CLPX-Ground: Ground Based Passive Microwave Radiometer (GBMR-7) Data
Entry ID: NSIDC-0165

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Summary
Abstract: This data set contains brightness temperature observations of the snow cover at the Local Scale Observation Site (LSOS) of the Cold Land Processes Field Experiment (CLPX) in Fraser, Colorado, USA. Measurements were taken at 18.7, 23.8, 36.5, and 89 GHz (vertical/horizontal polarization) using a ground-based passive microwave radiometer (GBMR-7). Three different measurement techniques were used: 1) scans of undisturbed total snow cover, 2) angular scans with varying incidence angles (30 to 70 degrees), and 3) scans of bare soil and new snow accumulation. In addition to observed snow brightness temperatures, the data set includes snow pit characteristics (density, snow temperature, stratigraphy, snow crystal size, soil moisture) and meteorological forcing data observations (wind speed, wind direction, air temperature, relative humidity, downward long-wave radiation, downward short-wave radiation and precipitation). Snow cover brightness measurements were made 19-21 January 2002, 10-13 December 2002, 18-26 February 2003 and 25 March 2003. Snow pit and meteorological measurements were made between 1 October 2002 and 29 March 2003. The NASA CLPX is a multi-sensor, multi-scale experiment that focuses on extending a local-scale understanding of water fluxes, storage, and transformations to regional and global scales. Within a framework of nested study areas in the central Rocky Mountains of the western United States, ranging from 1-ha to 160,000 km2, intensive ground, airborne, and spaceborne observations are collected. Data collection focuses on two seasons: mid-winter, when conditions are generally frozen and dry, and early spring, a transitional period when both frozen and thawed, dry and wet conditions are widespread.

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Link: VIEW PROJECT HOME PAGE
Description: CLPX Site


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Description: Register as a CLPX user


Geographic Coverage
 N: 39.95 S: 39.95  E: -105.9  W: -105.9

Data Set Citation
Dataset Originator/Creator: Graf, T., T. Koike, H. Fujii, M. Brodzik, and R. Armstrong.
Dataset Title: CLPX-Ground: Ground Based Passive Microwave Radiometer (GBMR-7) Data
Dataset Release Date: 2003-10-13
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Version: 1
Online Resource: http://nsidc.org/data/NSIDC-0165


Temporal Coverage
Start Date: 2002-01-19
Stop Date: 2002-01-21

Start Date: 2002-10-01
Stop Date: 2003-03-29

Start Date: 2002-12-10
Stop Date: 2002-12-13

Start Date: 2003-02-18
Stop Date: 2003-02-26

Start Date: 2003-03-25
Stop Date: 2003-03-25


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
CONTINENT > NORTH AMERICA
GEOGRAPHIC REGION > NORTHERN HEMISPHERE


Science Keywords
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE    [Definition]
SPECTRAL/ENGINEERING >MICROWAVE >BRIGHTNESS TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >INCOMING SOLAR RADIATION    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >LONGWAVE RADIATION    [Definition]
ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT    [Definition]
ATMOSPHERE >ATMOSPHERIC RADIATION >SHORTWAVE RADIATION    [Definition]
ATMOSPHERE >PRECIPITATION >SNOW    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW COVER    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW COVER    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW DENSITY    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW DENSITY    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW DEPTH    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW DEPTH    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW/ICE TEMPERATURE    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW/ICE TEMPERATURE    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW MELT    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW MELT    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW STRATIGRAPHY    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW STRATIGRAPHY    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW WATER EQUIVALENT    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW WATER EQUIVALENT    [Definition]
LAND SURFACE >SOILS >SOIL MOISTURE/WATER CONTENT    [Definition]
ATMOSPHERE >ATMOSPHERIC WINDS >SURFACE WINDS    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
IMAGERY/BASE MAPS/EARTH COVER
INLAND WATERS
GEOSCIENTIFIC INFORMATION


Platform
GROUND-BASED OBSERVATIONS    [Information]


Instrument
MSR >Microwave Scanning Radiometer    [Information]


Project
CLPX >Cold Land Processes Field Experiment    [Information]
ESIP >Earth Science Information Partners Program    [Information]
EOSDIS >Earth Observing System Data Information System    [Information]


Quality
Data has undergone QC.


Access Constraints
Accessible only by CLPX approved investigators until October 2004.


Keywords
Air Temperature
Incoming Shortwave Radiation
Longwave Downward Radiation
Near-surface Air Temperatures
Passive Microwave
Passive Microwave Brightness Temperatures
Passive Microwave Data
Passive Microwave Radiation
Precipitation
Precipitation Amount
Relative Humidity
Scanning Multichannel Microwave Radiometer
Snow Depth
snow grain size
Snowpack
Snow Pits
Snow Properties
Snow Surface Temperature
Wind Direction
Wind Speed


Data Set Progress
IN WORK


Data Center
NSIDC Distributed Active Archive Center    [Information]
Data Center URL: http://nsidc.org/daac/index.html

Data Center Personnel
Name: NSIDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


National Snow and Ice Data Center    [Information]
Data Center URL: http://nsidc.org

Data Center Personnel
Name: NSIDC USER SERVICES
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA



Distribution
Distribution_Media: FTP
Distribution_Size: 5 KB
Distribution_Format: PNG

Distribution_Media: FTP
Distribution_Size: 1 - 3789 KB
Distribution_Format: ASCII Text (.txt)

Distribution_Media: FTP
Distribution_Size: 43 - 453 KB
Distribution_Format: Joint Photographic Expert Group (JPEG) (.jpg)


Personnel
TOBIAS GRAF
Role: INVESTIGATOR
Phone: +81 (0)3 5841 6107
Fax: +81 (0)3 5481 6130
Email: tgraf at hydra.t.u-tokyo.ac.jp
Contact Address:
Department of Civil Engineering, River & Environmental Engineering
Laboratory 7-3-1,
University of Tokyo
Hongo, Bunkyo-ku
City: Tokyo
Postal Code: 113-8656
Country: JAPAN


TOSHIO KOIKE
Role: INVESTIGATOR
Phone: +81-3-8541-6106
Fax: +81-3-8541-6130
Email: tkoike at hydra.t.u-tokyo.ac.jp
Contact Address:
7-3-1, Hongo
City: Bunkyo-ku
Province or State: Tokyo
Postal Code: 113-8656
Country: Japan


HIDEYUKI FUJII
Role: INVESTIGATOR


MARY J. BRODZIK
Role: INVESTIGATOR
Email: brodzik at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


RICHARD ARMSTRONG
Role: INVESTIGATOR
Phone: +1 (303)-492-6199
Fax: +1 (303)-492-2468
Email: rlax at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES 449 UCB
University of Colorado
City: Boulder
Province or State: Colorado
Postal Code: 80309-0449
Country: USA


NSIDC USER SERVICES
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


Publications/References
Kazama, S, T. Rose, and R. Zimmerman.1999. 'A Precision Autocalibrating 7ch Radiometer for Environmental Research Applications' Journal of The Remote Sensing Society of Japan, Vol. 19, No. 3, pp. 37-45.

Creation and Review Dates
DIF Creation Date: 2003-10-13
Last DIF Revision Date: 2014-07-07

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