A rainfall monitoring product based on daily rainfall estimates from the Climate Prediction
Center.
The interface allows users to analyze recent rainfall in the desert locust breeding
areas via maps and location-specific time series.
Reference
Joyce, R.J., J.E. Janowiak, P. A. Arkin and P. Xie, 2004: CMORPH: A Method that Produces
Global Precipitation Estimates from Passive Microwave and Infrared Data at High Spatial
and Temporal Resolution. J. Hydrometeorology, 5, 487-503.
Dataset Documentation
Precipitation Estimates
Data
Daily precipitation estimates on a 0.25 x 0.25 deg. lat/lon grid
Data Source
Climate Prediction Center Morphing Technique
(CMORPH)
This tool enables users to view maps of satellite estimates of daily rainfall over
areas within the range of the Desert Locust, from West Africa to South Asia. The
tool uses Climate Prediction Center Morphing Technique (CMORPH) satellite-estimated
precipitation data from December 2002 to the present. The data are updated every
day. This tool enables users to:
view maps of these data for customized time periods, and with overlays of state or
provincial boundaries;
produce time series graphs of these data that illustrate daily and dekadal precipitation
values over time, precipitation values for the current year compared to previous years,
and accumulated precipitation over the past year
This tool can be helpful in seeing where recent rainfall has occurred that might support
the growth of green vegetation that could attract Desert Locusts.
For further information about the relationship between satellite-estimated rainfall
and Desert Locust activity, or if you have questions about how to interpret the data
in this tool, please contact Pietro Ceccato (pceccato@iri.columbia.edu).
To return to the menu page, click the "Locust" link at the top left corner of the
page.
Click and Drag to Zoom in to a Region on the Map:
Click the left mouse button at the upper-left corner of the region to which you would
like to zoom.
While holding down the mouse button, drag the mouse to the lower-right corner of the
region to which you would like to zoom.
Release the left mouse button. The map will redraw automatically.
Zoom Out to the Full Map Extent:
Move your mouse over the map until you see several icons appear above the map.
Click the icon representing a magnifying glass.
The map will redraw automatically.
Overlay or Remove Administrative Boundaries on the Map:
Move your mouse over the map until you see several icons appear above the map.
Click the "Layers" icon.
Select from among the labeled check boxes that appear to select the administrative
boundaries of interest.
Change the Date of the Map:
Find the the date of the daily estimated rainfall map by moving your mouse over the
map until you see several icons appear above the map. Ensure that the "Time" icon
has been selected and a text box will appear above the map with the date inside.
To step forward or backward by one day, click the corresponding arrow buttons to the
left or right of the date text box, and the map will automatically refresh.
To manually change the date of the map, type your date of interest into the text box.
Use a format such as "10 Jan 2008", and press "enter".
Generate Time Series Analyses:
From the "Spatially Average Over" drop-down menu select the size of a rectangular
box (e.g., 27 x 27 km box) over which estimated daily rainfall will be averaged to
produce time series.
Click on a location on the map to generate time series graphs of daily precipitation
estimates for the selected region.
Please feel free to email us with any questions or comments.
Helpdesks
Contact help@iri.columbia.edu with any technical questions or problems with this Map Room, for example, the forecasts
not displaying or updating properly.