2019-12-18T11:46 AM
Hi,
The availability of data depends on the geophysical variable and the Level of processing. For example, you will have L2 sst and chlorophyll-a data available for this area (from Sentinel-3 SLSTR and OLCI) as they are quite direct measurement of the ocean. L3 and L4 SST and chlorophyll-a are also available as they are interpolated from the various available sensors (as you can see in Odyssea L4 global and regional Mediterranean sea products). The geostrophic current (from GlobCurrent) is more difficult to retrieve as it is an indirect measurement of the current. First it implies mapping of along track altimetric data to fill the holes between tracks, which can in addition contain more errors near the coast, . Then it computes only the part of the current in geostrophic balance, which is insufficient for some regions. This explains why no current is computed in the Black sea.
I hope this answers your question.
The availability of data depends on the geophysical variable and the Level of processing. For example, you will have L2 sst and chlorophyll-a data available for this area (from Sentinel-3 SLSTR and OLCI) as they are quite direct measurement of the ocean. L3 and L4 SST and chlorophyll-a are also available as they are interpolated from the various available sensors (as you can see in Odyssea L4 global and regional Mediterranean sea products). The geostrophic current (from GlobCurrent) is more difficult to retrieve as it is an indirect measurement of the current. First it implies mapping of along track altimetric data to fill the holes between tracks, which can in addition contain more errors near the coast, . Then it computes only the part of the current in geostrophic balance, which is insufficient for some regions. This explains why no current is computed in the Black sea.
I hope this answers your question.