[Parameters: Topic='CRYOSPHERE', Term='SNOW/ICE', Variable_Level_1='SNOW MELT']
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CLPX-Ground: Ground Based Passive Microwave Radiometer (GBMR-7) Data Entry ID: NSIDC-0165 |
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Summary
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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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Geographic Coverage
| N: 39.95 | S: 39.95 | E: -105.9 | W: -105.9 |
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Data Set Citation
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Dataset Originator/Creator:
Tobias Graf
Dataset Title: CLPX-Ground: Ground Based Passive Microwave Radiometer (GBMR-7) Data Dataset Release Date: 2003-10-13 Dataset Release Place: Boulder, CO, USA Dataset Publisher: National Snow and Ice Data Center (NSIDC) Online Resource: http://nsidc.org/data/nsidc-0165.html |
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
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CONTINENT
> NORTH AMERICA
> UNITED STATES OF AMERICA
CONTINENT > NORTH AMERICA GEOGRAPHIC REGION > NORTHERN HEMISPHERE |
Data Resolution
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Latitude Resolution:
39.95 N
Longitude Resolution: 105.9 W |
Science Keywords
| ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE [Definition] |
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY [Definition] |
| ATMOSPHERE >ATMOSPHERIC WINDS >SURFACE WINDS [Definition] |
| ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT [Definition] |
| ATMOSPHERE >PRECIPITATION >SNOW [Definition] |
| ATMOSPHERE >ATMOSPHERIC RADIATION >INCOMING SOLAR RADIATION [Definition] |
| ATMOSPHERE >ATMOSPHERIC RADIATION >LONGWAVE RADIATION [Definition] |
| ATMOSPHERE >ATMOSPHERIC RADIATION >SHORTWAVE RADIATION [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW COVER [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW DENSITY [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW DEPTH [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW MELT [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW WATER EQUIVALENT [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW/ICE TEMPERATURE [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW COVER [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW DENSITY [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW DEPTH [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW MELT [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW WATER EQUIVALENT [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW/ICE TEMPERATURE [Definition] |
| LAND SURFACE >SOILS >SOIL MOISTURE/WATER CONTENT [Definition] |
| SPECTRAL/ENGINEERING >MICROWAVE >BRIGHTNESS TEMPERATURE [Definition] |
| CRYOSPHERE >SNOW/ICE >SNOW STRATIGRAPHY [Definition] |
| TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW STRATIGRAPHY [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION IMAGERY/BASE MAPS/EARTH COVER INLAND WATERS |
Platform
| GROUND-BASED OBSERVATIONS [Information] |
Instrument
| MSR >Microwave Scanning Radiometer [Information] |
Project
| EOSDIS >Earth Observing System Data Information System [Information] |
| ESIP >Earth Science Information Partners Program [Information] |
| CLPX >Cold Land Processes Field Experiment [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 |
| Snow Pits |
| Snow Properties |
| Snow Surface Temperature |
| Snowpack |
| Wind Direction |
| Wind Speed |
Data Set Progress
| IN WORK |
Data Center
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NSIDC Distributed Active Archive Center
[Information]
Data Center URL: http://nsidc.org/daac/index.html Dataset ID: NSIDC-0165
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National Snow and Ice Data Center
[Information]
Data Center URL: http://nsidc.org Dataset ID: NSIDC-0165
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Distribution
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Distribution_Media:
FTP
Distribution_Format: ASCII and png |
Personnel
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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 |
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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 |
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HIDEYUKI
FUJII Role: INVESTIGATOR |
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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 |
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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 |
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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 |
Creation and Review Dates
DIF Creation Date:
2003-04-18
Last DIF Revision Date:
2003-05-09
Future DIF Review Date:
2004-05-09
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