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William Krabill
Movie   ID   Roles   Title
Nearly every spring since 1991, researchers including William Krabill of NASA's Wallops Flight Facility in Wallops Island, Va., have flown on a NASA aircraft over Greenland, collecting measurements of ice thickness from an altitude of about 2,000 feet. Now, on March 30, Krabill and colleagures return to collect updated measurements. This time, however, the mission is set to be more extensive than ever before, and takes place with new urgency. Radars and lasers new to the Greenland flights will be tested and calibrated with meaturements currently made from the Ice, Cloud, and land Elevation Satellite (ICESat). Launched in January 2003, ICESat is already more than six years beyond its three-year design lifetime and should it come to an end, the NASA aircraft will be ready to bridge the gap until the launch of ICESat-II, planned for launch no earlier than 2014.<p><p><p>For complete transcript, click <a href='/vis/a010000/a010400/a010414/GreenlandIceFlights_transcript.htm'>here</a>.   10414 Scientist
  Greenland Ice Flights
SeaWiFS Biosphere data symbolizing the heartbeat of our planet.   2395 Scientist
  Pulse of the Planet
Short Pan to west coast area of significant ice decrease   1292 Scientist
  Greenland: Pan to West Coast Area of Interest
Zoom in to east coast central area of interest   1293 Scientist
  Greenland: Short Pan to East Coast Area of Interest
Airplane collecting ice thickness data over Greenland   580 Scientist
  Greenland: Airplane Animation Revealing Ice Change
Animation of flight paths over Greenland showing ice thickness change data from the Airborne Topographic Mapper   581 Scientist
  Greenland: Raw Data Flight Paths Showing Ice Change
One flight path over Greenland, colored using ice thickness change data from the Airborne Topographic Mapper   582 Scientist
  Greenland: Single Flight Path Showing Ice Change
Flight paths showing ice thickness changes as measured by the Airborne Topographic Mapper   583 Scientist
  Greenland: Multiple Flight Paths Showing Ice Change
A pan around Greenland showing changes in ice thickness from 1993-1994 to 1998-1999 as measured by the Airborne Topographic Mapper   584 Scientist
  Greenland: Ice Change
Zoom-down to Greenland's east coast   585 Scientist
  Greenland: East Coast Zoom-down without Ice Data
Zoom-down to the east coast of Greenland showing changes in ice thickness from 1993-1994 to 1998-1999 as measured by the Airborne Topographic Mapper   586 Scientist
  Greenland: East Coast Zoom-down with Ice Data
Greenland without ice change data   587 Scientist
  Greenland: East Coast Zoom-out without Ice Data
Zoom-out from the east coast of Greenland showing changes in ice thickness from 1993-1994 to 1998-1999 as measured by the Airborne Topographic Mapper   588 Scientist
  Greenland: East Coast Zoom-out with Ice Data
Airborne laser altimetry data of the beach near Montara, California in 1997   624 Scientist
  Beach Erosion: Eastward View of Beach Near Montara, California
Photograph of the northern shore of Montara, California, dated April 1998. (Photograph courtesy of the USGS.)   625 Scientist
  Supporting Photographs for Montara Beach Erosion from 1997 to 1998
Airborne laser altimetry data of the beach near Montara, California in 1998   627 Scientist
  Beach Erosion: Top Down View of Beach Near Montara, California in 1998
Airborne laser altimetry data of the beach near Montara, California in 1997   628 Scientist
  Beach Erosion: Southeastward View of Beach Near Montara, California
Visualization from airborne laser altimetry data of the beach near Montara, California in 1997   630 Scientist
  Beach Erosion: Southward View of Beach Near Montara, California in 1997
Airborne laser altimetry data of the beach near Montara, California in 1998   633 Scientist
  Beach Erosion: Northward View of Beach Near Montara, California in 1998
A pan around the beach at Montara, California from laser altimetry data taken in 1997. The pan pauses at several locations to match still frames rendered for a 1998 data set showing significant beach erosion. Match-framed to stills found in animations #624, 627, 628, 630, and 633.   634 Scientist
  Beach Erosion: Pan Around Montara, California in 1997
Visualization from airborne laser altimetry data of Esplanade Drive in Pacifica, California in 1998   636 Scientist
  Beach Erosion: Eastward View of Esplanade Drive in 1998
Visualization from airborne laser altimetry data of Esplanade Drive in Pacifica, California in 1998   638 Scientist
  Beach Erosion: Top Down View of Esplanade Drive in 1998
Visualization from airborne laser altimetry data of Esplanade Drive in Pacifica, California in 1998   640 Scientist
  Beach Erosion: Southeastward View of Esplanade Drive in 1998
Visualization from airborne laser altimetry data of Esplanade Drive in Pacifica, California in 1998   642 Scientist
  Beach Erosion: Southern View of Esplanade Drive in 1998
Visualization from airborne laser altimetry data of Esplanade Drive in Pacifica, California in 1998   644 Scientist
  Beach Erosion: Northeastward View of Esplanade Drive in 1998
Visualization of 1997 Esplanade Drive looking eastward   645 Scientist
  Beach Erosion: Esplanade Drive in Pacifica, California from 1997 to 1998


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