Featured Research

from universities, journals, and other organizations

Satellites Observe Amazon Basin Water Storage And Runoff

Date:
May 31, 2009
Source:
American Geophysical Union
Summary:
Scientists would like to better understand the physical processes in Amazon hydrological systems. To explore the water storage and dynamics in the Amazon basin, researchers have used data from the two Gravity Recovery and Climate Experiment (GRACE) satellites, which measure mass distribution on Earth's surface through instantaneous measurements of the changes in the distance between the satellites.

Scientists would like to better understand the physical processes in Amazon hydrological systems.

To explore the water storage and dynamics in the Amazon basin, a team of researchers used four years of data from the two Gravity Recovery and Climate Experiment (GRACE) satellites, which measure mass distribution on Earth's surface through instantaneous measurements of the changes in the distance between the satellites. Water stored in the Amazon basin affects mass distribution and thus can be monitored by the GRACE satellites.

Reporting in a recent issue of Geophysical Research Letters, the authors (Han et al.) found that soil water explains about half of the observed changes in intersatellite distance; surface and subsurface runoff explains the rest. By comparing river runoff routing simulations with GRACE data for the Amazon region, the authors found that the overall effective runoff velocity for the entire Amazon basin was about 30 centimeters per second (about one foot per second), with significant seasonal variation.

They conclude that incorporating GRACE data can help improve routing schemes in large-scale land surface models.

The team included scientists from NASA's Goddard Space Flight Center, the University of Maryland, the University of Tokyo, the Korea Polar Research Institute, and Ohio State University.


Story Source:

The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.


Journal Reference:

  1. Han, S.-C., H. Kim, I.-Y. Yeo, P. Yeh, T. Oki, K.-W. Seo, D. Alsdorf, and S. B. Luthcke. Dynamics of surface water storage in the Amazon inferred from measurements of inter-satellite distance change. Geophysical Research Letters, 2009; 36 (9): L09403 DOI: 10.1029/2009GL037910

Cite This Page:

American Geophysical Union. "Satellites Observe Amazon Basin Water Storage And Runoff." ScienceDaily. ScienceDaily, 31 May 2009. <www.sciencedaily.com/releases/2009/05/090529135720.htm>.
American Geophysical Union. (2009, May 31). Satellites Observe Amazon Basin Water Storage And Runoff. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2009/05/090529135720.htm
American Geophysical Union. "Satellites Observe Amazon Basin Water Storage And Runoff." ScienceDaily. www.sciencedaily.com/releases/2009/05/090529135720.htm (accessed July 23, 2014).

Share This




More Earth & Climate News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Orleans Plans to Recycle Cigarette Butts

New Orleans Plans to Recycle Cigarette Butts

AP (July 21, 2014) New Orleans is the first U.S. city to participate in a large-scale recycling effort for cigarette butts. The city is rolling out dozens of containers for smokers to use when they discard their butts. (July 21) Video provided by AP
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
Spectacular Lightning Storm Hits London

Spectacular Lightning Storm Hits London

AFP (July 19, 2014) A spectaCular lightning storm struck the UK overnight Friday. Images of lightning strikes over the Shard and Tower Bridge in central London. Duration: 00:23 Video provided by AFP
Powered by NewsLook.com
A Centuries' Old British Tradition Is Far from a Swan Song

A Centuries' Old British Tradition Is Far from a Swan Song

AFP (July 19, 2014) As if it weren't enough that the Queen is the Sovereign of the UK and 15 other Commonwealth realms, she is also the owner of all Britain's unmarked swans. Duration: 02:18 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins