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Swath Center Pixel Extractor for Giovanni-3
Entry ID: G3_swathCenterPixel

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Summary
Abstract: The Swath Center Pixel Extractor Operation for Giovanni-3 is a
special-purpose service designed to perform center-pixel
subsetting on swath data. The service takes a series of swaths
as an input and creates a corresponding series of output swaths.
The output values are the result of applying center-pixel
filtering to the input swaths.

Input parameters:
Geophysical variables.

Output ...
Center-pixel filtered data in satellite swath format

Output Parameters:
Same as input parameters

File Type:
Both input and output files are HDF4.

Sub-definitions:

  • Swath: 1- or 2-dimensional data structure.

  • Scan line: horizontal dimension of data structure.

  • Vertical level of measurement: vertical dimension of data structure.

  • Pixel -- individual data element of the data structure.



Service Description:


  1. Read in each swath (independently).

  2. Mask out bad/missing/fill values.

  3. Extract center pixel from each scan line; write to output file.

  4. Write corresponding time, latitude, longitude, and pressure level (if
    needed) to output file.



Algorithm Details
If the data contains a profile for each pixel, the profile
for the center pixel is extracted.

Caveats/Warnings:
All swaths are assumed to have the same width and number of
vertical levels (where needed), but they may vary in the number
of scan lines in the swath.

Origin/Software:


User Options




Other information: View entire text
Related URL
Description: Access Giovanni.
Service Citation
URL: http://giovanni.gsfc.nasa.gov
Parent SERF
This data service description is a member of a collection. The collection is described in
Giovanni
Service Keywords
DATA ANALYSIS AND VISUALIZATION >VISUALIZATION/IMAGE PROCESSING Parameter Definition

Quality Data quality is dependent on input data sets and processing.
Access Constraints There are no access constraints to data in Giovanni-3.
Use Constraints Use of the data and the Giovanni system should be acknowledged in
published works and presentations.
Service Provider
NASA/GSFC/SED/ESD/GCDC/GESDISC > Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA Supplemental Info
Service Organization URL: http://disc.gsfc.nasa.gov/

Service Provider Personnel
Name: STEVE KEMPLER
Phone: 301-614-5473
Phone: 1-877-422-1222
Fax: 301-614-5268
Email: gsfc-help-disc at lists.nasa.gov
Email: Steven.J.Kempler at nasa.gov
Contact Address:
Goddard DAAC Helpdesk
GES DAAC
Global Change Data Center, Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Personnel
JAMES G ACKER
Role: SERF AUTHOR
Phone: 301-614-5435
Fax: 301-614-5268
Email: james.g.acker at nasa.gov
Contact Address:
Goddard Earth Sciences Data and Information Services Center
Code 610.2
NASA Goddard Space Flight Center
City: Greenbelt
Province or State: MD
Postal Code: 20771
Country: USA
Extended Metadata Properties
metadata.extraction_date: 2015-05-03 22:05:27
metadata.keyword_version: 8.1

Creation and Review Dates
SERF Creation Date: 2006-10-27
SERF Last Revision Date: 2007-07-13

Link to NASA website
Responsible NASA Official:   Dr. Stephen Wharton
Webmaster:   Monica Lyles   ·  Contact GCMD User Support for assistance