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#wateruse

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💧🌏 Greg Cocks

NASA Satellites Reveal Abrupt Drop In Global Freshwater Levels | An Abrupt Decline in Global Terrestrial Water Storage and Its Relationship with Sea Level Change
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phys.org/news/2024-11-nasa-sat <-- shared technical article
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doi.org/10.1007/s10712-024-098 <-- shared paper
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unesco.org/reports/wwdr/en/202 <-- shared UN report on water stress
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#GIS #spatial #mapping #remotesensing #satellite #NASA #GRACE #ERA5 #water #waterresources #climatechange #sealevel #sealevelrise #SLR #waterresources #global #freshwater #watermanagement #arid #terrestrial #mascons #TWS #terrestialwaterstorage #surfacewater #groundwater #aquifers #spatialanalysis #model #modeling #spatiotemporal #drought #wateruse #watersecurity #agriculture #irrigation #hydrology #publichealth #risk #hazard #naturalresources #waterquality #gravity

a Time series of near-global (60° S–70° N) mean SST anomalies, Niño 3.4 (black), the Pacific Decadal Oscillation (PDO) index with 1-year smoothing (blue), and a North Atlantic tripole index (brown). Negative PDO corresponds to anomalous positive SSTs in the central N. Pacific. b Near-global ERA5 SST trend, 1980–2022, °C/yr. c Correlation between the Niño 3.4 index and GRACE/FO d(TWS)/dt, the latter lagged 2 months with 4-month smoothing applied. d Correlation between the PDO index and GRACE/FO TWS, 3-month smoothing applied
Map of mascons in which the GRACE/FO era minimum terrestrial water storage occurred after the start of 2015, color coded for the year of that minimum. The time series plotted in Fig. 2 is averaged over the South American region delineated in red
Comparison of ERA5-Land, GRACE/FO, and complementary observations: a deseasonalized time series of global land average (60S-70N) TWS anomalies (mm) from GRACE/FO, ERA5-Land, and ERA5 vertically integrated moisture flux convergence, b ERA5-Land precipitation (P), evapotranspiration (ET), and runoff (RO), c same as b but for GPCP P, GLEAM ET and G-RUN RO. Units in b and c are mm d−1, d 2003–2022 trend in ERA5-Land P-ET, e Same as d but for GPCP v3.2 P—GLEAM 3.6a ET. Units in d and e are mm d−1/yr. All anomalies are relative to the 2003–2022 monthly resolved climatological mean
TWS trends (mm/yr) over the period 2003–2022 in a GRACE/FO and b ERA5-Land; and c correlations of monthly TWS anomalies between GRACE/FO and ERA5-Land. Ice sheets and areas of significant glacial extent have been masked
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