using nasa satellite and modeling resources for monitoring groundwater availability and variability...
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Using NASA Satellite and Modeling Resources for Monitoring Groundwater Availability and Variability
John D. Bolten Hydrological Sciences Lab
NASA Goddard Space Flight Center Greenbelt, MD
Observations from NASA’s Gravity Recovery and Climate Experiment (GRACE) mission provide estimates of terrestrial water storage variability (the sum of groundwater, soil water, surface water, snow, and ice).
Changes in Annual-Mean Terrestrial Water Storage Between 2009 and 2010
Source: Matt Rodell, NASA GSFC
Identifying Areas of Water Stress and Replenishment
Water Storage Anomalies in Northwestern India
cm
-6
-4
-2
0
2
4
6
8
Jan
-02
May
-02
Sep
-02
Jan
-03
May
-03
Sep
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Jan
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May
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Jan
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May
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Sep
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Jan
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May
-06
Wat
er S
tora
ge
(cm
)
Observed Groundwater
GRACE GroundwaterMississippi River basin
Illinois
When combined with a numerical model (top) or in situ observations (bottom), groundwater can be isolated from GRACE terrestrial water storage observations.
GRACE groundwater estimate
Groundwater well observations
GRACE groundwater estimates (smoothed)Rodell et al., Hydrogeology, 2006
Yeh et al., WRR, 2006
Quantifying Changes in Soil Water Storage is Essential for Sustainable Water Management
Source: Matt Rodell, NASA GSFC
JPL Airborne Radar Sounder for High-Resolution Mapping of Shallow Aquifers
Aircraft - based radar provides high-resolution mapping of the regional distribution of shallow aquifers in the hyper-arid areas.
Source: Essam Heggy, JPL
Instrument1. Short pulse sounding radar (< 20 ns) at 40 and
75 MHz center frequencies2. 20 and 40 MHz bandwidths at 40 and 75 MHz3. Multiple antennas4. Platform: Kuwait police Dauphin helicopter and
Kuwait Air Force P3
NASA Points of Contact
• John Bolten - NASA GSFC ([email protected])• Matt Rodell - NASA GSFC ([email protected])• Essam Heggy - NASA JPL ([email protected])