First ISCCP Regional Experiment (FIRE) Cirrus 1 Surface Radiation Budget (SRB) Langley DAAC Data Set Document
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First ISCCP Regional Experiment (FIRE) Cirrus 1 Surface Radiation Budget (SRB) Langley DAAC Data Set Document |
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The First ISCCP Regional Experiments (FIRE) have been designed to improve data products and cloud/radiation parameterizations used in general circulation models (GCMs). Specifically, the goals of FIRE are (1) to improve basic understanding of the interaction of physical processes in determining life cycles of cirrus and marine stratocumulus systems and the radiative properties of these clouds during their life cycles and (2) to investigate the interrelationships between the ISCCP data, GCM parameterizations, and higher space and time resolution cloud data.
To-date, four intensive field-observation periods were planned and executed: a cirrus IFO (October 13-November 2, 1986); a marine stratocumulus IFO off the southwestern coast of California (June 29-July 20, 1987) a second cirrus IFO in southeastern Kansas (November 13-December 7, 1991); and a second marine stratocumulus IFO in the eastern North Atlantic Ocean (June 1-June 28, 1992). Each mission combined coordinated satellite, airborne, and surface observations with modeling studies to investigate the cloud properties and physical processes of the cloud system.
This document provides information for the following data sets.
| FIRE_CI1_SRB_ALASKA: | First ISCCP Regional Experiment (FIRE) Cirrus 1 Surface Radiation Budget (SRB) Alaska Data (FIRE_CI1_SRB_ALASKA) |
| FIRE_CI1_SRB_CANADA: | First ISCCP Regional Experiment (FIRE) Cirrus 1 Surface Radiation Budget (SRB) Canada Data (FIRE_CI1_SRB_CANADA) |
| FIRE_CI1_SRB_SO_POLE: | First ISCCP Regional Experiment (FIRE) Cirrus 1 Surface Radiation Budget (SRB) South Pole Data (FIRE_CI1_SRB_SO_POL) |
| FIRE_CI1_SRB_SWITZ: | First ISCCP Regional Experiment (FIRE) Cirrus 1 Surface Radiation Budget (SRB) Switzerland Data (FIRE_CI1_SRB_SWITZ) |
Project FIRE (First ISCCP Regional Experiment) is a U.S. cloud climatology research program to validate and improve ISCCP (International Satellite Cloud Climatology Project) data products and cloud/radiation parameterizations used in general circulation models (GCMs).
The primary emphasis of FIRE is the study of marine stratocumulus and cirrus cloud systems. These two cloud types were selected because of their recognized importance for global climate and their scientific appeal for many members of the scientific community.
The objective of FIRE is to investigate the cloud properties and physical processes of the cloud systems using combined and coordinated satellite, airborne, and surface observations with modeling studies.
The goals of FIRE are (1) to improve the basic understanding of the interaction of physical processes in determining life cycles of cirrus and marine stratocumulus systems and the radiative properties of these clouds during their life cycles and (2) to investigate the interrelationships between the ISCCP data, GCM parameterizations, and higher space and time resolution cloud data.
FIRE_CI1_SRB_ALASKA : Radiance
FIRE_CI1_SRB_CANADA : Radiance
FIRE_CI1_SRB_SO_POLE : Radiance
FIRE_CI1_SRB_SWITZ : Radiance
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Dr. William B. Rossow
NASA Goddard Space Flight Center
First ISCCP Regional Experiments (FIRE)
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FIRE_CI1_SRB_ALASKA : NOAA-9
FIRE_CI1_SRB_CANADA : NOAA-9
FIRE_CI1_SRB_SO_POLE : NOAA-9
FIRE_CI1_SRB_SWITZ : NOAA-9
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FIRE_CI1_SRB_ALASKA : Radiance
FIRE_CI1_SRB_CANADA : Radiance
FIRE_CI1_SRB_SO_POLE : Radiance
FIRE_CI1_SRB_SWITZ : Radiance
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FIRE_CI1_SRB_ALASKA : AVHRR
FIRE_CI1_SRB_CANADA : AVHRR
FIRE_CI1_SRB_SO_POLE : AVHRR
FIRE_CI1_SRB_SWITZ : AVHRR
Radiances normalized to NOAA-9 AVHRR, which in turn is normalized to NOAA-7 AVHRR as part of ISCCP calibration monitoring. Absolute visible calibration is then obtained from a combination of ISCCP normalization and an absolute calibration from NASA ER-2 flights under NOAA-9.
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Questions about instrumentation and specific data parameters (including their derivation utilization and units) should be directed to Goddard Institute of Space Studies (GISS). There are small discrepancies pertaining to the SRB data set. Some of the values from data files and ancillary files were out of range when compared against the ranges provided by the VTOC, and the maximum and minimum values from the Header files. The data producers response to these discrepancies was "What is in VTOC is the definition of the region, what is in the Ancillary files is a subset of scan lines falling in that region. A given scan line may have some pixels with lat/lon outside the region."
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| Data Set Name |
Min Lat |
Max Lat |
Min Lon |
Max Lon |
|---|---|---|---|---|
| FIRE_CI1_SRB_ALASKA | 55.00 | 90.00 | -175.00 | -135.00 |
| FIRE_CI1_SRB_CANADA | 40.00 | 90.00 | -110.00 | -70.00 |
| FIRE_CI1_SRB_SO_POLE | -90.00 | -55.00 | -180.00 | 180.00 |
| FIRE_CI1_SRB_SWITZ | 30.00 | 55.00 | -40.00 | 40.00 |
There are no maps available for this data set.
FIRE_CI1_SRB_ALASKA : Equal-area grid
FIRE_CI1_SRB_CANADA : Equal-area grid
FIRE_CI1_SRB_SO_POLE : 30 KM
FIRE_CI1_SRB_SWITZ : Equal-area grid
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| Data Set Name |
Begin Date |
End Date |
|---|---|---|
| FIRE_CI1_SRB_ALASKA | 09-30-1986 | 10-31-1986 |
| FIRE_CI1_SRB_CANADA | 09-30-1986 | 10-31-1986 |
| FIRE_CI1_SRB_SO_POLE | 09-30-1986 | 10-31-1986 |
| FIRE_CI1_SRB_SWITZ | 09-30-1986 | 10-31-1986 |
There are no maps available for this data set.
FIRE_CI1_SRB_ALASKA : 3 Hour
FIRE_CI1_SRB_CANADA : 3 Hour
FIRE_CI1_SRB_SO_POLE : 6 Hour
FIRE_CI1_SRB_SWITZ : 6 Hour
Each of the observation data files in FIRE Cirrus I SRB contains 24
variables. Each variable has been defined as a one byte unsigned integer.
Two variables (Lat/Lon) are stored in each ancillary data files each in
INTEGER*2 format. In order to scale the data so they are 1-byte, 2-byte, or
4-bytes positive integers the following equation is used:
Q = (R - A) * (2**(b - N))
where R is the actual (real) data value, b-7 for 1 byte integers, b=15 for 2
byte integers, and b=31 for 4 byte integers and Q is rounded to a positive
integer. All records and parameters within each record have been defined
including their minimum and maximum values in the header file filename.001.
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A general description of data granularity as it applies to the IMS appears in the EOSDIS Glossary.
The data are written in Modified Standard Data Format.
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Images are not available for this data set.
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The Langley DAAC performs an inspection process on this data received by the data producer via ftp. The DAAC checks to see if the transfer of the data completed and were delivered in their entirety. An inspection software was developed by the DAAC to see if the code was able to read every granule. The code also checks to see if every parameter of data falls within the ranges which are included in the granule. This same code extracts the metadata required for ingesting the data into the IMS. If any discrepancies are found, the data producer is contacted. The discrepancies are corrected before the data are archived at the DAAC.
Questions about instruments and specific data parameters (including their derivation utilization and units) should be directed to Goddard Institute of Space Studies (GISS). There are small discrepancies pertaining to the SRB data set. Some of the data values from data files and ancillary files were out of range when compared against the ranges provided by the VTOC, and the maximum and minimum values from the Header files. The data producers response to these discrepancies was "What is in VTOC is the definition of the region, what is in the Ancillary files is a subset of scan lines falling in that region. A given scan line may have some pixels with lat/lon outside the region."
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There are no plans for future modifications of these data sets.
Sample read software are available.
The software can be obtained through the Langley DAAC. Please refer to the contact information below. The software can also be obtained at the same time the user is ordering these data sets.
The data are available from the Langley Data Center web site.
The Langley DAAC will continue to archive this data. There are no plans to reprocess.
There are no output products available at this time for this data set.
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