First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) Langley DAAC Data Set Document
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First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) Langley DAAC Data Set Document |
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The First ISCCP Regional Experiments 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.
All data sets discussed in this document were produced by Colorado State University (CSU). These data sets are:
| FIRE_CI2_CSU_PRT6: | First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) PRT-6 Data (FIRE_CI2_CSU_PRT6) |
| FIRE_CI2_CSU_SONDES: | First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) Rawinsonde Data (FIRE_CI2_CSU_SONDES) |
| FIRE_CI2_CSU_STN1: | First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) Station 1 Data (FIRE_CI2_CSU_STN1) |
| FIRE_CI2_CSU_STN2: | First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) Station 2 Data (FIRE_CI2_CSU_STN2) |
| FIRE_CI2_CSU_WNDPRFS: | First ISCCP Regional Experiment (FIRE) Cirrus 2 Colorado State University (CSU) Wind Profiler Data (FIRE_CI2_CSU_WNDPRFS) |
FIRE_CI2_CSU_PRT6
The Colorado State radiometer data set was produced by the Department of
Atmospheric Sciences of CSU as part of the FIRE 2 Cirrus Intensive Field
Observations (IFO) conducted in Coffeyville, Kansas. The CSU PRT-6 data were
collected during the period from Nov. 18, 1991 (day 322) to Dec. 7, 1991 (day
341) at the Parsons KG&E Power Plant, Parsons, Kansas (37 deg. 18 min. N
and 95 deg. 07 min.W). The PRT-6 is an all-purpose chopped bolometer. It was
operated with a 2 degree field of view pointing vertically upward. The filter
employed narrowed the spectral band to ranges from about 885 to 945 inverse
centimeters (the infrared window region). The PRT-6 was not run in continuous
mode. When operating, data were sampled every 5 seconds. Please note that there
are temporal gaps in the data.
FIRE_CI2_CSU_SONDES
The CSU sonde data were generated in support of the FIRE 2 Cirrus observation
field experiment held in Coffeyville, Kansas during the period from 13 Nov. to
06 Dec. 1991 at the Parsons KG&E Power Plant. The data were collected at 37
deg. 18 min. N and 95 deg. 07 min. W, with a vertical resolution usually of
roughly 5-10 m. They were provided to allow a calculation of an approximate
location of the sonde.
FIRE_CI2_CSU_STN1
The CSU Station 1 surface radiation data set was produced by the Atmospheric
Sciences Division of CSU in support of the FIRE 2 Cirrus IFO conducted in
Coffeyville, Kansas. CSU Station 1 point data were collected every 2 minutes
for the period from Nov. 11, 1991 (day 315) to Dec. 8, 1991 (day 342) at the
Parsons KG&E Power Plant Parsons, Kansas (37 deg. 18 min. N and 95 deg. 07
min. W). NOTE: The 2 minute values were instantaneous readings.
FIRE_CI2_CSU_STN2
The CSU Station 2 surface radiation data set was collected every 2 minutes for
the period from Nov. 13, 1991 through Dec. 8, 1991 at the Tri-City Airport,
Parsons, Kansas (37 deg. 20 min. N, 95 deg. 30 min. 30 sec. W.) NOTE: the 2
minute values were instantaneous readings.
FIRE_CI2_CSU_WNDPRFS
The CSU wind profiler data set was produced by the Department of Atmospheric
Sciences of CSU as part of the FIRE 2 Cirrus Intensive Field Observations
(IFO) conducted in Coffeyville, Kansas. The CSU wind profiler data were
collected during the period from Nov. 12, 1991 to Dec. 7, 1991 at the Parsons
KG&E Power Plant, Parsons, Kansas (37 deg. 18 min. N and 95 deg. 07 min.
W).
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First ISCCP Regional Experiment (FIRE)
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| FIRE_CI2_CSU_PRT6 | GROUND STATION |
| FIRE_CI2_CSU_SONDES | GROUND STATION |
| FIRE_CI2_CSU_STN1 | GROUND STATION |
| FIRE_CI2_CSU_STN2 | GROUND STATION |
| FIRE_CI2_CSU_WNDPRFS | GROUND STATION |
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| FIRE_CI2_CSU_PRT6 | Brightness Temperature |
| FIRE_CI2_CSU_SONDES | Geopotential Height Humidity Pressure Temperature |
| FIRE_CI2_CSU_STN1 | Humidity Irradiance Temperature Wind Direction Wind Speed |
| FIRE_CI2_CSU_STN2 | Humidity Irradiance Temperature Wind Direction Wind Speed |
| FIRE_CI2_CSU_WNDPRFS | Ground Height Wind Speed |
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| FIRE_CI2_CSU_PRT6 | PRT-6 |
| FIRE_CI2_CSU_SONDES | RAWINSONDE |
| FIRE_CI2_CSU_STN1 | 207 PROBE PYRANOMETER PYRGEOMETER PYRHELIOMETER WIND SENSOR |
| FIRE_CI2_CSU_STN2 | 207 PROBE PYRANOMETER PYRGEOMETER WIND SENSOR |
| FIRE_CI2_CSU_WNDPRFS | WIND PROFILER |
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| Data Set Name |
Min Lat |
Max Lat |
Min Lon |
Max Lon |
|---|---|---|---|---|
| FIRE_CI2_CSU_PRT6 | 37.18 | 37.18 | -95.07 | -95.07 |
| FIRE_CI2_CSU_SONDES | 37.06 | 37.06 | -95.07 | -95.07 |
| FIRE_CI2_CSU_STN1 | 37.18 | 37.18 | -95.07 | -95.07 |
| FIRE_CI2_CSU_STN2 | 37.33 | 37.33 | -95.50 | -95.50 |
| FIRE_CI2_CSU_WNDPRFS | 37.18 | 37.18 | -95.07 | -95.07 |
There are no maps available for these data sets.
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| Data Set Name |
Begin Date |
End Date |
|---|---|---|
| FIRE_CI2_CSU_PRT6 | 11-18-1991 | 12-07-1991 |
| FIRE_CI2_CSU_SONDES | 11-13-1991 | 12-06-1991 |
| FIRE_CI2_CSU_STN1 | 11-11-1991 | 12-08-1991 |
| FIRE_CI2_CSU_STN2 | 11-13-1991 | 12-08-1991 |
| FIRE_CI2_CSU_WNDPRFS | 11-12-1991 | 12-07-1991 |
There are no maps available for these data sets.
CSU sondes data set includes 16 granules. Each is named ci2_par_yymmdd. Each granule has one or multiple ASCII data files with the name "yymmdd.hhMM", where yy is the year, mm the month (only 11 and 12 are valid), dd the day, and hhMM the hour and minute when the data were collected. Data points with values of -9999 are considered bad.
There are four variables in a record; variables are separated by white space(s). These variables with units and estimated precision (in units) are listed in order below.
| MVariable Name | Precision | Min | Max |
|---|---|---|---|
| julian day (UTC) | 0.0001157 | 1 | 365 |
| hour-minute (UTC) | 1 | 0 | 2359 |
| second (UTC) | 0.1 | 0 | 59.9 |
| equivalent brightness temperature (K) | 1 | 150 | 300 |
| Variable Name | Precision | Min | Max |
|---|---|---|---|
| julian day (UTC) | 0.0001157 | 1 | 365 |
| hour (UTC) | 1 | 0 | 23 |
| minute (UTC) | 1 | 0 | 59 |
| second (UTC) | 0.01 | 0 | 59.99 |
| geopotential height (km) | 0.01 | 0 | 50 |
| pressure (mb) | 1 | 5 | 1050 |
| temperature (K) | 0.5 | 183 | 323 |
| relative humidity () | 3 | 5 | 100 |
| azimuth angle (deg) | 0.5 | 0 | 360 |
| elevation angle (deg) | 0.5 | -90 | 90 |
FIRE_CI2_CSU_STN1
A total of 19 variables in a record; variables are separated by white
space(s). These variables with units and estimated precision (in units) are
listed in order below.
| Variable Name | Precision | Min | Max |
|---|---|---|---|
| time (fraction of julian day, UTC) | 0.0001157 | 1 | 365 |
| wind speed (m/s) | 0.5 | 0 | 100 |
| wind direction (degrees) | 5.0 | 0 | 360 |
| temperature (C) | 0.2 | -40 | 40 |
| relative humidity () | 5.0 | 0 | 100 |
| solar total irradiance (W/m2) | 5.0 | 0 | 1500 |
| near infrared irradiance (W/m2) | 5.0 | 0 | 1500 |
| infrared irradiance (W/m2) | 5.0 | 0 | 600 |
| dome temperature (K) | 0.2 | 233 | 313 |
| sink temperature (K) | 0.2 | 233 | 313 |
| direct solar - yellow filter (W/m2) [20 sec] | 5.0 | 0 | 1500 |
| direct solar - red filter (W/m2) [43 sec] | 5.0 | 0 | 1500 |
| direct solar - dark red filter (W/m2) [67 sec] | 5.0 | 0 | 1500 |
| direct solar - no filter (W/m2) [90 sec] | 5.0 | 0 | 1500 |
| direct solar - no filter (W/m2) [20 sec] | 5.0 | 0 | 1500 |
| direct solar - no filter (W/m2) [43 sec] | 5.0 | 0 | 1500 |
| direct solar - no filter (W/m2) [67 sec] | 5.0 | 0 | 1500 |
| direct solar - no filter (W/m2) [90 sec] | 5.0 | 0 | 1500 |
| hour-minute (hhmm UTC) | 0.16667 | 0 | 240 |
NOTE: Variables 14 and 18 have the same name. The data producer explained as follows: There were two pyrheliometers tracking the sun; one had a filter wheel and the other did not. The two identical variables are different because they come from 2 different pyrheliometers though they are measuring the same thing at the same time. The second variable is the non-filtered pyrheliometer.
FIRE_CI2_CSU_STN2
A total of 11 variables in a record; variables are separated by white
space(s). These variables with units and estimated precision (in units) are
listed in order below.
| Variable Name | Precision | Min | Max |
|---|---|---|---|
| time (fraction of julian day, UTC) | 0.0001157 | 0 | 367 |
| wind speed (m/s) | 0.5 | 0 | 100 |
| wind direction (degrees) | 5.0 | 0 | 360 |
| temperature (C) | 0.2 | -40 | 40 |
| relative humidity () | 5.0 | 0 | 100 |
| solar total irradiance (W/m2) | 5.0 | 0 | 1500 |
| near infrared irradiance (W/m2) | 5.0 | 0 | 1500 |
| infrared irradiance (W/m2) | 5.0 | 0 | 600 |
| dome temperature (K) | 0.2 | 233 | 313 |
| sink temperature (K) | 0.2 | 233 | 313 |
| hour-minute (hhmm UTC) | 0.16667 | 0 | 2400 |
FIRE_CI2_CSU_WINDPRFS
There are four variables in the data; variables are separated by white
spaces. The Fortran format for the data variables is: (I2,F7.3,2F10.3).
These variables with units and estimated precision (in units) are listed in
order below.
| Variable Name | Precision | Min | Max |
|---|---|---|---|
| minute | 1 | 0 | 59 |
| height (km above MSL) | n/a | n/a | n/a |
| u-wind (m/s) | n/a | n/a | n/a |
| v-wind (m/s) | n/a | n/a | n/a |
See above.
See above.
See above.
See above.
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A general description of data granularity as it applies to the IMS appears in the EOSDIS Glossary.
All data are in ASCII format.
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There are no graphs or plots available for these browse images.
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There are no plans for future modifications of these data sets.
There are sample read software available for these data sets.
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 Langley DAAC Information Management System (IMS) is an on-line system that features a graphical user interface (GUI) that allows to query the Langley DAAC data set holdings, to view pre-generated browse products, and to order specific data products. Users may also request data by letter, telephone, electronic mail (INTERNET), or personal visit.
The Langley DAAC User and Data Services (UDS) staff provides technical and operational support for users ordering data. The Langley DAAC Handbook is available in a postscript file through the IMS for users who want detailed information about the Langley DAAC holdings. Users may also obtain a copy by contacting:
Langley DAAC User and Data Services OfficeThe Langley DAAC will continue to archive this data. There are no plans to reprocess.
There are no output products available at this time.
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