Sentences with phrase «cirrus cloud cover»

Chemically, there will be an increase in ozone depletion (due to increases in heterogeneous surface chemistry in the stratosphere), increases in acid rain, possibly an increase in high cirrus cloud cover due to indirect effects of the sulphates on cloud lifetime.

Eleftheratos, K., C.S. Zerefos, P. Zanis, D.S. Balis, G. Tselioudis, K. Gierens, and R. Sausen, 2007: A study on natural and manmade global interannual fluctuations of cirrus cloud cover for the period 1984 - 2004.

Stordahl, F., G. Myhre, E.J.G. Stordal, W.B. Rossow, D.S. Lee, D.W. Arlander, and T. Svendby, 2005: Is there a trend in cirrus cloud cover due to aircraft traffic?

Chemically, there will be an increase in ozone depletion (due to increases in heterogenous surface chemistry in the stratosphere), increases in acid rain, possibly an increase in high cirrus cloud cover due to indirect effects of the sulphates on cloud lifetime.

A more recent report from NASA documented a 1 percent per decade increase in cirrus cloud cover over the United States, presumably due to increased air travel.

They found that in the central Pacific region when the sea surface temperature rises there is less cirrus cloud cover and thus more energy radiates out into space.

Rather than magnifying whatever warming takes place, the response of tropical cirrus cloud cover is to reduce it.

Every model assumes that tropical - region cirrus cloud cover, which has a net warming effect on surface temperatures, increases with increasing surface temperature — a positive feedback.

Not exact matches

The premise of Lindzen's hypothesis was that as the climate warms, the area in the atmosphere covered by high cirrus clouds will contract to allow more heat to escape into outer space, similar to the iris in a human eye contracting to allow less light to pass through the pupil in a brightly lit environment.

The meeting will mainly cover the following themes, but can include other topics related to understanding and modelling the atmosphere: ● Surface drag and momentum transport: orographic drag, convective momentum transport ● Processes relevant for polar prediction: stable boundary layers, mixed - phase clouds ● Shallow and deep convection: stochasticity, scale - awareness, organization, grey zone issues ● Clouds and circulation feedbacks: boundary - layer clouds, CFMIP, cirrus ● Microphysics and aerosol - cloud interactions: microphysical observations, parameterization, process studies on aerosol - cloud interactions ● Radiation: circulation coupling; interaction between radiation and clouds ● Land - atmosphere interactions: Role of land processes (snow, soil moisture, soil temperature, and vegetation) in sub-seasonal to seasonal (S2S) prediction ● Physics - dynamics coupling: numerical methods, scale - separation and grey - zone, thermodynamic consistency ● Next generation model development: the challenge of exascale, dynamical core developments, regional refinement, super-parametrization ● High Impact and Extreme Weather: role of convective scale models; ensembles; relevant challenges for model development

Regarding clouds, recent trends suggest a slight decline in total cloud cover over several decades, due to a reduction in low clouds, which exert a net cooling influence, while high cirrus clouds, which are net warmers, have remained relatively constant.