Search results
Results From The WOW.Com Content Network
The first continued measurements of the stratosphere were taken by Richard Scherhag in 1951 using radiosondes to take reliable temperature readings in the upper stratosphere (~40 km) and he became the first to observe stratospheric warming on 27 January 1952.
The first is due to the reaction of hydroxyl radicals (•OH) with ozone. •OH is formed by the reaction of electrically excited oxygen atoms produced by ozone photolysis, with water vapor. While the stratosphere is dry, additional water vapor is produced in situ by the photochemical oxidation of methane (CH 4).
The tropospheric polar vortex was first described as early as 1853. [2] The stratospheric vortex's SSWs were discovered in 1952 with radiosonde observations at altitudes higher than 20 km. [ 3 ] The tropospheric polar vortex was mentioned frequently in the news and weather media in the cold North American winter of 2013–2014 , popularizing ...
The long term cooling in the lower stratosphere occurred in two downward steps in temperature both after the transient warming related to explosive volcanic eruptions of El Chichón and Mount Pinatubo, this behavior of the global stratospheric temperature has been attributed to global ozone concentration variation in the two years following ...
Models and observations show that greenhouse gas results in warming of the troposphere, but cooling of the stratosphere. [31] Depletion of the ozone layer by chemical refrigerants stimulated a stratospheric cooling effect. If the Sun was responsible for observed warming, warming of the troposphere at the surface and warming at the top of the ...
Both the UAH dataset and the RSS dataset have shown an overall warming trend since 1998, although the UAH retrieval shows slightly less warming than the RSS. In June 2017, RSS released v4 which significantly increased the trend seen in their data, increasing the difference between RSS and UAH trends.
Such measurements furthered understanding of the greenhouse effect that underlies global warming and climate change. The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first
These layers are the troposphere, stratosphere, mesosphere, and thermosphere. The troposphere is the lowest of the four layers and extends from the surface of the Earth to about 11 km (6.8 mi) into the atmosphere, where the tropopause (the boundary between the troposphere stratosphere) is located. The width of the troposphere can vary depending ...