Sentences with word «tropospheric»

In regards to Michael Jankowski's comment (# 11), the Fu et al. (2004, Nature) article showed that the satellite record of tropospheric temperature trends, based on the Microwave Sounding Unit channel 2, is contaminated by stratospheric cooling on the order of -0.08 K / decade.

How can the atmospheric sciences community facilitate access to ozone metrics necessary for quantifying the impact of tropospheric ozone on human health, crop and ecosystem productivity and climate?

In terms of atmospheric chemistry, a strong consensus was reached for the first time that science could predict the changes in tropospheric ozone in response to scenarios for CH4 and the indirect greenhouse gases (CO, NOx, VOC) and that a quantitative GWP for CO could be reported.

I was curious about the tropical upper tropospheric trend, so I plotted this for my own satisfaction: (Something I urge everyone to do)

BTW, I don't think anyone has found the tropical upper tropospheric hot spot predicted by all models yet.

Excellent post with several significant points, but still a focus on tropospheric temperatures as «validation» for the models is a very weak argument.

So other then the «Slugs» of warmer tropospheric water vapor CH4's contribution is miniscule.

about Comprehensive study of emission source contributions for tropospheric ozone formation over East Asia

Isaac — Among unsettled issues is the change in upper tropospheric humidity with warming — specific humdity increases, but there is conflicting information as to whether this increase is sufficient to maintain a near - constant relative humidity (RH — e.g. Minschwaner and Dessler 2004 as compared with Soden et al 2005).

The metric of using only sensible tropospheric heat for measuring the entire climate sensitivity needs to be examined and updated as the science evolves.

We consider this to be an overestimate, because it implies a 20th century increase in global tropospheric water content which substantially exceeds observations (Section 2.5.3.2).

The myopic focus on sensible tropospheric heat as a proxy for AGW has proven its severe shortcomings.

That doens» t affect the equilibrium increase in the upward flux at TRPP in response, though it may change how much of that is absorbed by the stratosphere (perhaps a reduction due to shielding of water vapor and CO2 wings in the stratosphere by increased tropospheric water vapor (as it would by an increase in clouds, particularly higher clouds)-- PS feedbacks also change the baseline spectral flux in the vicinity of the CO2 band.

But with tropospheric aerosols you have a very short residence time — roughly two weeks.

Konrad; Could you please give me a direct yes or no answer to the following question — Do you believe that strong vertical tropospheric convective circulation would continue without radiative gases?

They don't take into account local forcing agents such as tropospheric ozone or black carbon.

Only two of the fourteen stations, one in Japan and one in Europe, had statistically significant increases in tropospheric O3 between 1980 and 1995.

A space - based Doppler wind lidar (DWL) would provide accurate, global tropospheric wind data for both climate studies and weather forecasting.

Shindell, D.T., G. Faluvegi, and N. Bell, 2003: Preindustrial - to - present - day radiative forcing by tropospheric ozone from improved simulations with the GISS chemistry - climate GCM.

As a little example Rapp quotes him saying the context of satellite tropospheric temps: «if the influence of the prominent El - Nino of 1998 were ignored, the globally averaged temperature of the atmosphere would display a cooling trend».

The spectra I have calculated there seem quite reasonable, although I'm not sure his use of a constant tropospheric lapse rate, especially in the tropics, is completely justified.

Since 1979, it is likely that there is slightly greater warming in the troposphere than at the surface, although uncertainties remain in observed tropospheric warming trends and whether these are greater or less than the surface trend.

A recent TV broadcast featured a scientist from the Institute for Tropospheric Research in Leipzig whose contract can not be renewed.

«Thorne et al. ended with the conclusion that «there is no reasonable evidence of a fundamental disagreement between tropospheric temperature trends from models and observations when uncertainties in both are treated comprehensively».»

The effect of climate change on tropospheric chemistry has been investigated in several studies.

UAH published data showing significantly lower tropospheric cooling from 1979 till 1998, contradicting the warming trend observed by the surface stations.

Easter specializes in modeling tropospheric aerosols and trace gases and their interactions with clouds and precipitation.

Hood and his references show a very strong link between varying solar EUV / FUV and stratospheric influence on tropospheric climate.

The range (due to different data sets) of the global mean tropospheric temperature trend since 1979 is 0.12 °C to 0.19 °C per decade based on satellite - based estimates (Chapter 3) compared to a range of 0.16 °C to 0.18 °C per decade for the global surface warming.

Composite analysis of stratospheric warming events identifies regional tropospheric precursors, which precede stratospheric warmings.

An atmosphere without radiative gases will not exhibit strong vertical tropospheric convective circulation.