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Data Set ID:
NSIDC-0575

SMEX03 Site Photographs, Oklahoma, Version 1

The SMEX03 Site Photographs data set includes photographs of the regional study areas of Alabama, Georgia, and Oklahoma, USA as part of the 2003 Soil Moisture Experiment (SMEX03).

Geographic Coverage

Parameter(s):
  • Land Use/Land Cover > Land Cover
Spatial Coverage:
  • N: 36.87, S: 34.44, E: -97.42, W: -98.33

Spatial Resolution: Not Specified
Temporal Coverage:
  • 2 July 2003 to 17 July 2003
Temporal Resolution: Not specified
Data Format(s):
  • JPEG
Platform(s) Not specified
Sensor(s): Not specified
Version: V1
Data Contributor(s): Michael Cosh, Thomas Jackson, Charles Laymon
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.

Cosh, M., T. Jackson, and C. Laymon. 2013. SMEX03 Site Photographs, Oklahoma, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/9NR0M4ILQEZN. [Date Accessed].

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Detailed Data Description

Format

Photographs are provided as JPEG image files. Select Alabama photographs, which were taken with disposable cameras then converted to digital images, have a resolution of approximately 600 by 400 pixels. All other images were taken with digital cameras and have a resolution of approximately 1200 by 900 pixels.

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File and Directory Structure

The top directory level contains subdirectories for each SMEX03 study region along with the readme.txt file, as shown in Figure 1. Within the Alabama directory, photographs are further organized into subdirectories for each Field Number (FN).

Figure 1. SMEX03 Site Photographs
Directory Structure

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File Naming Convention

Alabama

Alabama image files are named according to the following convention and as described in Table 1. 

File Naming Convention:
RGFN.mdd.l(n).view#.jpg

File Name Example:
AL28.625.a.synoptic9.jpg

Table 1. Description of Alabama JPEG File Name Variables
Variable Description
RG Regional Study Area (AL: Alabama)
FN 2-digit Field Number in which photograph was taken (01, 02, 03...59)
m When present, indicates 1-digit month
dd When present, indicates 2-digit day
l When present, indicates a location within a Field Number (a, b, c, d)
(n) When present, a number following l (location) indicates additional photographs taken in the same location. For example, b2 in the file name AL23.628.b2.jpg indicates that this is the second photograph for this location.
view
When present, indicates View or Camera Orientation, as described here:
View/Camera Orientation Values Description
canopy View of the canopy
nadir Straight down
oblique ~30-45° below horizontal
synoptic Overview of the setting
# When present, a number following view indicates additional photographs taken with the same camera orientation. For example, synoptic9 in the file name AL28.625.a.synoptic9.jpg indicates that this is the ninth photograph for this area taken with synoptic orientation.
.jpg Indicates that this is a JPEG file.

Georgia

Georgia JPEG files are named according to the following convention and as described in Table 2.

File Naming Convention:
RGFN_mmddyy.jpg

File Name Example:
GA01_070103.jpg

Table 2. Description of Georgia JPEG File Name Variables
Variable Description
RG Regional Study Area (GA: Georgia)
FN 2-digit Field Number in which photograph was taken (01, 02, 03...52)
mm 2-digit month
dd 2-digit day
yy 2-digit year
.jpg Indicates that this is a JPEG file.

Oklahoma

Oklahoma JPEG files are named according to the following convention and as described in Table 3:

File Naming Convention: rgFN_PI_mmddyy.jpg

File Name Example:
LW11_01_070403.jpg

Table 3. Description of Oklahoma JPEG File Name Variables
Variable Description
rg Regional Study Areas (on:Oklahoma North; os:Oklahoma South; lw: Little Washita watershed)
FN Indicates Field Number in which the photograph was taken, as further described here:
Region FN Values
Oklahoma North 01, 02, 03...36
Oklahoma South 01, 02, 03...52
Little Washita 01, 02, 03...33
PI Indicates Picture Index number, and thus additional pictures, of the same field. Possible values are further described here:
Region PI Values
Oklahoma North 01, 02, 03, 04
Oklahoma South 01, 02, 03, 04, 05
Little Washita 01, 02, 03, 04
mm 2-digit month
dd 2-digit day
yy 2-digit year
.jpg Indicates that this is a JPEG file.
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File Size

File quantity and size for each study area are as follows:

Alabama

There are 462 files that are approximately 100 KB to 600 KB each.

Georgia

There are 52 files that range in size from approximately 360 KB to 3 MB each.

Oklahoma

There are 206 files that range in size from approximately 30 KB to 920 KB each.

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Volume

Total volume is approximately 320 MB for all images. Volume by region is listed in Table 4.

Table 4. File Volume by Region
Region Total Volume
Alabama 175 MB
Georgia 45 MB
Oklahoma 97 MB
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Spatial Coverage

This data set covers the regional study areas as referenced by the following:

Alabama

Southernmost Latitude: 34.68° N
Northernmost Latitude: 35.16° N
Westernmost Longitude: 87.08 ° W
Easternmost Longitude: 85.78 ° W

Georgia

Southernmost Latitude: 31.5° N
Northernmost Latitude: 31.8° N
Westernmost Longitude: 83.8° W
Easternmost Longitude: 83.5° W

Oklahoma

Southernmost Latitude: 34.44º N
Northernmost Latitude: 36.87º N
Westernmost Longitude: 98.33º W
Easternmost Longitude: 97.42º W

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Temporal Coverage

The temporal coverage for each regional study area is as follows:

Alabama

21 June 2003 to 02 July 2003

Georgia

23 June 2003 to 07 July 2003

Oklahoma

02 July 2003 to 17 July 2003

Temporal Resolution

The temporal resolution for each regional study area is as follows:

Alabama

All sites were photographed at least once during the experiment. Several sites, primarily cropland sites, were photographed on two occasions.

Georgia

Photographs were collected throughout the experiment.

Oklahoma

Photographs were collected throughout the experiment.

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Sample Image

Figure 2 displays the image file GA07_070103.jpg.

Figure 2. Sample Image of Georgia Study Area

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Software and Tools

Software and Tools

Any image viewing program that recognizes JPEG file format is recommended.

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Data Acquisition and Processing

Alabama, Georgia, and Oklahoma JPEG image files were acquired by teams of graduate students and volunteers using digital cameras. The Alabama image collection also includes photographs taken with disposable cameras which were then converted to digital images.

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References and Related Publications

Contacts and Acknowledgments

Michael H. Cosh
Hydrology Remote Sensing Laboratory
US Department of Agriculture (USDA) - Agricultural Research Service (ARS)
Hydrology and Remote Sensing Laboratory
Beltsville, Maryland 20705 USA

Thomas J. Jackson
Hydrology Remote Sensing Laboratory
US Department of Agriculture (USDA) - Agricultural Research Service (ARS)
Bldg. 007, Rm. 104, BARC-West
Beltsville, Maryland 20705 USA

Charles Laymon
Universities Space Research Association
Global Hydrology and Climate Center
NASA Marshall Space Flight Center
Huntsville, Alabama 35812 USA

Acknowledgments: 

The investigators would like to thank the many graduate students and volunteers who worked to collect these field photographs, as well as the Soil Moisture Experiment 2003 Science Team and the Grazinglands Research Laboratory for their assistance. The investigators also thank the National Aeronautics and Space Administration (NASA) for their generous contributions to the study. This work was supported by the NASA Aqua AMSR, Terrestrial Hydrology, and Global Water Cycle programs.

Document Information

DOCUMENT CREATION DATE

June 2008

DOCUMENT REVISION DATE

No technical references available for this data set.
No FAQs or How Tos available for this data set.

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