The Earth as an extrasolar planet: The vegetation spectral signature today and during the last Quaternary climatic extrema Export

@article{citeulike:4132345, abstract = {The Earth as an extrasolar planet: The vegetation spectral signature today and during the last Quaternary climatic extrema and the Holocene optimum, for which past climatic simulations have been made. By testing the VRE detectability during these extrema when Earth's climate and biomes maps were different from today, we are able to test the vegetation detectability on a terrestrial planet different from our modern Earth. Data from the Biome3.5 model have been associated to visible GOME spectra for each biome and cloud cover to derive Earth's integrated spectra for given Earth phases and observer positions. The VRE is then measured. Results show that the vegetation remains detectable during the last climatic extrema. Compared to current Earth, the Holocene optimum with a greener Sahara slightly increases the mean VRE on one hand, while on the other hand, the large ice cap over the northern Hemisphere during the LGM decreases vegetation detectability. We finally discuss the detectability of the VRE in the context of recently proposed space missions.}, author = {Arnold, L. and Br\'{e}on, F. M. and Brewer, S.}, citeulike-article-id = {4132345}, citeulike-linkout-0 = {http://arxiv.org/PS_cache/arxiv/pdf/0901/0901.1214v1.pdf}, keywords = {biomarker, earth-like, planets}, posted-at = {2009-03-04 17:08:12}, priority = {2}, title = {The Earth as an extrasolar planet: The vegetation spectral signature today and during the last Quaternary climatic extrema}, url = {http://arxiv.org/PS_cache/arxiv/pdf/0901/0901.1214v1.pdf}, year = {2009} }

TY - JOUR ID - citeulike:4132345 L3 - citeulike-article-id:4132345 N2 - The Earth as an extrasolar planet: The vegetation spectral signature today and during the last Quaternary climatic extrema and the Holocene optimum, for which past climatic simulations have been made. By testing the VRE detectability during these extrema when Earth’s climate and biomes maps were different from today, we are able to test the vegetation detectability on a terrestrial planet different from our modern Earth. Data from the Biome3.5 model have been associated to visible GOME spectra for each biome and cloud cover to derive Earth’s integrated spectra for given Earth phases and observer positions. The VRE is then measured. Results show that the vegetation remains detectable during the last climatic extrema. Compared to current Earth, the Holocene optimum with a greener Sahara slightly increases the mean VRE on one hand, while on the other hand, the large ice cap over the northern Hemisphere during the LGM decreases vegetation detectability. We finally discuss the detectability of the VRE in the context of recently proposed space missions. TI - The Earth as an extrasolar planet: The vegetation spectral signature today and during the last Quaternary climatic extrema KW - biomarker KW - earth-like KW - planets AU - Arnold, L AU - Bréon, FM AU - Brewer, S PY - 2009/// UR - http://arxiv.org/PS_cache/arxiv/pdf/0901/0901.1214v1.pdf ER -