Rear Admiral Shahram Irani emphasized that the operational decisions of the Iranian Navy are guided by the precise vision of the Leader of the Islamic Revolution, Ayatollah Seyyed Ali Khamenei.
He announced the establishment of strategic commands in the Pacific, Atlantic, and Indian Oceans, with plans for a permanent deployment in these crucial regions in the near future.
(Jan 29, 2023)
If the world’s propagandizing ‘news’ outlets insist on reporting that Antarctica sea ice is melting in oblivion–which NASA reveals it most certainly isn’t–then they need to come up with a new mechanism to support it, because temperatures, clearly, are playing no part.
(15.4.2016)
Learn how giant airstreams high in the sky get trapped sometimes – leading to devastating weather extremes on the ground. Copyright: Potsdam Institute for Climate Impact Research PIK and Climate Media Factory. This video was supported by the German Research Foundation (DFG) and the German Federal Ministry of Education and Research (BMBF).
(10.06.2019)
(08.06.2019)
The crustaceans and a tardigrade, or ‘water bear’ — all smaller than poppy seeds — were found in Subglacial Lake Mercer, a body of water that had lain undisturbed for thousands of years. Until now, humans had seen the lake only indirectly, through ice-penetrating radar and other remote-sensing techniques. But that changed on 26 December when researchers funded by the US National Science Foundation (NSF) succeeded in melting a narrow portal through the ice to the water below.
Auf der legendären größten Forschungs- und Logistikstation der Vereinigten Staaten von Amerika auf der Ross-Insel an der Küste des McMurdo-Sunds an der Südspitze in der Antarktis kam es am 12.12.2018 zu einem tragischen Unglück.
The Peruvian Army‘s vessel has eight state-of-the-art laboratories to perform scientific research in areas such as hydrography, oceanography, and biotechnology.
The visualization is based on observations from the Gravity field and Ocean Circulation Explorer (GOCE), a European Space Agency (ESA) satellite that operated in orbit from 2009 to 2013. For those four years, the satellite mapped out Earth’s gravity field with unprecedented precision, before it was deliberately destroyed in atmospheric reentry. Since then scientists have combed over its measurements to create maps of Earth’s lithosphere, the tectonically active layer that includes the planet’s crust and outer mantle.
(15.4.2016) Learn how giant airstreams high in the sky get trapped sometimes – leading to devastating weather extremes on the ground. Copyright: Potsdam Institute for Climate Impact Research PIK and Climate Media Factory. This video was supported by the German Research Foundation (DFG) and the German Federal Ministry of Education and Research (BMBF). PIK research on the subject: – Evidence for wave resonance as a key mechanism for generating high-amplitude quasi-stationary waves in boreal Summer
(15.4.2016) Learn how giant airstreams high in the sky get trapped sometimes – leading to devastating weather extremes on the ground. Copyright: Potsdam Institute for Climate Impact Research PIK and Climate Media Factory. This video was supported by the German Research Foundation (DFG) and the German Federal Ministry of Education and Research (BMBF). PIK research on the subject: – Evidence for wave resonance as a key mechanism for generating high-amplitude quasi-stationary waves in boreal Summer
(6.4.2017) Wavenumber-5 consists of five pairs of alternating high- and low-pressure features that encircle the globe about six miles (10 kilometers) above the ground. It is a type of atmospheric phenomenon known as a Rossby wave, a very large-scale planetary wave that can have strong impacts on local weather systems by moving heat and moisture between the tropics and higher latitudes as well as between oceanic and inland areas and by influencing where storms occur.
The slow-moving Rossby waves at times become almost stationary. When they do, the result can be persistent weather patterns that often lead to droughts, floods, and heat waves.
(27.3.2017) for a brief period, from 2011 to 2014, scientists had the unprecedented opportunity to see the Sun‘s entire atmosphere at once. During that time, observations from NASA‘s Solar Dynamics Observatory (SDO), which sits between the Sun and Earth, were supplemented by measurements from NASA‘s Solar TErrestrial RElations Observatory (STEREO) mission, which included two spacecraft orbiting the Sun. Collectively, the three observatories provided a 360-degree view of the Sun until contact was lost with one of the STEREO spacecraft in 2014. McIntosh and his co-authors mined the data collected during the window of full solar coverage to see if the large-scale wave patterns might emerge.
„By combining the data from all three satellites we can see the entire Sun, and that‘s important for studies like this because you want the measurements to all be at the same time,“ said Dean Pesnell, SDO project scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. „They’re pushing the boundary of how we use solar data to understand the interior of the Sun and where the magnetic field of the Sun comes from.“
(6.8.2018) Geospace research has long established that certain changes in the atmosphere are caused by the sun’s radiation, through mechanisms including solar wind, geomagnetic storms, and solar flares. (…)
One of the more scientifically interesting large-scale atmospheric events is called a sudden stratospheric warming (SSW), in which enormous waves in the troposphere — the lowermost layer of the atmosphere in which we live — propagate upward into the stratosphere. These planetary waves are generated by air moving over geological structures such as large mountain ranges; once in the stratosphere, they interact with the polar jet streams.
(15.8.2018) Harvey and her colleagues are still working to understand how the extra water got up there. One possibility involves planetary wave activity in the southern hemisphere which can, ironically, boost the upwelling of water vapor tens of thousands of miles away in the north. The phenomenon could also be linked to solar minimum, now underway. It is notable that the coldest and wettest years in the mesosphere prior to 2018 were 2008-2009–the previous minimum of the 11-year solar cycle.
(25.6.2018) That preliminary study has been revised with new data showing that the coldest sites actually reach -98 degrees Celsius (-144 degrees Fahrenheit). The temperatures are observed during the southern polar night, mostly during July and August.
When the researchers first announced they had found the coldest temperatures on Earth five years ago, they determined that persistent clear skies and light winds are required for temperatures to dip this low. But the new study adds a twist to the story: Not only are clear skies necessary, but the air must also be extremely dry, because water vapor blocks the loss of heat from the snow surface.
Nearly 15 degrees colder than the previous record-breaking coldest temperature, which was -128 degrees in 1983 near the South Pole, the temperature in Antarctica dropped to -144 degrees Fahrenheit.
Temperatures this low make Antarctica „almost like another planet,“ says lead researcher Ted Scambos at the National Snow and Ice Data Center in Boulder, Colorado, quoted in Forbes.
Taking just a few breaths of air this cold would kill you.
(10.8.2018) “Space weather occasionally occurs in tandem with extreme terrestrial weather,” according to scientists from NCEI, Cooperative Institute for Research in Environmental Sciences (CIRES), and other institutions in an open access Space Weather journal article. “When it does, the struggle to mitigate the impacts to life and property can be dramatically intensified. This one-two punch landed on the socioeconomically and technologically diverse communities of the Caribbean islands during the September 2017 hurricane season.”
Mit minus 98,6 Grad ist in der Antarktis ein neuer Kälterekord gemessen worden. Es sei die niedrigste bislang auf der Erdoberfläche gemessene Temperatur, berichten Forscher im Fachmagazin „Geophysical Research Letters“.