Leadership Instincts: Need to Create Safe Homes and Safe Neighborhoods  |  Health Monitor: Ayurveda Medicines for Treating Lifestyle Diseases  |  Education Information: India sent Lakhs of Students to US in 2018-19, Second Largest after China  |  Policy Indications: National Policy on Biofuels  |  Technology Inceptions: Asus unveils dual-screen laptop series  |  Teacher Insights: Social hardship harms language skills  |  Science Innovations: Strong storms can generate quake-like seismic activity  |  Parent Interventions: Community care system benefits youth  |  National Edu News: Interdisciplinary Centre for Energy Research launched  |  Education Information: SCHOOL EDUCATION QUALITY INDEX  |  Health Monitor: ‘Health System for a New India: Building Blocks–—Potential Pathways to Reform’  |  Policy Indications: WCD Ministry to announce Bharatiya Poshan Krishi Kosh  |  Science Innovations: Dr. Harsh Vardhan calls for Developing Innovative Cooling Solutions  |  Policy Indications: Rashtrapati Bhavan to Host Conference of Directors of IITS,NITS and IIEST 19 Nov  |  Policy Indications: PM proposes first meeting of BRICS Water Ministers in India  |  
November 16, 2017 Thursday 03:30:32 PM IST

NASA tool predicts which cities face floods

Science Innovations

New York: NASA scientists have developed a tool to forecast which cities are vulnerbale to flooding due to melting of ice in a warming climate. It looks at the Earth's spin and gravitational effects to predict how water will be "redistributed" globally, BBC reported.

"This provides, for each city, a picture of which glaciers, ice sheets, (and) ice caps are of specific importance," the researchers were quoted as saying. The research, detailed in the journal Science Advances, could provide scientists a way to determine which ice sheets they should be "most worried about".

The researchers explained that as land ice is lost to the oceans, both the Earth's gravitational and rotational potentials are perturbed, resulting in strong spatial patterns in sea-level rise (SLR). The pattern of sea-level change has been termed sea-level fingerprints. 

"We lack robust forecasting models for future ice changes, which diminishes our ability to use these fingerprints to accurately predict local sea-level (LSL) changes," the researchers said. So they set out to determine the exact gradient of sea-level fingerprints with respect to local variations in the ice thickness of all of the world's ice drainage systems. 


"By exhaustively mapping these fingerprint gradients, we form a new diagnosis tool, henceforth referred to as gradient fingerprint mapping (GFM), that readily allows for improved assessments of future coastal inundation or emergence," the study said. 

The researchers demonstrated that for Antarctica and Greenland, changes in the predictions of inundation at major port cities depend on the location of the drainage system. 

For example, in London, local sea-level changes is significantly affected by changes on the western part of the Greenland ice sheet, whereas in New York, such changes are greatly sensitive to changes in the northeastern portions of the ice sheet, the tool showed.


Comments