March 525 2006

Fig. 9.7 Station data for March 5-25, 2006.

weather. However, precipitation totals for the event in primary wheat areas were very low, especially considering the storm's intensity and duration. A detailed assessment of WMO station data from portions of central and northern India indicated missing values, likely due to power outages or data transfer problems. However, as seen in Figure 9.8, satellite precipitation estimates (CMORPH) for the region indicated a large swath ofheavy rainfall across much of central and northern India.

Despite its limitations, JAWF meteorologists felt compelled to use the CMORPH data to develop crop impact assessments; the untimely widespread heavy rain and severe weather was expected to cut into crop yields, ttis assessment was ultimately supported by field reports over the ensuing months. If the crop assessment had been based solely on station data, the negative impacts would not have been noted until much later.

ttese and other analytical tools are used each month of the crop cycle depending on the particular crop and country of interest, tte next section demonstrates how a combination of these tools and analytical techniques are used to make crop estimates.

March 5-25, 2006

CMORPH tow or the US Nsoonai Weacfie-r Swviw

Pep Dlff

USDA

Fig. 9.8 Station datavs. CMORPH.

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