Mapping agricultural drought hazard

N/A

MODIS MOD13C1

eng

N/A

Not relevant

Mapping agricultural drought hazard

Data requirements to use: MODIS MOD13C1 ;

Data used: N/A;

Data format: N/A;

Data access: N/A;

Concise description:

The SSID is an index describing the expected seasonal vegetation productivity, considering both agricultural production and available biomass in pastoral areas. The timely detection of critical conditions in vegetation health and productivity, during a vegetation growing season and before its end, helps to identify agricultural areas where crop failures are likely to occur. It is calculated as a simple percent deviation from the historical average value of the vegetation Seasonal Small Integral parameter (i.e. the baseline). An updated SSID value is added to the historical series every sixteen days, thus each time a new MODIS MOD13C1 becomes available. The SSID is supplied together with a reliability coefficient (RC) which is related to the temporal position of the current observation with respect to the total length of the examined season (i.e., RC reaches 100% once the vegetation growing season has ended). During the descending phase of the vegetation growing season (i.e., once the NDVI curve reach its maximum), the values of the SSID are normally subjected to minimal changes.

eng

Seasonal Small Integral Deviation (SSID) index

ISO 19115:2003/19139

1.0

N/A