WebA Morning Glory cloud is a roll cloud, or arcus cloud, that can be up to 1,000 kilometres (620 mi) long, [2] 1 to 2 kilometres (0.62 to 1.24 mi) high, often only 100 to 200 metres (330 to 660 ft) above the ground. The cloud often travels at the rate of 10 to 20 metres per second. [3] Sometimes there is only one cloud, sometimes there are up to ... Web14 de fev. de 2024 · Paul Crutzen and Frank Arnold proposed that the polar stratospheric clouds could be made of nitric acid trihydrate, which would explain the clouds’ presence at an altitude and temperature that should not have been cold enough for the tiny amount of pure water vapor present in the stratosphere to condense.
Polar Stratospheric Cloud - an overview ScienceDirect Topics
Polar stratospheric clouds (PSCs) are clouds in the winter polar stratosphere at altitudes of 15,000–25,000 m (49,000–82,000 ft). They are best observed during civil twilight, when the Sun is between 1 and 6 degrees below the horizon, as well as in winter and in more northerly latitudes. One main type of PSC is … Ver mais The stratosphere is very dry; unlike the troposphere, it rarely allows clouds to form. In the extreme cold of the polar winter, however, stratospheric clouds of different types may form, which are classified according … Ver mais • Aurora • Circumhorizontal arc • Cloud iridescence • Noctilucent clouds Ver mais PSCs are classified into two main types each of which consists of several sub-types • Type I clouds have a generally stratiform appearance … Ver mais Research • Nacreous Clouds at atoptics.co.uk • Polar Stratospheric Clouds Above Spitsbergen at Alfred Wegener Institute News reports • Ver mais WebPolar stratospheric clouds (PSCs) are formed in the polar ozone layer when winter minimum temperatures fall below the formation temperature of about −78°C. This occurs … fitness app to compete with friends
Stratosphere - Wikipedia
WebNon-vertical clouds in the middle level are prefixed by the alto. At any latitude, these clouds are formed as low as 2000 m (6500 ft) above the surface. These clouds can be formed as high as 4,000 m (13,000 ft) near the poles. These clouds are formed at an altitude of 7,600 m (25,000 ft) in the tropical region. WebUpper atmospheric clouds. Clouds visible in the upper atmosphere include polar stratospheric clouds, which form in the stratosphere between about 15 km (50 000 ft) … WebA Morning Glory cloud is a roll cloud, or arcus cloud, that can be up to 1,000 kilometres (620 mi) long, [2] 1 to 2 kilometres (0.62 to 1.24 mi) high, often only 100 to 200 metres … can i accept birth certificate as id