CERES ERBE-like Processing Data Sets
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CERES ERBE-like Processing Data Sets |
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CERES ERBE-like processing is the simplest of the CERES processing focus only on Top-of-Atmophere (TOA) radiation. It uses unsophisticated cloud detection and angular directional models and is consistent with earlier ERBE processing to maintain consistency.
The ERBE-like processing data flow diagram is part of the complete CERES processing and data flow diagram.
| BiDirectional Scans (BDS) | ||||||||||||||||||
The BiDirectional Scans (BDS) product contains 24 hours of instantaneous
Level-1b CERES data for a single scanner instrument. The BDS contains
instantaneous radiance measurements recorded every 0.01-second for views of
space, internal calibration, solar calibration and Earth. It contains all
elevation scan modes which include the normal Earth scan and the short
Earth scan modes and both the fixed and rotating azimuth plane scan modes.
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| ERBE-like Instantaneous TOA Estimates (ES-8) | ||||||||||||||||||
The ERBE-like Instantaneous TOA Estimates (ES-8) product contains 24
hours of instantaneous Clouds and the Earth's Radiant Energy System (CERES)
data for a single scanner instrument. The ES-8 contains filtered radiances
recorded every 0.01-second for the total (TOT), shortwave (SW), and window
(WN) channels and the unfiltered SW, longwave (LW), and WN radiances. The
SW and LW radiances at spacecraft altitude are converted to
Top-of-the-Atmosphere (TOA) fluxes with a scene identification algorithm
and Angular Distribution Models (ADMs) which are "like" those
used for the Earth Radiation Budget Experiment (ERBE). The TOA fluxes,
scene identification, and angular geometry are included on the ES-8.
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| ERBE-like Monthly Geographical Averages (ES-4) | ||||||||||||||||||
The ES-4 is one of the Clouds and the Earth's Radiant Energy System
(CERES) science data archival products generated by the CERES ERBE-like
Subsystem. It is written in HDF and is a monthly product that contains
regional, zonal, and global spatial averages from instantaneous scanner
estimates at the top-of-the Earth's atmosphere which are averaged hourly,
daily, and monthly.
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| ERBE-like Monthly Regional Averages (ES-9) | ||||||||||||||||||
The ERBE-like Monthly Regional Averages (ES-9) product contains a month
of space and time averaged Clouds and the Earth's Radiant Energy System
(CERES) data for a single scanner instrument. The ES-9 is also produced for
combinations of scanner instruments. All instantaneous shortwave and
longwave fluxes at the Top-of-the-Atmosphere (TOA) from the CERES ES-8
product for a month are sorted by 2.5-degree spatial regions, by day
number, and by the local hour of observation. The mean of the instantaneous
fluxes for a given region-day-hour bin is determined and recorded on the
ES-9 along with other flux statistics and scene information. For each
region, the daily average flux is estimated from an algorithm that uses the
available hourly data, scene identification data, and diurnal models. This
algorithm is "like" the algorithm used for the Earth Radiation
Budget Experiment (ERBE). The ES-9 also contains hourly average fluxes for
the month and an overall monthly average for each region. These average
fluxes are given for both clear-sky and total-sky scenes.
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