Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

When seen through the lens of technology, few resources are truly scarce; they’re mainly inaccessible. 

 

Peter Diamandis

atmospheric 'rivers' cause many droughts and floods on Earth

RATE THIS! +38
Posted in Science on 5th Nov, 2017 06:06 AM by Alex Muller

Across the globe, water access depends partly upon atmospheric “rivers,” bands of water vapor propelled along jets of air that trace swirling routes above the Earth. These rivers can change weather conditions in an instant. They drop vast amounts of rain in some places, causing a patchwork of flooding and drought.

 

The complete network of atmospheric rivers has generally been poorly understood, though previous research has looked at how sections of this river-network affects specific regions. One 2013 paper, for example, found atmospheric rivers were responsible for days of extreme rainfall in Western Europe which cause flooding.
 
In a new study published in October in Geophysical Research Letters, researchers at NASA’s Jet Propulsion Laboratory attempted to look at the bigger picture by mapping the global network of these aerial streams and the extent of their effect on the planet.
 
“[W]e have found that, globally, a large number of people are exposed to hazards that stem from atmospheric rivers,” Homero Paltan, who led the NASA study, said. “They have a considerable impact that we’re only beginning to understand and measure.”
 
Through modeling, NASA found that rainfall from atmospheric rivers make up 22% of all freshwater flows on Earth, affecting everything from snow packs to soil moisture. In some places they’re responsible for far more; in southeast Asia, New Zealand, and the east and west coasts of North America, upwards of 50% of water flows come from atmospheric river activity.
 
In the places where their influence is strongest, atmospheric rivers increase the likelihood of flooding by 80%, according to the NASA paper. Where they are absent, the incidence of drought may be as much as 90% higher. The researchers estimate that 300 million people annually are exposed to floods and droughts which they wouldn’t have been in the absence of atmospheric rivers.

Tags: EarthNASArainfloodingplanetary scienceresearch

Read original article » Back to category

Comments



 

Recent headlines

  • Posted in Science on 2017-11-20 00:42:21
    Small steps forward as UN climate talks end in Bonn..read more
    Posted in Hardware on 2017-11-20 00:37:56
    US gov should support SpaceX and develop moon bases..read more
    Posted in Business on 2017-11-18 21:15:58
    Companies are realising that renewable energy is good for.....read more
    Posted in Hardware on 2017-11-18 21:07:25
    California may reach 50% renewable power goal by 2020; 10.....read more
    Posted in Hardware on 2017-11-17 18:02:34
    Tesla unveils a truck and a roadster..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Martian landscapes formed from sand 'levitating' on a little.....read more
    Posted by AlexMuller
    Scientists detect comets outside our solar system..read more
    Posted by AlexMuller
    Advanced artificial limbs mapped in the brain..read more
    Posted by AlexMuller
    Bacteria have a sense of touch..read more
    Posted by AlexMuller
    Recurrent brain cancer: New hope with phase 1 clinical trial.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me