NASA study warns of freshwater decline in India
Washington, May 18: Availability of freshwater has declined in the northern and eastern parts of India, says a new study that combined an array of NASA satellite observations of Earth with data on human activities to map locations where freshwater is changing around the globe.
The study, published in the journal Nature, found that Earth's wetland areas are getting more wet and dry areas are getting drier due to a variety of factors, including human water management, climate change and natural cycles.
Areas in northern and eastern India, the Middle East, California and Australia are among the hotspots where overuse of water resources has caused a serious decline in the availability of freshwater, and without corrective actions by the governments to preserve water, the situation is likely to worsen in these areas, the Guardian reported this week citing the study.
The first-of-its-kind study used 14 years of observations from the US/German-led Gravity Recovery and Climate Experiment (GRACE) spacecraft mission to track global trends in freshwater in 34 regions around the world.
"This is the first time that we've used observations from multiple satellites in a thorough assessment of how freshwater availability is changing, everywhere on Earth," said Matt Rodell of NASA's Goddard Space Flight Center in Greenbelt, Maryland,
"A key goal was to distinguish shifts in terrestrial water storage caused by natural variability - wet periods and dry periods associated with El Nino and La Nina, for example - from trends related to climate change or human impacts, like pumping groundwater out of an aquifer faster than it is replenished," Rodell added.
Freshwater is found in lakes, rivers, soil, snow, groundwater and ice. Freshwater loss from the ice sheets at the poles - attributed to climate change - has implications for sea level rise.
On land, freshwater is one of the most essential of Earth's resources, for drinking water and agriculture.
The researchers found that while some regions' water supplies are relatively stable, others experienced increases or decreases.
"What we are witnessing is major hydrologic change," said co-author Jay Famiglietti of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California.
"We see a distinctive pattern of the wet land areas of the world getting wetter - those are the high latitudes and the tropics - and the dry areas in between getting dryer. Embedded within the dry areas we see multiple hotspots resulting from groundwater depletion," Famiglietti warned.
Famiglietti noted that while water loss in some regions, like the melting ice sheets and alpine glaciers, is clearly driven by warming climate, it will require more time and data to determine the driving forces behind other patterns of freshwater change.
However, the GRACE satellite observations alone couldn't tell the researchers what was causing the apparent trends.
"We examined information on precipitation, agriculture and groundwater pumping to find a possible explanation for the trends estimated from GRACE," said co-author Hiroko Beaudoing of Goddard and the University of Maryland in College Park.
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K’taka cabinet approves cricket matches at M. Chinnaswamy stadium: Reports
Belagavi: The state cabinet under the Chairmanship of Chief Minister Siddaramaiah has reportedly given its nod to permit cricket matches at the M. Chinnaswamy Stadium in Bengaluru, subject to certain conditions.
The decision is learnt to have been taken after a meeting held at the Suvarna Vidhana Soudha here on Thursday.
Reports indicate that Home Minister Dr G. Parameshwara has been directed to formulate rules along with a referendum to hold a cricket match at the Chinnaswamy Stadium.
The cabinet’s approval comes subject to conditions, considering the report of Justice D’Cunha, which was prepared after the stampede.
The June 4 stampede during the celebrations for RCB’s maiden IPL title killed 11 people, which raised serious questions over the stadium's capability to host large-scale events.
Will RCB be playing at their home ground next year?
Stating that the “state had learned from the tragedy,” Karnataka Deputy Chief Minister DK Shivakumar on Monday, December 08, dismissed the talks about shifting Royal Challengers Bengaluru’s home games out of the city.
He also said that the Chinnaswamy Stadium is the “pride of Bengaluru and Karnataka” and vowed that IPL fixtures will continue to be played there.
On Wednesday, Shivakumar met the newly elected KSCA president Venkatesh Prasad at the Circuit House in Belagavi and reiterated that cricket matches, including IPL fixtures, will not be shifted out of Bengaluru.
“We have no intention of stopping matches at Chinnaswamy Stadium, but crowd control measures and the Michael D. Cunha committee’s recommendations will be implemented in phases,” he told reporters.
Shivakumar said the government is committed to promoting cricket and supporting fans while safeguarding the state’s reputation, adding that Prasad had sought the government’s cooperation and agreed to work jointly on the issue.
