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Terrestrial climate variability and seasonality changes in the Mediterranean region between 15 000 and 4000 years BP deduced from marine pollen records
Terrestrial climate marine pollen records seasonality changes
2009/12/3
Pollen-based climate reconstructions were performed on two high-resolution pollen marines cores from the Alboran and Aegean Seas in order to unravel the climatic variability in the coastal settings of...
Changes in atmospheric variability in a glacial climate and the impacts on proxy data：a model intercomparison
atmospheric variability model intercomparison glacial climate
2009/12/3
Using four different climate models, we investigate sea level pressure variability in the extratropical North Atlantic in the preindustrial climate (1750 AD) and at the Last Glacial Maximum (LGM, 21 k...
Late Glacial and Holocene changes in vegetation cover and climate in southern Siberia derived from a 15 kyr long pollen record from Lake Kotokel
Late Glacial vegetation cover Holocene changes
2009/12/3
In this study a radiocarbon-dated pollen record from Lake Kotokel (52°47´ N, 108°07´ E, 458 m a.s.l.) located in southern Siberia east of Lake Baikal was used to derive quantitative ch...
Generation of free convection due to changes of the local circulation system
free convection local circulation system
2009/11/19
Eddy-covariance and Sodar/RASS experimental measurement data of the COPS (Convective and Orographically-induced Precipitation Study) field campaign 2007 are used to investigate the generation of near-...
The effect of nonlinearity in CO2 heating rates on the attribution of stratospheric ozone and temperature changes
CO2 heating rates stratospheric ozone temperature changes
2009/11/19
An analysis of the attribution of past and future changes in stratospheric ozone and temperature to anthropogenic forcings is presented. The analysis is an extension of the study of Shepherd and Jonss...
Use of a mobile laboratory to evaluate changes in on-road air pollutants during the Beijing 2008 Summer Olympics
on-road air pollutants Beijing 2008 Summer Olympics
2009/11/19
China implemented systematic air pollution control measures during the 2008 Beijing Summer Olympics and Paralympics to improve air quality. This study used a versatile mobile laboratory to conduct in ...
Changes of Warmer Winter and Winter Temperature over China During 1956-2005
warmer winter index winter temperature interdecadal variation
2009/8/28
A reasonable warmer winter index (IWWI) in the framework of the three equiprobability categories (i.e. warmer, normal and colder categories) is proposed based on the winter temperature data observed ...
Changes in Torrential Rain Days in Ningxia Under Climate Warming
climate change torrential rain days atmospheric circulation formation mechanism Ningxia
2009/8/28
By using the summer torrential rain days data in Ningxia, the Yinchuan sounding data and the NCEP/NCAR reanalyzed data, the evolutional characteristics and the cause of torrential rain days in Ningxia...
Effect of regional precursor emission controls on long-range ozone transport – Part 1: Short-term changes in ozone air quality
regional precursor emission controls long-range ozone transport ozone air quality
2009/8/25
Observations and models demonstrate that ozone and its precursors can be transported between continents and across oceans. We model the influences of 10% reductions in anthropogenic nitrogen oxide (NO...
Long-term changes in UT/LS ozone between the late 1970s and the 1990s deduced from the GASP and MOZAIC aircraft programs and from ozonesondes
UT/LS ozone GASP MOZAIC aircraft programs ozonesondes
2009/8/7
We present ozone measurements of the Global Atmospheric Sampling Program (GASP) performed from four commercial and one research aircraft in the late 1970s to compare them with respective measurements ...
Impacts of aerosol-cloud interactions on past and future changes in tropospheric composition
aerosol-cloud interactions tropospheric composition
2009/6/23
The development of effective emissions control policies that are beneficial to both climate and air quality requires a detailed understanding of all the feedbacks in the atmospheric composition and cl...
The effects of global changes upon regional ozone pollution in the United States
global changes regional ozone pollution United States
2009/3/13
A comprehensive numerical modeling framework was developed to estimate the effects of collective global changes upon ozone pollution in the US in 2050. The framework consists of the global climate and...
Attribution of projected changes in summertime US ozone and PM2.5 concentrations to global changes
projected changes summertime US ozone PM2.5 concentrations global changes
2009/3/13
The impact that changes in future climate, anthropogenic US emissions, background tropospheric composition, and land-use have on summertime regional US ozone and PM2.5 concentrations is examined throu...
An exploration of ozone changes and their radiative forcing prior to the chlorofluorocarbon era
ozone changes radiative forcing chlorofluorocarbon era
2009/3/12
Using historical observations and model simulations, we investigate ozone trends prior to the mid-1970s onset of halogen-induced ozone depletion. Though measurements are quite limited, an analysis bas...
Sensitivity studies of oxidative changes in the troposphere in 2100 using the GISS GCM
oxidative changes troposphere GISS GCM
2009/3/11
We examine the relative importance of chemical precursor emissions affecting ozone (O3) and hydroxyl (OH) for the year 2100. Runs were developed from the Comparison of Tropospheric Oxidants (Ox_Comp) ...