Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA catches the very brief life of Tropical Cyclone Peta

24.01.2013
Infrared data from NASA's Aqua satellite has shown that soon after a low pressure system in northwestern West Australia became Tropical Storm Peta, it made landfall and started to fall apart.

Early on Jan. 22, the Joint Typhoon Warning Center (JTWC) gave System 93S a high chance for development into a tropical depression. At that time, System 93S was located near 19.2S and 120.7E, about 415 nautical miles (477.6 miles/768.6 km) east-northeast of Learmonth, Australia. Satellite imagery showed that the center is consolidating, and bands of thunderstorms had developed, so the Australian Bureau of Meteorology had posted a watch for the coast of Western Australia, from De Grey to Onslow, including Port Hedland and Karratha. By 2100 UTC (4 p.m. EST/U.S.) the low became Tropical Depression 12S in the Southern Indian Ocean.


TRMM revealed that rain was falling at a rate of up to 94 mm (~3.7 inches) per hour near the center of the developing tropical cyclone. A 3-D image constructed from TRMM's PR data showed that some intense storms had tops reaching above 16 km (~9.9 miles).

Credit: NASA/SSAI, Hal Pierce

NASA's Tropical Rainfall Measuring Mission (TRMM) satellite saw tropical storm Peta forming off the coast of Port Hedland, Australia on January 22, 2013 at 1631 UTC (11:31 a.m. EST). Precipitation data from TRMM's Microwave Imager and Precipitation Radar (PR) instruments were coupled with enhanced infrared imagery from TRMM's Visible and InfraRed Scanner (VIRS) at NASA's Goddard Space Flight Center in Greenbelt, Md. to create a full view of Peta's rainfall rates. TRMM revealed that rain was falling at a rate of up to 94 mm (~3.7 inches) per hour near the center of the developing tropical cyclone. A 3-D image constructed from TRMM's PR data showed that some intense storms had tops reaching above 16 km (~9.9 miles).

On Jan. 23 at 0900 UTC, the depression gained strength and became Tropical Storm Peta. Peta moved over land in the Pilbara Coast near Karratha and was still over land by 1500 UTC (10 a.m. EST/U.S.). At that time, Peta was centered near 21.6 south and 117.3 east, about 180 nautical miles (207 miles/333 km) east of Learmonth, Australia. Peta's maximum sustained winds were near 35 knots (40 mph/64.8 kph) and it was moving to the south-southwest at 6 knots (7 mph/11.1 kph).

JTWC noted that radar imagery on Jan. 23 from Dampier, Australia showed the low-level circulation center was becoming increasingly difficult to pinpoint as Peta continued moving over land.

NASA's Aqua satellite passed over Western Australia on Jan. 23 at 0547 UTC (12:47 a.m. EST/U.S.) and the Atmospheric Infrared Sounder (AIRS) instrument gathered temperature data using infrared light. The AIRS data revealed that cloud top temperatures have warmed which indicates the strength in the uplift of air (that helps form thunderstorms) has weakened. The AIRS data also showed that the overall structure of the storm was becoming irregular.

By 1000 UTC (5 a.m. EST/U.S./6 p.m. WST local time, Australia) the Australian Bureau of Meteorology (ABM) noted that Peta had become an ex-tropical cyclone. The center of circulation was inland and just southeast of Karratha. ABM canceled the Cyclone Warning for coastal areas between Port Hedland and Dampier, including Karratha. Although the wind danger has passed, residents along the Pilbara coast may still experience heavy rainfall.

Forecasters at the Joint Typhoon Warning Center expect Peta to re-emerge over the open waters of the Indian Ocean, but do not expect the storm to strengthen. The movement over land and an increase in vertical wind shear has weakened the storm and will cause the storm to dissipate over the ocean.

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov

More articles from Earth Sciences:

nachricht Sediment from Himalayas may have made 2004 Indian Ocean earthquake more severe
26.05.2017 | Oregon State University

nachricht Devils Hole: Ancient Traces of Climate History
24.05.2017 | Universität Innsbruck

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>