First ISCCP Regional Experiment (FIRE) Cirrus Phase II University of North Dakota Citation Aircraft Particle Measuring System Probe Data
Entry ID: FIRE_CI2_CITATN_PMS

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Summary
Abstract: 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 systems.

The University of North Dakota owns and operates a Cessna Citation II aircraft (N77ND) for the purpose of atmospheric research. This aircraft type has a number of design and performance characteristics which make it an ideal platform for a wide range of atmospheric studies. A series of structural modifications have been made to the basic airplane. These include the following: pylons under the wing tips for a variety of probes in the undisturbed air flow away from the fuselage; a nose boom for wind measurement; a heated radome to prevent ice accumulation on the nose area; special mounts for upward and downward looking radiometers; side-facing camera mounts for time-lapse cameras; optically-flat glass windows for photography; and an air inlet port for air sampling inside the pressurized cabin. The research instrumentation available on the Citation for the second Cirrus IFO is described below.

The basic instrumentation package measured temperature, dew point temperature, pressure, wind and cloud microphysical characteristic along with aircraft position, altitude and performance parameters. The three-dimensional wind field is derived from measurements of acceleration, pitch, roll and yaw combined with angles of attack and sideslip and indicated airspeed. The aircraft parameters were supplied by an LTN-76 inertial navigation system and a Global Positioning System (GPS). Turbulence intensity can be derived from differential pressure transducers and INS accelerometer outputs.

Cloud microphysical measurements were made with an array of Particle Measuring Systems probes (FSSP, 1D-C,2D-C,1D-P) mounted on the wing-tip pylons. These probes measure concentrations and sizes of particles from one micrometer to several millimeters in diameter. In addition there were probes to measure both liquid water content and icing rate. Several gas and aerosol sampling instruments were available. These include fast response O3 and NO2 monitors, and a condensation nuclei counter.

A forward or side-looking video camera was also used to provide a visual record of flight conditions. The data were sampled at various rate from 1 to 24 sec-1. The sampling is controlled by the on-board computer system which also displayed the data in real time in graphic and alphanumeric formats while recording them on magnetic tape.

Related URL
Link: VIEW RELATED INFORMATION
Description: Access FIRE data and information.


Geographic Coverage
 N: 38.0 S: 33.0  E: -92.0  W: -96.0

Temporal Coverage
Start Date: 1991-11-14
Stop Date: 1991-12-07


Location Keywords
CONTINENT > NORTH AMERICA
GEOGRAPHIC REGION > MID-LATITUDE
VERTICAL LOCATION > BOUNDARY LAYER
VERTICAL LOCATION > TROPOSPHERE
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > KANSAS


Science Keywords
ATMOSPHERE >AEROSOLS >AEROSOL PARTICLE PROPERTIES    [Definition]
ATMOSPHERE >CLOUDS >CLOUD MICROPHYSICS >CLOUD CONDENSATION NUCLEI    [Definition]
ATMOSPHERE >CLOUDS >CLOUD TYPES    [Definition]
ATMOSPHERE >CLOUDS >CLOUD MICROPHYSICS >CLOUD DROPLET CONCENTRATION/SIZE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
CESSNA CITATION II    [Information]


Instrument
Cameras    [Information]
CNC >Condensation Nuclei Counter    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
FIRE >First ISCCP Regional Experiment    [Information]
ISCCP >International Satellite Cloud Climatology Project    [Information]
ESIP >Earth Science Information Partners Program    [Information]
REASON >Research, Education, and Applications Solution Network    [Information]


Keywords
CLOUD MICROPHYSICS
EOSDIS
FSSP PROBE
IDN_NODE GSFC/LARC_DAAC
NORTH DAKOTA CITATION
PARTICLE MEASURING SYSTEM
PMS
PMS 1D-C PROBE
PMS 1D-P PROBE
PMS 2D-C PROBE


Originating Center
LARC_DAAC


Data Center
Atmospheric Science Data Center, Science Directorate, Langley Research Center, NASA    [Information]
Data Center URL: http://eosweb.larc.nasa.gov/
Dataset ID: FIRE_CI2_CITATN_PMS

Data Center Personnel
Name: ASDC USER SERVICES
Phone: 757-864-8656
Email: support-asdc at earthdata.nasa.gov
Contact Address:
NASA Langley Atmospheric Science Data Center
User and Data Services
NASA Langley Research Center
Mail Stop 157D
City: Hampton
Province or State: VA
Postal Code: 23681-2199
Country: USA


Langley Research Center Distributed Active Archive Center, Science Directorate, Langley Research Center, NASA    [Information]
Data Center URL: http://eosweb.larc.nasa.gov/
Dataset ID: FIRE_CI2_CITATN_PMS

Data Center Personnel
Name: ASDC USER SERVICES
Phone: 757-864-8656
Email: support-asdc at earthdata.nasa.gov
Contact Address:
NASA Langley Atmospheric Science Data Center
User and Data Services
NASA Langley Research Center
Mail Stop 157D
City: Hampton
Province or State: VA
Postal Code: 23681-2199
Country: USA


Personnel
MICHAEL POELLOT
Role: INVESTIGATOR
Phone: 701-777-3180
Email: poellot at aero.und.edu
Contact Address:
University Station
City: Grand Forks
Province or State: North Dakota
Postal Code: 58202
Country: USA


ASDC USER SERVICES
Role: DIF AUTHOR
Phone: 757-864-8656
Email: support-asdc at earthdata.nasa.gov
Contact Address:
NASA Langley Atmospheric Science Data Center
User and Data Services
NASA Langley Research Center
Mail Stop 157D
City: Hampton
Province or State: VA
Postal Code: 23681-2199
Country: USA



Creation and Review Dates
Last DIF Revision Date: 2014-04-07

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