Global chlorophyll levels,1998-2010. Global satellite map showing chlorophyll levels in the oceans and vegetation density on land,during the period from 1998 to 2010. The ocean colours show concentration of chlorophyll (due to phytoplankton blooms) in milligrams per cubic metre,from low levels (dark blue,0.01) to high levels (light green,64). The vegetation (Normalized Difference Vegetation Index,NDVI) ranges from 0 (white-grey) to 0.9 (dark green). The chlorophyll data was obtained by the Sea-viewing Wide Field-of-view-Sensor (SeaWiFS) on the OrbView-2 spacecraft. SeaWiFS was also able to measure the colours for land vegetation | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / GeoEye / Ocean Color Web / NASA EARTH OBSERVATORY |
Bildgröße: | 3819 px × 2291 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |