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Astronauts and Robots 2015: Randall Friedl, JPL

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American Astronautical Society, Astronauts and Robots: Partners in Space Exploration, May 12-13, 2015 - http://astronautical.org/event/astronauts-robots

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Astronauts and Robots 2015: Randall Friedl, JPL

  1. 1. Earth ScienceEarth Science Presentation toPresentation to American Astronautical SocietyAmerican Astronautical Society Conference on Astronauts and Robots: Partners in Space Science and Exploration May 13, 2015May 13, 2015 Randall R. FriedlRandall R. Friedl
  2. 2. Jet Propulsion Laboratory California Institute of Technology "The Earth is a very small stage in a vast cosmic arena. … Our posturings, our imagined self- importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light.“ -- Carl Sagan From "Pale Blue Dot: A Vision of the Human Future in Space," Random House, 1994 View from Voyager View from Mars Space observations provide a new perspective on Earth
  3. 3. Jet Propulsion Laboratory California Institute of Technology Space observations reveal an inter-connected Earth system MISR - aerosols MLS – ozone layer TES – trace gas AIRS – atmospheric temperature CLOUDSAT – water content JASON – sea surface height QUIKSCAT – wind GRACE – gravity Aquarius - sea surface salinity
  4. 4. Jet Propulsion Laboratory California Institute of TechnologySpace observations track Earth transformations Defense Meteorological Satellite Program (DMSP) Operational Linescan System (OLS)
  5. 5. Jet Propulsion Laboratory California Institute of Technology At many spatial scales 1988 Pearl River Delta, China: Landsat false color image Chandler Arizona: Landsat True color image From NASA/USGS
  6. 6. Jet Propulsion Laboratory California Institute of Technology Sea Surface Temperature (left) and Rainfall (Right) anomalies in the Eastern Pacific From NASA’s Earth Observatory based on AVHRR and blended rainfall data from multiple satellites 1997 2007 Example 1: Understanding El Nino, La Nina, and Rainfall Patterns
  7. 7. Jet Propulsion Laboratory California Institute of TechnologyExample 2: Projecting sea level rise Satellite Record From TOPEX/Poseidon And Jason series 3.0 m0.3 m Average Global Sea Level Rise Over the Next 10 Years 100 50 0 %Probability Greenland ice mass loss, from NOAA Arctic Report Card
  8. 8. Jet Propulsion Laboratory California Institute of Technology Example 3: Understanding Arctic sea ice inter-annual processes and longer-term trends 2002 2008 2015 From NASA Earth Observatory Based on SSMI/DMSP data
  9. 9. Jet Propulsion Laboratory California Institute of Technology 1979 1990 2001 2013 From NASA Earth Observatory, based on TOMS/OMI data Example 4: Understanding Antarctic ozone inter-annual processes and longer-term trends
  10. 10. Example 5: Understanding ground waterExample 5: Understanding ground water storage changesstorage changes Landerer, JPL Jet Propulsion Laboratory California Institute of Technology GW SW Groundwater depletion during drought threatens future water security of the Colorado River Basin, (from Castle et al., 2014) Surface and ground water storage anomalies from GRACE data
  11. 11. Jet Propulsion Laboratory California Institute of Technology Example 6: Characterizing Fault Slip and Crustal Motion • Central creeping segment (AA’ to DD’): nonuniform creeping at shallow depth (~0-6km) and partially locked at upper crustal level (~6-10km) • Parkfield segment (EE’ to GG’): creeping at 0-4 km and locked at variable depth range • Increased coupling towards Parkfield and fully locked in 1857 EQ rupture area (HH’ and beyond) (Liu, et al, 2011)

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