When Data becomes available in the Archive
Drought is a phenomena that can be measured by monitoring rainfall and vegetation activity. In contrast to Floods or Storms, Drought is a creeping disaster that becomes worse when rainfall continues to miss or heat is continuing to persist.
Drought can damage the harvest if it coincides with the growth season of crops.
Therefore we are building up archives of meteorology data.
These data become available with slight delays with respect to the current day.
The extent of the delays depend on a series of factors. In this table we will only state the delay allowing the user of our data services to understand when he can expect new data.
|Rainfall||Monthly||up to 4 days||Day 4 of the month for the previous month!|
|Standard Precipatation Index SPI||Monthly||up to 2 days||6 Hours after arriving of Rainfall data of Weather stations.|
|Heatwaves||Daily||up to 3 days||Processing every day on data arriving 2 days after event occurred.|
|Blended and Interpolated SPI||Monthly||up to 6 days||Depends on arriving of GPCC data|
|Vegetation Absorption||10 Days||7 days after||MODIS Anomaly based on time series from 2001 to system date minus 1 year|
|Soil Moisture||10 Days||3 days||Anomaly based on time series 1995 up to system date minus 1 year|
In January of each year the anomalies for Soil Moisture and fAPAR are reprocessed in order to include the last complete year in the averages and standard deviations. Therefore during January you can experience small variations in values if you visit the site on different days.
Also note that fAPAR data are based on MERIS input from 1999 to 2011, on SPOT vegetation input for 2012 and 2013 and on MODIS input for 2014 onwards. Anomalies for MERIS and SPOT data are therefore not recomputed. Only MODIS data are recomputed.