Global Biogeographical Pattern of Ecosystem Functional Types Derived From Earth Observation Data

Global Biogeographical Pattern of Ecosystem Functional Types Derived From Earth Observation Data

The present study classified global Ecosystem Functional Types (EFTs) derived from seasonal vegetation dynamics of the GIMMS3g NDVI time-series. Rotated Principal Component Analysis (PCA) was run on the derived phenological and productivity variables, which selected the Standing Biomass (approximation of Net Primary Productivity), the Cyclic Fraction (seasonal vegetation productivity), the Perm...

Optical Data Downlinks from Earth Observation Platforms

The increasing resolution of earth observation sensors will require much higher data rates for the data downlink in future than is feasible with conventional RF-technology. This applies for earth observation satellites as well as for aeronautic observation platforms, such as aircraft or stratospheric high altitude platforms. The most promising solution for this data downlink bottleneck is the a...

Estimating tropical deforestation from Earth observation data

Global pattern of NPP to GPP ratio derived from MODIS data: effects of ecosystem type, geographical location and climate

Aim To examine the global pattern of the net primary production (NPP)/gross primary production (GPP) ratio of the Earth’s land area along geographical and climatic gradients. Location The global planetary ecosystem. Methods The 4-year average annual NPP/GPP ratio of the Earth’s land area was calculated using 2000–03 Moderate Resolution Imaging Spectroradiometer (MODIS) data. The global pattern ...

Global Earth Observation System of Systems (GEOSS)

What is requested? The Group on Earth Observations (GEO) was established in July 2003 to begin development of the Global Earth Observation System of Systems (GEOSS). GEO is an international partnership espousing the free exchange of Earth observational data. The US participates in GEO and GEOSS through the Interagency Working Group on Earth Observations (IWGEO), a collection of 15 Federal agenc...