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The Earth Observer: May - Jun, 2015

Volume 27, Issue 3

In This Issue

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  • Editor’s Corner Front Cover
  • Feature Articles
  • Seeing is Believing: EOSDIS Worldview Helps Lower Barriers for NASA Earth-Observing Data Discovery and Analysis4
  • NASA Celebrates 45th Earth Day in the Nation’s Capital9
  • Meeting/Workshop Summaries
  • The Second Gregory G. Leptoukh Online Giovanni Workshop14
  • Landsat Science Team Meeting: Winter 201519
  • 2014 GRACE Science Team Meeting24
  • ECOSTRESS Science Team Meeting28
  • In The News
  • NASA Soil Moisture Mission Produces First Global Maps30
  • NASA’s ISS-RapidScat Wind Data Proving Valuable for Tropical Cyclones32
  • NASA, USGS Begin Work on Landsat 9 to Continue Land Imaging Legacy34
  • Mount St. Helens 35 Years After Eruption35
  • Regular Features
  • NASA Earth Science in the News 36
  • NASA Science Mission Directorate – Science Education and Public Outreach Update 38
  • Science Calendars 39

Editor’s Corner

Steve Platnick
EOS Senior Project Scientist

The Tropical Rainfall Measuring Mission (TRMM), a joint mission between NASA and JAXA to study rainfall for weather and climate research, was launched in November 1997, with a design lifetime of three years. TRMM officially came to an end on April 8, 2015 (see; the spacecraft is expected to reenter the Earth’s atmosphere in mid-June. TRMM became a fixture over the global tropics, producing over 17 years of valuable scientific data. TRMM carried five instruments: a three-sensor rainfall suite consisting of the Precipitation Radar (PR), TRMM Microwave Imager (TMI), and Visible and Infrared Scanner (VIRS); and two related instruments, the Lightning Imaging Sensor (LIS) and Clouds and Earth’s Radiant Energy System (CERES). Its unique 17-year dataset of global tropical rainfall and lightning became the space-based standard for...