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The Advantages of Synergy-Quantitative Earth Science Data Visualization and Analysis with Giovanni, Panoply, and ExcelThe NASA Giovanni data analysis system provides a multitude of basic analysis capabilities for numerous Earth science data products which are available in the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) archive, as well as for additional selected data products provided by other NASA Distributed Active Archive Center (DAAC) archives. In Giovanni, users can easily generate time-averaged data maps, area-averaged time-series, Latitude-Time and Longitude-Time Hovmoeller diagrams, correlation maps, accumulation maps, and map animations (22 analysis options are available in total). While ASCII text output is available for time-series plots, it is not included as an option for data maps. In order to provide a quantitative, easy-to-use numerical output in ASCII text form, the NetCDF file output from a Giovanni visualization is downloaded and then opened with the free NASA visualization software package Panoply. Panoply provides the capability of translating the Giovanni file into comma-separated-variable (CSV) output. Panoply also provides additional visualization options, including the facile calculation of difference maps and quasi-anomaly maps using Giovanni output files. The CSV files from Panoply can then be imported into an Excel spreadsheet, where an Excel macro converts the CSV files. The output consists of latitude-longitude-data value triads in text form for maps, and either longitude-time-data value or latitude-time-data value triads in text form for Hovmoeller diagrams. This presentation will explicate the basic procedure for the conversion, and then provide several examples where the procedure is applied to Giovanni output from different analysis options.
Document ID
20180008660
Acquisition Source
Goddard Space Flight Center
Document Type
Presentation
Authors
Acker, James G. (Adnet Systems, Inc. Rockville, MD, United States)
Alcott, Gary T. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ventura, Melanie (Fairmont Heights High School)
Wei, Jennifer C. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Meyer, David J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
December 19, 2018
Publication Date
December 10, 2018
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN63892
Meeting Information
Meeting: AGU Fall Meeting 2018
Location: Washington, DC
Country: United States
Start Date: December 10, 2018
End Date: December 14, 2018
Sponsors: American Geophysical Union (AGU)
Funding Number(s)
CONTRACT_GRANT: 80GSFC17C0003
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Earth science
remote sensing
data analysis

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