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Satellite Observations of Climate and Vegetation Water Use over the Sierra Nevada

Satellite Observations of Climate and Vegetation Water Use over the Sierra Nevada. Eric Waller Department of Environmental Science, Policy, and Management University of California, Berkeley SSCZO Annual Meeting Fresno, CA 8/20/13. MODIS Terra, 7-2-1 July 14, 2011. Lake Tahoe.

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Satellite Observations of Climate and Vegetation Water Use over the Sierra Nevada

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  1. Satellite Observations of Climate and Vegetation Water Use over the Sierra Nevada Eric Waller Department of Environmental Science, Policy, and Management University of California, Berkeley SSCZO Annual Meeting Fresno, CA 8/20/13

  2. MODIS Terra, 7-2-1 July 14, 2011 Lake Tahoe Yosemite N.P. San Francisco Kings Canyon N.P. Sequoia N.P. Giant Sequoia Groves Los Angeles

  3. Providence Creek Sites Giant Sequoia Groves April Cloud Frequency: Custom Classification of MODIS Aqua Data (2003-2011)

  4. Questions • Is atmosphere frequently humid, with clouds just a visible manifestation on days of lower temperatures? • Exogenous vs. endogenous moisture?

  5. Other MODIS data indicate: • Low daytime thermal land surface temperature (LST) • AND • Low day vs. night LST contrast (See Figure on next slide) • Particularly in relation to air temperature and vegetation index (e.g., NDVI), respectively • Indicative of particularly well-watered conditions • Atmosphere directly above regularly has high relative humidity

  6. Providence Creek Sites MODIS Aqua Land Surface Temperature Contrast (Day-Night) 6/17/2013

  7. Providence Creek Sites Giant Sequoia Groves April Cloud Frequency: Custom Classification of MODIS Aqua Data (2003-2011)

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