Data Set ID: 
CL07ST

CLASIC07 Soil Texture Data, Version 1

This data set contains soil texture data obtained for the Cloud and Land Surface Interaction Campaign 2007 (CLASIC07). The original data were extracted from a multi-layer soil characteristics database for the conterminous United States called CONUS-Soil and generated for the regional study area. Data are representative of the conditions present in the regional study area during the general timeline of the CLASIC07 campaign.

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Parameter(s):
  • Soils > Soil Texture > Clay Fraction Analysis
  • Soils > Soil Texture > Percent clay
  • Soils > Soil Texture > Sand Fraction
Spatial Coverage:
  • N: 36, S: 34.7, E: -96.05, W: -98.8

Spatial Resolution:
  • 30 arcsec x 30 arcsec
Temporal Coverage:
  • 1 July 2007 to 31 July 2007
Temporal Resolution: Varies
Data Format(s):
  • Binary
Platform(s) Models/Analyses
Sensor(s): CONUS-Soil
Version: V1
Data Contributor(s): Colliander, A.

Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Colliander, A. 2015. CLASIC07 Soil Texture Data, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/YG89EC2TS7VT. [Date Accessed].

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Detailed Data Description

This data set contains soil texture data obtained for the Cloud and Land Surface Interaction Campaign 2007 (CLASIC07). The original data were extracted from a multi-layer soil characteristics database for the conterminous United States called CONUS-Soil and generated for the regional study area. Data are representative of the conditions present in the regional study area during the general timeline of the CLASIC07 campaign.

Format

Data are provided in binary files called ENVI FST, which indicates it is an Environment for Visualizing Images "dbFast" data file. An associated Extensible Markup Language (XML) metadata file is also provided for each data file.

The binary files are arranged as follows:
Number of columns: 331
Number of rows: 157
Number of bits: 64 (double)
Number of bands: 4
Pixel Size: 30 arcsec

Band 1: Clay fraction
Band 2: Sand fraction
Band 3: Latitude
Band 4: Longitude

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File and Directory Structure

Data files are available at: 

https://n5eil01u.ecs.nsidc.org/SMAP_VAL/CL07ST.001/

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File Naming Convention

The binary data file is CL07ST_clay_sand_lat_lon_sgpsubarea.bil, and the header file is CL07ST_clay_sand_lat_lon_sgpsubarea.hdr.

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File Size

The data file is approximately 1.6 MB.

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Spatial Coverage

Southernmost Latitude: 34.70°N
Northernmost Latitude: 36.00°N
Westernmost Longitude: 98.80°W
Easternmost Longitude: 96.05°W

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Spatial Resolution

30 arcsec

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Projection

World Geodetic System 1984 (WGS84)

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Temporal Coverage and Resolution

These data are representative of the conditions to be expected in the US regional study area during the approximate timeline of the CLASIC07 campaign, July 2007. Thus, temporal coverage and resolution varies by parameter. Data were obtained from a long-term database of soil texture for the conterminous United States called CONUS-Soil. Visit the Soil Information for Environmental Modeling and Ecosystem Management for more information.

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Parameter or Variable

Clay fraction (%): The fraction of clay in the top 5 cm of the soil. 
Sand fraction (%): The fraction of sand in the top 5 cm of the soil.

Parameter Range

Valid parameter values are as follows: 
Clay fraction: 0-100 % 
Sand fraction: 0-100 %

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Software and Tools

Various software packages can be used to read the data, such as ArcView, Environment for Visualizing Images (ENVI), or Interactive Data Language (IDL).

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Data Acquisition and Processing

Sensor or Instrument Description

The source of the data is a multi-layer soil characteristics data set (CONUS-Soil) based on the USDA State Soil Geographic Database (STATSGO) for application to a wide range of SVAT, climate, hydrology, and other environmental models developed by Earth System Science Center in the College of Earth and Mineral Sciences at The Pennsylvania State University.

A 30-arcsec latitude-longitude grid data set was obtained from http://www.soilinfo.psu.edu/index.cgi?soil_data&conus&data_cov&fract&datasets&geo, and a subset was extracted for the CLASIC campaign domain for the top 5 cm layer of soil.

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Contacts and Acknowledgments

Andreas Colliander
Jet Propulsion Laboratory
California Institute of Technology
4800 Oak Grove Drive, 
Pasadena, CA 91109 USA
1-818-354-0270
andreas.colliander@jpl.nasa.gov

Acknowledgments: 

Southern Great Plains soil data was retrieved from an online database hosted by the Earth System Science Center in the College of Earth and Mineral Sciences at The Pennsylvania State University, at http://www.soilinfo.psu.edu. The data are from CONUS-Soil, a multi-layer soil characteristics data set for the conterminous United States.

Document Information

DOCUMENT CREATION DATE

June 2015

DOCUMENT REVISION DATE

N/A

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