CLPX-Ground: ISA Main Meteorological Data  View Catalog Page Entry ID
NSIDC-0172
Summary
This data set contains meteorological observations at ten sites throughout the Small Regional Study Area (SRSA) of the Cold Land Processes Field Experiment (CLPX) in Fraser, Colorado, USA. Nine identical meteorological towers were located close to the center of each Intensive Study Area (ISA). Another meteorological tower was located close to the Local-Scale Observation Site (LSOS) within the Fraser Meso-Cell Study Area (MSA). At each site, measurements were made at 10 m above ground level (air temperature, relative humidity, radiation, leaf wetness, wind speed, and direction); approximately 1 m above maximum anticipated snow depth (air temperature, relative humidity, wind speed, wind direction and, in the North Park MSA only, precipitation); and snow depth, snow surface temperature, snow temperature profile, soil moisture, and soil temperatures. Snow pits were also dug at the meteorological sites, and snow density, temperature, and stratigraphy were recorded. Meteorological observations were recorded at a 10-minute temporal resolution between 20 September 2002 and 1 October 2003, although data were not necessarily continuous throughout this time period for all towers. Meteorological measurements were made to support investigations of spatial and temporal variations in accumulation and ablation of the seasonal snowpack within the study areas.
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.
Geographic Coverage
Spatial Coordinates:
N: 41°
S: 39.5°
E: -105°
W: -107.5°
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Data Set Citation
Dataset Creator: Kelly Elder and A. Goodbody
Dataset Title: CLPX-Ground: ISA Main Meteorological Data
Dataset Release Date: 2004-02-01
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC: National Snow and Ice Data Center
Online Resource: http://nsidc.org/data/nsidc-0172.html
Temporal Coverage
Start Date: 2002-09-20
Stop Date: 2003-10-01
Location Keywords
- CONTINENT NORTH AMERICA
- CONTINENT NORTH AMERICA UNITED STATES OF AMERICA COLORADO
- GEOGRAPHIC REGION NORTHERN HEMISPHERE
Science Keywords
- Atmosphere Atmospheric Pressure Atmospheric Pressure Measurements
- Atmosphere Atmospheric Radiation Longwave Radiation Longwave Incoming Radiation
- Atmosphere Atmospheric Radiation Longwave Radiation Longwave Outgoing Radiation
- Atmosphere Atmospheric Radiation Net Radiation
- Atmosphere Atmospheric Radiation Shortwave Radiation Shortwave Incoming Radiation
- Atmosphere Atmospheric Radiation Shortwave Radiation Shortwave Outgoing Radiation
- Atmosphere Atmospheric Temperature Air Temperature
- Atmosphere Atmospheric Water Vapor Humidity Relative Humidity
- Atmosphere Atmospheric Winds Boundary Layer Winds Average Wind Direction
- Atmosphere Atmospheric Winds Boundary Layer Winds Average Wind Speed
- Atmosphere Atmospheric Winds Boundary Layer Winds Maximum Wind Speed
- Atmosphere Atmospheric Winds Boundary Layer Winds Minimum Wind Speed
- Atmosphere Atmospheric Winds Boundary Layer Winds Standard Deviation Wind Direction
- Atmosphere Precipitation Precipitation Amount
- Cryosphere Frozen Ground Soil Temperature
- Cryosphere Snow/Ice Snow Cover Snow Temperature
- Cryosphere Snow/Ice Snow Density
- Cryosphere Snow/Ice Snow Depth
- Cryosphere Snow/Ice Snow/Ice Chemistry
- Cryosphere Snow/Ice Snow/Ice Temperature
- Cryosphere Snow/Ice Snow Stratigraphy
- Cryosphere Snow/Ice Snow Water Equivalent
- Land Surface Frozen Ground Soil Temperature
- Land Surface Land Temperature Skin Temperature
- Land Surface Soils Soil Moisture/Water Content
- Land Surface Soils Soil Temperature
- Land Surface Topography Surface Roughness
- Terrestrial Hydrosphere Snow/Ice Snow Density
- Terrestrial Hydrosphere Snow/Ice Snow/Ice Chemistry
- Terrestrial Hydrosphere Snow/Ice Snow/Ice Temperature
- Terrestrial Hydrosphere Snow/Ice Snow Stratigraphy
- Terrestrial Hydrosphere Snow/Ice Snow Water Equivalent
Ancillary Keywords
- Air Temperatures
- Atmospheric Pressure
- Incoming Radiation
- Incoming Shortwave Radiation
- Land Surface Temperature
- Longwave Downward Radiation
- Longwave Radiation
- Near-surface Air Temperatures
- Net Radiation
- Precipitation
- Precipitation Amount
- Relative Humidity
- Shortwave Radiation
- Snow Depth
- Snow Surface Temperature
- Snow Temperature
- Soil Moisture
- Soil Temperatures
- Surface Soil Moisture
- Surface Temperature
- Surface Winds
- Ten Meter Temperatures
- Two-Meter Air Temperature
- Wind Direction
- Wind Speed
- Wind Velocity
- Climatology/Meteorology/Atmosphere
Platform
- FIXED OBSERVATION STATIONS
- GROUND-BASED OBSERVATIONS
- GROUND STATIONS
- METEOROLOGICAL STATIONS
Instrument
- HUMIDITY SENSORS
- INFRARED THERMOMETERS
- NET RADIOMETERS
- PRESSURE SENSORS
- RADIOMETERS
- RAIN GAUGES
- SOIL MOISTURE PROBE
- TEMPERATURE LOGGERS
- TEMPERATURE PROBES
- THERMOCOUPLES
- ULTRASONIC DEPTH GAUGE
- WIND VANES
Project
- CLPX Cold Land Processes Field Experiment
Quality
The available data product has been processed to a Level 1 standard. This means that raw data (Level 0 data), which was downloaded on approximately a monthly basis, haveeen concatenated into one continuous file per meteorological tower. Data have then been filtered twice for faulty values. The first filtering process was done manually in order to recognize instrument, wiring, or programming problems. The second filtering process was done computationally to remove blank values or any faulty values that fall outside of acceptable boundaries for each instrument. Faulty data and missing data were replaced with a default value of 8999.
Data that were considered suspect during manual filtering were left in Level 1 files even after they were identified as suspect. This was done when technicians recognized potential inconsistencies but were either unsure of the cause or were unable to verify their assumptions. Rather than alter the dataset without definitive proof of faulty data, data were left for further interpretation and quality control by future investigators. Although we have a high level of confidence in the products that are delivered in this dataset, future investigators should implement their own quality control procedures. A qualitative assessment of potentially faulty data is provided.
Data Set Progress
in work
Data Center
NASA DAAC at the National Snow and Ice Data Center
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@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
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@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: 345 MB
Distribution Format: ASCII Text
Personnel
Kelly Elder
Role: INVESTIGATOR
Phone: 1 970 498 1233
Fax: 1 970 498 1212
Email: kelder@fs.fed.us
Contact Address:
- USFS RMRS
- Rocky Mountain Research Station
- USDA Forest Service
- 240 West Prospect Road
City: Fort Collins
Province or State: CO
Postal Code: 80526
Angus Goodbody
Role: INVESTIGATOR
Phone: 1 970 498 1273
Fax: 1 970 498 1212
Email: goodbody@lamar.colostate.edu
Contact Address:
- USFS RMRS
- USFS Rocky Mountain Research Station
- USDA Forest Service
- 240 West Prospect Rd
City: Fort Collins
Province or State: CO
Postal Code: 80526
Country: USA
Nick Rutter
Role: INVESTIGATOR
Phone: 1 952 361 6610 x230
Fax: 1 952 361 6634
Email: nrutter@nohrsc.nws.gov
Contact Address:
- NOHRSC
- 1735 Lake Drive West
City: Chanhassen
Province or State: MN
Postal Code: 55317
Country: USA
NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@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
Related URL
VIEW PROJECT HOME PAGE
CLPX Site
VIEW PROJECT HOME PAGE
CLPX Snow Pits
VIEW PROJECT HOME PAGE
Register as a CLPX user
Metadata Name and Version
Metadata Name: CEOS IDN DIF
Metadata Version: 9.7
Creation and Review Dates
DIF Creation Date: 2004-02-01
Last DIF Revision Date: 2006-07-31
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