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Release Notes for Giovanni 4.2

Release notes for Giovanni 4.2

Release Notes for Giovanni 4.2

Giovanni 4 is the next generation of Giovanni. It is designed to be faster, with a user interface that is easier to understand for new and occasional users.

The current release, v4.2,  focuses on daily aerosol and precipitation data.  It likely contains some bugs, some known (see Known Issues), and some not yet known.  Please send us feedback using the Feedback button.  

Giovanni 4.2 consists of the following key features:

New in Giovanni 4.2

  • Added Data Variables
    • Daily Rainfall Estimate from TRMM_3B42
    • SeaWiFS Aerosol Optical Depth at 412, 490, 510, 670, and 865 nm
  • Plot Options for Interactive Map
  • Improved performance for interactive scatter plot (but still a lot to go)
  • Various Bug Fixes

New in Giovanni 4 (vs. Giovanni 3)

New plot types

  • Interactive map, lat-lon map rendered as a WMS layer with zoom, pan and color map selection
  • Interactive scatterplot, linked to a map of locations of observations
  • Interactive Correlation & Time Averaged Difference Maps

Faster Services

  • Lat-lon map, averaged over time
  • Time series
  • Correlation map

Available data variables

  • Total Aerosol Optical Depth from MISR, MODIS, OMI and SeaWiFS
  • Optical depth of aerosol species from the GOCART model
  • Aerosol Absorption Optical Depth from OMI
  • Angstrom Exponent from MODIS and SeaWiFS
  • Aerosol Index from OMI
  • Daily Rainfall Estimate from TRMM_3B42

New User Interface

The User Interface is being redesigned to be less opaque to new and occasional users.  It also allows users to narrow down variables for selection either by selecting particular attributes ("faceted browsing") or filtering on keywoards.  However, experienced Giovanni users may see some "user interface shift shock". In some cases, certain things may seem more difficult or tedious to do than in Giovanni 3.  Please tell us those things, with particular reference to how you used to do them in Giovanni 3!  We may also be able to provide some short cuts (e.g., Bookmarkable URLs below).

Bookmarkable URLs 

Bookmarkable URLs allow you to save URLs in order to re-run the exact same workflow at any future date. These can also be used to save partially filled in forms, acting as a kind of template for common analysis operations.

Known Issues

Browser Compatibility

  • iPad:  Giovanni 4.2 does not yet run on iPad/iPhone Safari.
  • Safari:  When using Display as PDF in Safari, user is warned about losing session data.  This is a false warning.
  • Safari and Chrome on Mac:  Scrollbars for the facets on the right do not show up for some Mac browsers (Safari, Chrome), unless scrollbars are set to Always in the System Preferences -> General of the Mac.
  • Firefox: the name/label of the produced result can not be edited.

User Interface

  • Reset button may not always set the values in various pickers (service, date, spatial bounding box etc.) depending on how Giovanni was accessed initially .
  • Date-Time picker has hour selectors in preparation for adding hourly data. Currently, they are always disabled since hourly data has not been made available through Giovanni-4.

Interactive Scatter Plot

  • The current size limit on space-time selection is too restrictive.  In the near future, we plan to increase the limit.
  • Plot downloads for the scatter plot sometimes render poorly with text continuing off the plot.

Interactive Map

  • Depending on the data range and zoom level, image may appear to have rectangular blocks (WMS tile boundaries). A solution to resolve this is in the works.
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Last updated: May 09, 2013 01:13 PM ET