Navigation Links
Super storm tracked by European Space Agency water mission
Date:11/9/2012

When millions of people are bracing themselves for the onslaught of extreme weather, as much information as possible is needed to predict the strength of the impending storm. ESA's SMOS mission again showed its versatility by capturing unique measurements of Hurricane Sandy.

As its name suggests, the Soil Moisture and Ocean Salinity (SMOS) satellite was designed to measure how much moisture is held in soil and how much salt is held in the surface waters of the oceans.

This information is helping to improve our understanding of the water cycle an essential component of the Earth system.

However, this state-of-the-art Earth Explorer mission has demonstrated that its instrumentation and measuring techniques can be used to offer much more.

Since SMOS has the ability to see through clouds and it is little affected by rain, it can also provide reliable estimates of the surface wind speeds under intense storms.

Parts of the Caribbean and northeastern US are still suffering the aftermath of Hurricane Sandy, which is the largest Atlantic hurricane on record.

Unusually, Sandy was a hybrid storm, tapping energy from the evaporation of seawater like a hurricane and from different air temperatures like a winter storm. These conditions generated a super storm that spanned an incredible 1800 km.

As it orbited above, the satellite intercepted parts of Hurricane Sandy at least eight times as the storm swept over Jamaica and Cuba around 25 October, until its landfall in New Jersey, US, four days later.

The data from these encounters have been used to estimate the speed of the wind over the ocean's surface.

SMOS carries a novel microwave sensor to capture images of 'brightness temperature'. These images correspond to radiation emitted from the surface of Earth, which are then used to derive information on soil moisture and ocean salinity.

Strong winds over oceans whip up waves and whitecaps, which in turn affect the microwave radiation being emitted from the surface. This means that although strong storms make it difficult to measure salinity, the changes in emitted radiation can, however, be linked directly to the strength of the wind over the sea.

This method of measuring surface wind speeds was developed by scientists at the French Research Institute for Exploration of the Sea and Collect Localisation Satellites, CLS, within ESA's Earth Observation Support to Science Element programme.

The method was originally used during Hurricane Igor in 2010, but has again proven accurate. During Hurricane Sandy, SMOS data compare well with realtime measurements from meteorological buoys as the super storm passed between the coast of the US and the Bermuda Islands.

Moreover, NOAA's Hurricane Research Division flew a P-3 aircraft seven times into Hurricane Sandy to gather measurements of surface wind speeds, rain and other meteorological parameters. One of these airborne campaigns coincided with an overpass of the satellite.

Keeping in mind the significantly differing sampling characteristics between the SMOS radiometer and the aircraft sensor, there was excellent agreement in the measurements. Both instruments consistently detected a wind band 150 km south of the hurricane eye, with a speed of just over 100 km/h.

Being able to measure ocean surface wind in stormy conditions with the synoptic and frequent coverage of SMOS is paramount for tracking and forecasting hurricane strength.

Although ESA's Earth Explorers are developed to address specific scientific issues, they continue to demonstrate their versatility.


'/>"/>

Contact: Robert Meisner
robert.meisner@esa.int
European Space Agency
Source:Eurekalert  

Related medicine news :

1. Cardiac bypass surgery superior to non-surgical procedure for adults with diabetes and heart disease
2. For Many, Superstorm Sandy Could Take Toll on Mental Health
3. Study shows PFO closure may be superior to medical therapy in preventing stroke
4. Superpowered Bacteria May Lurk Behind Sinus Infections
5. Super-Shy Preschoolers Might Struggle Academically
6. Adelaide joins with Italy to develop super spaghetti
7. In war with superbugs, Cedars-Sinai researchers see new weapon: Immune-boosting vitamin
8. Controlling superconductors with light
9. Canadians super-sizing Canadas Food Guide servings: York University study
10. NYC Ban on Super-Sized Sodas Would Cut Consumers Calories: Study
11. Residents as Good as Fully Trained Docs if Properly Supervised: Study
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Super storm tracked by European Space Agency water mission
(Date:10/12/2017)... ... October 12, 2017 , ... ... in post-acute health care, have expanded their existing home health joint venture through ... AccentCare has been operating a joint venture home health company with Asante, delivering ...
(Date:10/12/2017)... ... October 12, 2017 , ... Dr. Parsa Mohebi, the Los ... article to the newly revamped Cosmetic Town journal section, featuring articles ... procedure known as Follicular Unit Extraction (FUE). , Dr. Mohebi says ...
(Date:10/12/2017)... ... 12, 2017 , ... Leading pediatric oncology experts at Children’s National Health ... Congress of the International Society of Paediatric Oncology (SIOP) Oct. 12-15. Chaired ... Cancer and Blood Disorders at Children’s National, and Stephen P. Hunger, M.D., Chief ...
(Date:10/12/2017)... ... October 12, 2017 , ... Women-owned and ... 2017 Best and Brightest in Wellness® by Best and Brightest. OnSite Wellness will ... Friday, Oct. 20 from 7:30 a.m. to 2 p.m. at the Henry Autograph ...
(Date:10/12/2017)... ... , ... In the United States, single-family home owners pay ... York, New Jersey, Massachusetts, Texas, Virginia, Connecticut, and California—the average is $7,000 a ... rates, which contributes to the relatively lower cost of living in places like ...
Breaking Medicine News(10 mins):
(Date:10/12/2017)... Divoti USA will engrave and process all non-coated stainless ... FDA requirements, which stipulates new criteria regarding medical device manufacture and ... ID jewelry such as Medical ID Bracelets, can rest assured that ... the new FDA requirements . ... Divoti offers this dark mark fiber laser engraving process with ...
(Date:10/11/2017)... FRISCO, Texas , Oct. 11, 2017 /PRNewswire/ ... healthcare services, has amplified its effort during National ... patients about hereditary cancer risks. ... Journal of Clinical Oncology calculated that more than ... to have inherited mutations in BRCA1 or BRCA2 and ...
(Date:10/7/2017)... IRVING, Texas , Oct. 6, 2017   ... industry with more than $100 billion in purchasing power, ... industry news and information. The Newsroom is ... chain and industry trends, infographics, expert bios, news releases, ... Besides having access to a wealth of resources at ...
Breaking Medicine Technology: