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:8/31/2020)... ... August 31, 2020 , ... Dr. ... with persons with autism and other developmental disabilities, as well as supporting staff ... education, adolescents with autism, school consultation, and staff development. She joined the company ...
(Date:8/29/2020)... ... ... When professor and author Randy Pausch was diagnosed with pancreatic cancer, he ... become melancholic, however, he put together a final lecture in Carnegie Hall in which ... negative situation and turned it into something that inspired millions of people worldwide. This ...
(Date:8/28/2020)... ... 28, 2020 , ... WHAT , Hespiro™ is a new ... conditions, including COVID-19, while reducing the need for scarce mechanical ventilators. It not ... and scrubs it free of carbon dioxide in a completely closed “rebreather” system, ...
(Date:8/28/2020)... (PRWEB) , ... August 28, 2020 , ... ... The Nourished Group set out to continue helping the specialty-diet community connect ... discover new gluten-free products, get coupons, enter giveaways, chat with brands & watch ...
(Date:8/28/2020)... ... August 28, 2020 , ... Ziegler, a specialty ... its investment in Synchronous Health, a tech-enabled behavioral health and well-being solutions provider. ... human empathy with artificial intelligence (AI) to increase access and quality of behavioral ...
Breaking Medicine News(10 mins):
(Date:8/28/2020)... SAN ANTONIO (PRWEB) , ... August 28, 2020 ... ... company and operator of primary care medical centers in Florida and San Antonio ... ambassador for its South Texas medical centers. , In this capacity he will ...
(Date:8/27/2020)... (PRWEB) , ... August 27, 2020 , ... ... coordination software, today announced the successful completion of their 2020 System and Organizational ... as their HITRUST® interim assessment and MARS-E compliance assessment. These achievements reflect their ...
(Date:8/27/2020)... (PRWEB) , ... August 27, 2020 , ... Bleep LLC, ... player and sleep apnea patient, is the company’s new spokesperson. , “In my line ... field. So, when I found the Bleep DreamPort it was a Bleeping no brainer ...
Breaking Medicine Technology:
Cached News: