One of the instruments that flies aboard NASA's Aqua satellite looks at tropical cyclones using infrared light. In a comparison of infrared data from June 3 and 4, images show that Hurricane Blanca had weakened and became less organized.
The Atmospheric Infrared Sounder or AIRS instrument that flies aboard NASA's Aqua satellite measured cloud top temperatures in Blanca on June 3 at 20:17 UTC (4:23 p.m. EDT) when maximum sustained winds were near 140 mph (220 kph) with higher gusts. At the time, Blanca was a category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale. The AIRS data showed a concentrated ring of powerful thunderstorms around a pinhole eye. Because infrared data measures temperature, AIRS saw that cloud top temperatures in the thunderstorms surrounding the tiny eye were as cold as -81.6F/-63.1C.
When Aqua passed over Blanca the following day, June 4 at 08:36 UTC (4:36 a.m. EDT) AIRS captured more information about the structure and cloud top temperatures. That satellite overpass showed that the bands of thunderstorms spiraling into the center had become fragmented and the pinhole eye that was visible on June 3 had disappeared from the AIRS image on June 4. At the time of the image, Blanca's maximum sustained winds had dropped to 125 mph (205 kph). The 4 a.m. EDT discussion from the National Hurricane Center (NHC) noted "It is not clear whether the slight decrease in wind speed is a result of an eyewall replacement cycle, drier air wrapping into the circulation, or upwelling of cooler waters beneath the nearly stationary hurricane."
At 08:29 UTC (4:29 a.m. EDT), the VIIRS or Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard NASA-NOAA's Suomi satellite captured an infrared night-time picture of Hurricane Blanca several hundred miles west of the Mexican coast. The VIIRS image showed what appeared to be a cloud-filled eye and confirmed the bands of thunderstorms wrapping into it had become more fragmented.
On June 4, in the 11 a.m. EDT discussion, the NHC noted that "It appears that the combination of upwelling and an eyewall replacement cycle has resulted in significant weakening of Blanca during the past 18 hours or so. The eye is not as clear as it was yesterday, and the deep convection is no longer symmetric around what is left of the eye."
Blanca is close enough to land to cause dangerous ocean swells. The National Hurricane Center cautioned that swells generated by Blanca will likely affect portions of the coast of southwestern Mexico during the next couple of days. These swells are likely to cause life-threatening surf and rip current conditions.
At 11 a.m. EDT (1500 UTC), the center of Hurricane Blanca was located near latitude 12.3 North, longitude 105.1 West. That places the center of Blanca about 465 miles (750 km) south of Manzanillo, Mexico, and about 795 miles (1,285 km) south-southeast of Cabo San Lucas.
Maximum sustained winds have decreased to near 110 mph (175 kph) with higher gusts. Blanca is moving toward the northwest near 3 mph (6 kph), and this general motion with an increase in forward speed is expected during the next 48 hours.
NHC noted that Blanca is forecast to re-strengthen some during the next 48 hours before starting to weaken again when it runs into increasing shear and cool waters as the storm approaches the Baja California peninsula. For the latest forecast updates, visit: http://www.
Rob Gutro | EurekAlert!
GPM sees deadly tornadic storms moving through US Southeast
01.12.2016 | NASA/Goddard Space Flight Center
Cyclic change within magma reservoirs significantly affects the explosivity of volcanic eruptions
30.11.2016 | Johannes Gutenberg-Universität Mainz
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy