Infrared data gathered on the tropical low pressure area known as System 92L gave forecasters a hint that the low would become the Atlantic Ocean hurricane season's second tropical depression.
NASA's Aqua satellite passed over System 92L on July 21 at 11:53 a.m. EDT and the Atmospheric Infrared Sounder (AIRS) instrument gathered infrared data on the developing low pressure area.
This false-colored infrared image on July 21 at 11:53 a.m. EDT from NASA's Aqua satellite shows some high, cold (purple) thunderstorm cloud tops in the low that became Tropical Depression 2.
Image Credit: NASA JPL, Ed Olsen
The infrared data shows temperature, and AIRS data showed some areas of very cold cloud top temperatures, exceeding the threshold of -63F/-52C that indicates cloud tops near the top of the troposphere.
Those cloud top temperatures are also indicative of strong uplift (of air) and powerful thunderstorms. Soon after the AIRS data was taken the low that became Tropical Depression 2.
At 11 a.m. EDT (1500 UTC) on July 222, the center of Tropical Depression Two (TD2) was located near latitude 12.6 north and longitude 48.0 west, about 910 miles (1,465 km) east of the Lesser Antilles.
Tropical Depression Two had maximum sustained winds near 35 mph (55 kph) but the National Hurricane Center (NHC) expects little change in strength over the next 24 hours.
The depression is moving toward the west near 17 mph (28 kph) and that general motion is expected to continue for the next couple of days. The estimated minimum central pressure is 1012 millibars.
The NHC noted that Tropical Depression 2 will be moving through an environment of dry air and increasing vertical wind shear that will not favor strengthening.
In fact, NHC forecasters expect that TD2 may weaken to a remnant low by Wednesday, July 23, and degenerate into a trough (elongated area) of low pressure on Thursday.
Text credit: Rob Gutro
NASA's Goddard Space Flight Center
Rob Gutro | Eurek Alert!
Marine carbon sinking rates confirm importance of polar oceans
26.07.2016 | University of Washington
Oceans may be large, overlooked source of hydrogen gas
21.07.2016 | Duke University
Transparent electronics devices are present in today’s thin film displays, solar cells, and touchscreens. The future will bring flexible versions of such devices. Their production requires printable materials that are transparent and remain highly conductive even when deformed. Researchers at INM – Leibniz Institute for New Materials have combined a new self-assembling nano ink with an imprint process to create flexible conductive grids with a resolution below one micrometer.
To print the grids, an ink of gold nanowires is applied to a substrate. A structured stamp is pressed on the substrate and forces the ink into a pattern. “The...
A new Fraunhofer MEVIS method conveys medical interrelationships quickly and intuitively with innovative visualization technology
On the monitor, a brain spins slowly and can be examined from every angle. Suddenly, some sections start glowing, first on the side and then the entire back of...
Researchers at the U.S. Department of Energy's (DOE) Ames Laboratory have discovered an unusual property of purple bronze that may point to new ways to achieve high temperature superconductivity.
While studying purple bronze, a molybdenum oxide, researchers discovered an unconventional charge density wave on its surface.
Munich Physicists have developed a novel electron microscope that can visualize electromagnetic fields oscillating at frequencies of billions of cycles per second.
Temporally varying electromagnetic fields are the driving force behind the whole of electronics. Their polarities can change at mind-bogglingly fast rates, and...
Breakup of continents with two speed: Continents initially stretch very slowly along the future splitting zone, but then move apart very quickly before the onset of rupture. The final speed can be up to 20 times faster than in the first, slow extension phase.phases
Present-day continents were shaped hundreds of millions of years ago as the supercontinent Pangaea broke apart. Derived from Pangaea’s main fragments Gondwana...
15.07.2016 | Event News
15.07.2016 | Event News
11.07.2016 | Event News
26.07.2016 | Information Technology
26.07.2016 | Health and Medicine
26.07.2016 | Physics and Astronomy