABLE WATER > WATER VAPOR INDICATORS
CLOUD DROPLET CONCENTRATION/SIZE > CLOUD MICROPHYSICS
CLOUD TOP TEMPERATURE > CLOUD PROPERTIES
ALBEDO
CLOUD TOP HEIGHT > CLOUD PROPERTIES
CLOUD TOP PRESSURE > CLOUD PROPERTIES
SURFACE TEMPERATURE
CLOUD FRACTION > CLOUD PROPERTIES
SOLAR IRRADIANCE
CLOUD PROPERTIES
CLOUD LIQUID WATER/ICE > CLOUD MICROPHYSICS
CLOUD BASE TEMPERATURE > CLOUD PROPERTIES
VEGETATION
OUTGOING LONGWAVE RADIATION
ATMOSPHERIC PRESSURE
SURFACE PRESSURE
SHORTWAVE RADIATION
AEROSOL OPTICAL DEPTH/THICKNESS
NET RADIATION
CLOUD EMISSIVITY > CLOUD RADIATIVE TRANSFER
CLOUD RADIATIVE TRANSFER
RADIATIVE FLUX
PHOTOSYNTHETICALLY ACTIVE RADIATION
SKIN TEMPERATURE > SURFACE TEMPERATURE
ATMOSPHERIC TEMPERATURE
WATER VAPOR INDICATORS
CLOUD HEIGHT > CLOUD PROPERTIES
CLOUDS
CLOUD BASE PRESSURE > CLOUD PROPERTIES

Atmosphere Incoming Shortwave (SW) Entropy
Atmosphere Outgoing Longwave (LW) Entropy
Clear-Sky Fluxes
Cloud Effective Height
Cloud Effective Pressure
Cloud Effective Temperature
Cloud Infrared Emissivity
Cloud Particle Phase
Cloud Vertical Aspect Ratio
Column Ozone
In-Atmospheric Fluxes
Photosynthetically Active Radiation (PAR) Fluxes
Shortwave (SW) Diffused Fluxes
Shortwave (SW) Direct Fluxes
Surface Downward Longwave (LW) Entropy
Surface Fluxes
Surface Shortwave (SW) Incoming Entropy
Surface Upward Longwave (LW) Entropy
TOA (Top of Atmosphere) Flux
TOA (Top of Atmosphere) Incoming Shortwave (SW) Entropy
TOA (Top of Atmosphere) Outgoing Longwave (LW) Entropy
Total-Sky Fluxes
Window (Wn) Region Flux

Data Distribution

File Format(s):

HDF4

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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 TROPOSPHERE

Temporal Information

Temporal Coverage: 2022-04-01 - 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

VIIRS

Visible-Infrared Imager-Radiometer Suite

Terra

Earth Observing System, Terra (AM-1)

CERES-FM1

Clouds and the Earth's Radiant Energy System - Flight Model 1

Total Detector Shortwave Detector Window Detector

CERES-FM2

Clouds and the Earth's Radiant Energy System - Flight Model 2

Total Detector Shortwave Detector Window Detector

CERES SCANNER

Clouds and the Earth's Radiant Energy System Scanner

MODIS

Moderate-Resolution Imaging Spectroradiometer

GEOSTATIONARY SATELLITES

IMAGING RADIOMETERS

Metadata Dates

Created on 2022-12-22

Last updated on 2024-02-12

CERES Level 3

Entry Title: CERES and GEO-Enhanced TOA, Within-Atmosphere and Surface Fluxes, Clouds and Aerosols Monthly Terra-NOAA20 Edition4A

Entry ID: CER_SYN1deg-Month_Terra-NOAA20_Edition4A

Aerosols Clouds Radiation Budget

DOI

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Keywords

From GCMD Science Keywords:

Data Distribution

File Format(s):

Spatial Information

Locations

Temporal Information

Platforms

Earth Observation Satellites

Joint Polar Satellite System - 1

CERES-FM6

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

VIIRS

Visible-Infrared Imager-Radiometer Suite

Earth Observing System, Terra (AM-1)

CERES-FM1

Clouds and the Earth's Radiant Energy System - Flight Model 1

CERES-FM2

Clouds and the Earth's Radiant Energy System - Flight Model 2

CERES SCANNER

Clouds and the Earth's Radiant Energy System Scanner

MODIS

Moderate-Resolution Imaging Spectroradiometer

IMAGING RADIOMETERS

IMAGING RADIOMETERS

Metadata Dates