HOME >> MEDICINE >> NEWS
Taking apart a hurricane: Multi-sensor Envisat sees through Frances

As its 235-km-per-hour winds passed the Bahamas, Frances was heading for landfall on the Florida coast some time on Saturday, and three quarters of a million Americans are in the process of evacuating their homes. To wait and watch for Frances might be suicidal for human beings, but space-based observers such as Envisat observe its passage without danger. "Because of Envisat's multi-sensor capability, we can slice right through the hurricane with just a single satellite," explained Jos Achache, ESA Director of Earth Observation Programmes.

"Effectively Frances is taken apart for meteorologists to study. The data returned by Envisat includes cloud structure and height at the top of the hurricane, wind and wave fields at the bottom, sea surface temperature and even sea height anomalies indicative of upper ocean thermal conditions that influence its intensity."

Important processes occur at a range of altitudes and locations throughout a hurricane - basically a large powerful storm centred around a zone of extreme low pressure.

Strong low-level surface winds and bands of intense precipitation combine with strong updrafts and outflows of moist air at higher altitudes, with energy released as rainy thunderstorms. Until now, the only reliable source of such high-resolution measurements at different altitudes was from aircraft flown directly through the hurricane.

Envisat carries both optical and radar instruments, enabling researchers to observe high-atmosphere cloud structure and pressure in the visible and infrared spectrum, while at around the same time using radar backscatter to measure roughness of the sea surface and so derive the wind fields just over it.

Those winds converging on the low-pressure eye of the storm are what ultimately determine the spiralling cloud patterns that are characteristic of a hurricane.

Florida-based scientists have begun to take advantage of this unique single-spacecraft combination
'"/>

Contact: Mariangela D'Acunto
mariangela.d'acunto@esa.int
39-06-941-80-856
European Space Agency
3-Sep-2004


Page: 1 2 3 4 5 6

Related medicine news :

1. Taking a number of medications regularly could give you a serious headache
2. Taking pills, even if placebo, predicts better survival in heart failure
3. Taking vitamins to lower amino acid level in blood does not reduce the risk of recurrent stroke
4. Taking vitamin D supplements lowers risk of multiple sclerosis
5. Taking Ecstasy during pregnancy may cause brain damage, behavior problems in babies
6. Taking painkillers during pregnancy increases risk of miscarriage
7. Taking control: Lab testing you order for yourself
8. Taking public health to the streets works
9. Adolescents And Risk-Taking: A Very Likely Danger May Not Mean The Same To A Teen As To An Adult
10. Medical Students Are Taking Risks With HIV During Elective Studies
11. Infants To Seniors: Seven Years Follow-Up Of 1,000 Liver Transplant Patients Taking Tacrolimus Indicates Children Have Best Survival

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/16/2017)... (PRWEB) , ... August 16, 2017 , ... ... practice partnerships through affiliations and de novo development, today announced Cumberland Skin ... , Cumberland Skin Surgery and Dermatology, with offices in both Hermitage and Lebanon, ...
(Date:8/16/2017)... ... August 16, 2017 , ... The ... a three-year grant totaling $975,000, renewing its funding from the Health Resources and ... , This funding marks, the fourth time the HRSA administration has renewed its ...
(Date:8/16/2017)... ... , ... A global leader in the treatment of clubfoot, CURE International ... states—bringing the country one step closer to eliminating clubfoot as a lifelong disability by ... track to enroll 10,000 children in the clubfoot treatment program in this year alone. ...
(Date:8/16/2017)... ... August 16, 2017 , ... Melbourne’s reign as the world’s ... Economist Intelligence Unit’s (EIU) annual Liveability Index. , The Index surveys 140 of the ... began in 2006, Melbourne has consistently come in the top three of the index. ...
(Date:8/16/2017)... , ... August 16, 2017 , ... ... $5.99, eBook, 9781498499620    ) shares that during the time of a cancer diagnosis, surgery ... of God's love, and all the many ways God shows love to those ...
Breaking Medicine News(10 mins):
(Date:7/27/2017)... 2017  West Pharmaceutical Services, Inc. (NYSE: ... second-quarter 2017 and updated financial guidance for the full-year ... Highlights Reported net sales of $397.6 ... quarter. Net sales at constant currency (organic) grew by ... $0.51, compared to $0.60 in the prior-year quarter. Second-quarter ...
(Date:7/26/2017)... Sancilio Pharmaceuticals Company, Inc. (SPCI) today announced ... Altemia TM , an oral therapy for pediatric patients ... (SCD). The SCOT Trial, is a double-blind, placebo-controlled, dose-finding, ... Altemia TM in pediatric patients aged 5-17 years ... "The completion of ...
(Date:7/25/2017)... LAUDERDALE, Fla. , July 25, 2017  Debbie,s Dream Foundation: Curing Stomach ... Luncheon on Monday, September 25, 2017 at the Bonaventure Resort & Spa in ... ... Gendler, DDF Founder and President Debbie Zelman, and Luncheon Committee Co-chair Sabrina Kurzman. ... ...
Breaking Medicine Technology:
Cached News: