|
|
 |
US-WEATHER-DROUGHT-FILES
(FILES)This September 23, 2014 file photo shows a vehicle as it raises a large dust cloud as it drives on a parched farm field in Los Banos as a severe drought continues to affect California. California needs 11 trillion gallons (42 cubic kilometers) of water to recover from its three-year drought, the US space agency said December 16, 2014 after studying water resources by using satellite data. The first of its kind calculation of how much groundwater is needed to end a drought was led by Jay Famiglietti of NASA's Jet Propulsion Laboratory in Pasadena, California and was based on observations from NASA's Gravity Recovery and Climate Experiment (GRACE) satellites. "Spaceborne and airborne measurements of Earth's changing shape, surface height and gravity field now allow us to measure and analyze key features of droughts better than ever before, including determining precisely when they begin and end and what their magnitude is at any moment in time," Famiglietti said. "That's an incredible advance and something that would be impossible using only ground-based observations." AFP PHOTO/Mark RALSTON
|
|
|
|
Detalii fotografie |
| Loc: |
|
Los Banos, California, UNITED STATES |
|
| Sursa: |
|
AFP / Mediafax Foto |
|
| Fotograf: |
|
MARK RALSTON |
|
| Data: |
|
16 Decembrie 2014 |
|
| Dimensiuni: |
|
3627 x 2554 (1.28 MB) |
|
|
|
|
|
|