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You are here: GES DISC Home Giovanni - Interactive Visualization and Analysis Additional Features Users Manual Giovanni-3 Online Users Manual: 7 NEESPI Giovanni

Giovanni-3 Online Users Manual: 7 NEESPI Giovanni


The NASA NEESPI Data and Services Center project is supported by NASA HQ through ROSES 2005 NNH05ZDA001N-ACCESS.

 

Click on any of the questions below for the NEESPI Giovanni instance for further information.

  1. What is NEESPI?
  2. What are the current data parameters for NEESPI supported in Giovanni 3?
  3. How are data parameters selected in the NEESPI Giovanni 3 instance?
  4. What are the current data output capabilities for the NEESPI data parameters in Giovanni 3?
  5. How is the spatial area of interest selected in the NEESPI Giovanni 3 instance?
  6. How is the temporal range selected in the NEESPI Giovanni 3 interface?
  7. What are the plotting preference options for data output and visualization?
  8. How can the generated images be saved?
  9. How are the GPCP products in NEESPI generated?

 

What is NEESPI?

The Northern Eurasia Earth Science Partnership Initiative, or NEESPI, is a currently active, yet strategically evolving program of internationally-supported Earth systems science research, which has as its foci issues in northern Eurasia that are relevant to regional and Global scientific and decision-making communities.

Please also see the NEESPI Home Page.

What are the current data parameters for NEESPI supported in Giovanni 3?

Data Parameter Instrument
Aerosol Optical Thickness MODIS
Aerosol Small Mode Fraction MODIS
Atmospheric Water Vapor MODIS
Cloud Top Pressure MODIS
Cloud Top Temperature MODIS
Fire Pixel Count MODIS Terra-derived
Land Surface Temperature MODIS Terra-derived
Cloud Fraction MODIS Terra-derived
Cloud Optical Depth — Ice (QA-w) MODIS

Cloud Optical Depth — Liquid (QA-w)

MODIS

Cloud Effective Radius (R_eff) — Ice (QA-w)

MODIS

Cloud Effective Radius (R_eff) — Liquid (QA-w)

MODIS
Fire Radiative Power MODIS Terra-derived
Soil Moisture AMSR-E-derived
Ice Occurrence Frequency, Snow Occurrence Frequency, Snow and Ice Occurrence Frequency NESDIS/IMS-derived
Precipitation GPCP


How are data parameters selected in the NEESPI Giovanni 3 instance?

Individual parameters are selected by clicking in the check boxes. An entire group may be selected by clicking the group box (leftmost column). After this is done, individual parameters may be deselected by clicking in the appropriate check box(es).

What are the current data output capabilities for the NEESPI data parameters in Giovanni 3?

The NEESPI Giovanni-3 interface currently has the following data output/visualization capabilities:

 

Each of these output options is briefly described in the Services and Operations section of the Online Users Manual.

How is the spatial area of interest selected in the NEESPI Giovanni 3 instance?

The spatial area of interest can be selected by either of the two methods described below

Java applet map: The Java applet map can be utilized to "click and drag" a selection box to designate the spatial area of interest.

Geographic coordinates: The geographic coordinates of the corners of the spatial area box can be input individually. This method can be used if Java is not enabled. Note that decimal and not degree (seconds and minutes) coordinates must be entered.

How is the temporal range selected in the NEESPI Giovanni 3 interface?

The beginning month/year and end month/year for analysis are selected using the calendrical menus on the Giovanni interface page. Error messages will be generated if the beginning month or the end month are out of the data set time range, or if the end month is before the beginning month. For NEESPI, the beginning month cannot be earlier than January 2000, and the data set currently ends in December 2006.

What are the plotting preference options for data output and visualization?

The plotting preference options are described in the Plot Preferences section of the Online Users Manual.

After the initial output has been generated, the plotting preferences can be changed and a new output generated using the "Submit Refinements" button.

How can the generated images be saved?

On a Windows computer, right-click on the image and then select "Save Image As". The visualization output is a GIF image.

How are the GPCP (Global Precipitation Climatology Project) products in NEESPI generated?

The GPCP monthly products in NEESPI data portal are generated from monthly GPCP version 2 combination data (http://precip.gsfc.nasa.gov/). 

The original 2.5° x 2.5° dataset has been regridded to 1.0°x1.0° using the Grid Analysis and Display System (GrADS, http://grads.iges.org/grads/grads.html) developed by the Center for Ocean-Land-Atmosphere Studies (COLA). The regridding method used is box averaging.

Reference:

Adler, R.F., G.J. Huffman, A. Chang, R. Ferraro, P. Xie, J. Janowiak, B. Rudolf, U. Schneider, S. Curtis, D. Bolvin, A. Gruber, J. Susskind, P. Arkin, E. Nelkin 2003: The Version 2 Global Precipitation Climatology Project (GPCP) Monthly Precipitation Analysis (1979-Present). J. Hydrometeor., 4,1147-1167.

 

 


 

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