Model simulations indicate that 21st century greenhouse warming may lead to greater numbers of very intense Atlantic hurricanes and higher hurricane rainfall rates, but fewer hurricanes overall.
Century-long basin-wide observed records of very intense Atlantic hurricanes are considered unreliable, but tropical storm and hurricane counts have been used as long-term climate indicators. Unadjusted counts of tropical storms show a significant rise from the mid to late 1800s to present, while unadjusted hurricane counts do not, due to the large number of reported hurricanes in the late 1800s.
Analysis of historical ship track records suggests that reporting coverage was likely too sparse to detect all tropical storms, and after adjusting for this bias, tropical storm counts have no significant trend over 1878-2006.
A regional downscaling atmospheric model reproduces the observed rise and year-to-year variability in hurricane counts (1980-2006) remarkably well when forced with observed sea surface temperatures and large-scale atmospheric conditions. According to this model, the ensemble late 21st century climate change projected by current Intergovernmental Panel on Climate Change global models implies reduced numbers of Atlantic hurricanes and tropical storms, due mainly to increased vertical wind shear.
Downscaling experiments with several high resolution models indicate that despite a projected reduction in overall hurricane numbers, the number and intensity of the strongest hurricanes may increase.
As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation
29.03.2017 | University of Hawaii at Manoa
Researchers discover dust plays prominent role in nutrients of mountain forest ecoystems
29.03.2017 | University of Wyoming
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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30.03.2017 | Physics and Astronomy
30.03.2017 | Studies and Analyses
30.03.2017 | Life Sciences