Summary
 
Definition

The <Summary> is a brief description of the data set that allows potential users to determine if the data set is useful for their needs. The following are suggestions to populate the <Summary> field:

  • Capitalization should follow standard constructs. For readability, all capital letters or all lower case letters should not be used. Use the appropriate case where applicable.
  • Acronyms should be expanded to provide understanding.
  • The <Summary> may contain tabular information.
  • URLs will be automatically hyperlinked.
  • Where applicable, the <Summary> should include brief statements of the following information:
    • Data processing information (gridded, binned, swath, raw, algorithms used, necessary ancillary data sets).
    • Date available.
    • Data set organization (description of how data are organized within and by file).
    • Methodology or analytical tools.
    • Time gaps in data set coverage.
    • Units and unit resolution.
    • Similarities and differences of these data to other closely-related data sets.
    • Purpose and/or intended use of data.
    • Other pertinent information.
 
Syntax
<Summary>text</Summary>
  • Multiple lines of text are allowed for the <Summary> field and may contain characters from the UTF-8 character set.
 
Usage
  • The <Summary> field is required and may not be repeated.

 

Examples

<Summary>Satellite Coincidence Subsetted Intermediate Data (CSI): A subset of 1B01, calibrated VIRS (0.63, 1.6, 3.75, 10.8, and 12 um) radiances at 2.2 km resolution over a 720 km swath from a TRMM pass over the SCSMEX Southern Site.</Summary>

<Summary>Global monthly AMSR-E-derived Soil Moisture.
The dataset contains global monthly-mean soil moisture statistics (average values and standard deviation) for 1 by 1 degree grid cells. The source for the data is AMSR-E daily estimates of soil moisture (Product name: AMSR_E_L3_DailyLand). The dataset covers the time period starting July 2002.
 
Data files contain 180 lines with 360 pixels per line. The projection is latitude-longitude with the upper left corner of the first pixel of the first line positioned at 90°N 180°W.</Summary>


 

Click image to return to GCMD home page
Visit GCMD website
This document should be cited as:
Directory Interchange Format (DIF) Writer's Guide, 2008.
Global Change Master Directory. National Aeronautics and Space Administration. [http://gcmd.nasa.gov/User/difguide/].