On Monday, November 30, by 4 a.m. ET, Nida had lost her "Super Typhoon" status as a result of wind shear, and is now a typhoon. Nida's maximum sustained winds are near 115 mph (100 knots). The storm was over open ocean in the Western Pacific, about 330 miles south-southwest of the island of Iwo To (formerly Iwo Jima), near 19.6 North and 139.1 East. It was crawling to the west-northwest near 3 mph (2 knots), so the forecast track has become more difficult to predict.
Tropical storm force winds extend 150 miles from the center, so the storm is about 300 miles in diameter. Typhoon-force winds extend out to 55 miles from the center. Nida is kicking up 35-foot high waves in the open ocean.
NASA's CloudSat satellite's Cloud Profiling Radar captured a side look across Nida on Nov. 28. Nida's clouds are over 15 kilometers or 9 miles high. CloudSat also noticed ice in throughout all of Nida's cloud tops, indicating strong, high, thunderstorms. CloudSat also noted heavy rainfall over some of the areas where Nida meets the ocean's surface, more than 30mm/hr (1.18 inches/hour). CloudSat also provided an estimate of winds and atmospheric pressure at the time of the overpass on November 28 and clocked the wind around 140 knots and the minimum central pressure around 918 millibars.
NASA's Aqua satellite also passed over Nida on November 28 and captured infrared and microwave imagery using its Atmospheric Infrared Sounder (AIRS). The data from AIRS is also used to create an accurate 3-D map of atmospheric temperature, water vapor and clouds, all of which are helpful to forecasters. The AIRS image clearly showed Nida's eye, and strong, cold thunderstorm cloud tops, colder than -63 Fahrenheit (220 degrees Kelvin) circling the eye.
The infrared signal of the AIRS instrument does not penetrate through clouds. Where there are no clouds the AIRS instrument reads the infrared signal from the ocean and land surfaces, revealing warmer temperatures in orange and red. The orange temperatures are 80F (300 degrees Kelvin) or greater (the darker they are, the warmer they are), and tropical cyclones need sea surface temperatures of 80F to strengthen and maintain their strength.
The Joint Typhoon Warning Center is the organization responsible for forecasts of typhoons in that region, and their latest discussion noted that Nida is weakening as it continues to crawl in a northerly direction.
Rob Gutro | EurekAlert!
In times of climate change: What a lake’s colour can tell about its condition
21.09.2017 | Leibniz-Institut für Gewässerökologie und Binnenfischerei (IGB)
Did marine sponges trigger the ‘Cambrian explosion’ through ‘ecosystem engineering’?
21.09.2017 | Helmholtz-Zentrum Potsdam - Deutsches GeoForschungsZentrum GFZ
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
A warming planet
Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
22.09.2017 | Life Sciences
22.09.2017 | Medical Engineering
22.09.2017 | Physics and Astronomy