Data Set ID:
SV12STM

SMAPVEX12 Soil Texture Map, Version 1

This data set consists of soil texture classification data derived from field surveys as part of the Soil Moisture Active Passive Validation Experiment 2012 (SMAPVEX12). The soil texture classification map provides information about vegetation present in the study area.

This is the most recent version of these data.

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Parameter(s):
  • SOILS > SOIL TEXTURE
Data Format(s):
  • ESRI Shapefile
Spatial Coverage:
N: 49.96, 
S: 49.44, 
E: -97.85, 
W: -98.51
Platform(s):FIELD SURVEYS
Spatial Resolution:
  • 316 m x 316 m
Sensor(s):SOIL SAMPLER
Temporal Coverage:
  • 7 June 2012 to 19 July 2012
Version(s):V1
Temporal ResolutionVariesMetadata XML:View Metadata Record
Data Contributor(s):McNairn, H., J. Powers, and G. Wiseman.

Geographic Coverage

Other Access Options

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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.

McNairn, H., J. Powers, and G. Wiseman. 2014. SMAPVEX12 Soil Texture Map, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/5694JSVXBA3A. [Date Accessed].
Created: 
28 February 2020
Last modified: 
28 February 2020

Data Description

This data set consists of soil texture classification data derived from field surveys as part of the Soil Moisture Active Passive Validation Experiment 2012 (SMAPVEX12). The soil texture classification map provides information about vegetation present in the study area.

Parameter

The measured parameter for this data set is soil texture classification. Soil texture classification distinguishes between soil types, water, bedrock, and urban areas. Values range between 2 and 74; not all values are necessarily present. The data field C_SOIL contains the soil texture classification data as described in Table 1.

Table 1. Soil Texture Classification Designations

Class Code

Class Name

2 Urban, modified or unclassified
6 Water
16 Salt flats
18 Sand and gravel
19 Eroded slopes
20 Sand and gravel (gleysols)
21 Sandy lacustrine
22 Variable textured alluvium (regosols)
26 Sandy eolian
27 Loamy till with water worked surfaces
28 Loamy till (black chernozems)
29 Loamy till (gleysols)
30 Sandy loam lacustrine
31 Loamy lacustrine
32 Strongly acidic clay till
33 Clayey lacustrine (black chernozems)
34 Sandy lacustrine (gleysols)
35 Shallow organic fen peat
36 Deep organic fen peat
37 Sandy loam lacustrine (gleysols)
38 Loam lacustrine (gleysols)
40 Clayey lacustrine (gleysols)
42 Clay over shale bedrock
48 Loamy till (dark grey chernozems)
49 Marsh
50 Highly calcareous loamy till (brunisols and dark grey chernozems)
51 Loamy till (luvisols)
52 Highly calcareous loamy till (black chernozems)
53 Acidic coarse loamy till
54 Weakly calcareous sandy loam till
55 Weakly calcareous sandy loam till (gleysols)
56 Extremely calcareous loamy till (black chernozems)
57 Extremely calcareous loamy till (black chernozems)
60 Variable textured alluvium (gleysols)
62 Highly calcareous loamy till (gleysols)
63 Clayey lacustrine (gleysols)
64 Clayey lacustrine (luvisols and dark grey chernozems)
68 Shallow organic forest peat
69 Deep organic forest or sphagnum peat
71 Precambrian bedrock
72 Sand and gravel with overlays
73 Limestone bedrock
74 Sand and gravel with overlays (gleysols)

Note: For information on additional parameter fields that are not provided in this document, please refer questions to Agriculture and Agri-Food Canada.

File Information

Format and File Description

Data are provided in ESRI shapefile format. Included are the main ESRI Shapefile (.shp), the index file (.shx), the database file (.dbf), and the projection file (.prj)

Spatial Information

Coverage

Southernmost Latitude: 49.44°N
Northernmost Latitude: 49.96°N
Westernmost Longitude: 98.51°W
Easternmost Longitude: 97.85°W

Resolution

The field survey methods provided approximately 25 to 30 inspection sites per section, or one site per 10 hectares (316 m). Thus, the spatial resolution for this data set is approximately 316 meters.

Projection

Data are provided in Universal Transverse Mercator (UTM), Zone 14, North American Datum of 1983 (NAD 1983) coordinates.

Temporal Information

Coverage and Resolution

Data were obtained at various intervals, usually once per day, from 07 June through 19 July 2012.

Software and Tools

Various software packages can be used to read the ESRI shapefile, such as ArcGIS and MATLAB, or other similar GIS software.

Data Acquisition and Processing

Soil texture maps were produced by detailed soil surveys carried out by Agriculture and Agri-Food Canada at a scale of 1:50,000 for the more homogeneous clay soils and 1:20,000 for the sandy and loam soils, which were landscapes that were more complex. The soil data used for the SMAPVEX campaign was sourced from the Canada-Manitoba Soil Survey Reports that cover most of the southern portion of Manitoba. The soils data that are available for the SMAPVEX study area were sourced from Soil Survey Reports (mbd60 and mbd20). Soil survey methods involved extensive field sampling, lab analysis, and air photo interpretation to map and document the soils in these areas. The field survey methods provided approximately 25 to 30 inspection sites per section, or one site per 10 hectares (316 m). Boundaries delineating map units in the survey area were compiled on an aerial photographic base at a scale of 1:20,000 (1 cm = 0.2 km).

For more information, visit the Agriculture and Agri-Food Canada Soil Survey Reports for Manitoba Web site.

References and Related Publications

McNairn, H., T. Jackson, G. Wiseman, S. Belair, A. Berg, P. Bullock, A. Colliander, M. Cosh, S. Kim, R. Magagi, M. Moghaddam, J. Adams, S. Homayouni, E. Ojo, T. Rowlandson, J. Shang, K. Goita, and M. Hosseini. In Press. The Soil Moisture Active Passive Validation Experiment 2012 (SMAPVEX12): Pre-Launch Calibration and Validation of the SMAP Satellite. IEEE Trans. Geosci. Rem. Sens.

Contacts

Heather McNairn
Science and Technology Branch
Agriculture and Agri-Food Canada
960 Carling Avenue 
Ottawa, Ontario K1A 0C6 Canada 
e-mail: Heather.McNairn@agr.gc.ca
phone: +1 613-759-1815

Jarrett Powers
Science and Technology Branch
Agriculture and Agri-Food Canada
200-303 Main Street
Winnipeg, Manitoba R3C 3G7 Canada
e-mail: jarrett.powers@agr.gc.ca
phone: +1 204.259.4006

Grant Wiseman
Science and Technology Branch
Agriculture and Agri-Food Canada
200-303 Main Street
Winnipeg, Manitoba R3C 3G7 Canada
e-mail: grant.wiseman@agr.gc.ca
phone: +1 204.259.4006

Acknowledgments

Agriculture and Agri-Food Canada are acknowledged for their support for the campaign.

Document Information

DOCUMENT CREATION DATE

December 2014

DOCUMENT REVISION DATE

February 2020

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