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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