Black carbon in the Arctic: the underestimated role of gas flaring and residential combustion emissions Atmospheric Chemistry and Physics DOI 10.5194/acp-13-8833-2013 5 September 2013 Chemistry transport models and climate chemistry models struggle to reproduce the Arctic Haze phenomenon, and this has recently prompted changes in aerosol removal schemes to remedy the modeling problems. In this paper, we show that shortcomings in current emission data sets are at least as important. Read more
The magnitude and causes of uncertainty in global model simulations of cloud condensation nuclei Atmospheric Chemistry and Physics DOI 10.5194/acp-13-8879-2013 5 September 2013 Here we perform a variance-based analysis of a global 3-D aerosol microphysics model to quantify the magnitude and leading causes of parametric uncertainty in model-estimated present-day concentrations of cloud condensation nuclei. Read more
Global CO2 fluxes estimated from GOSAT retrievals of total column CO2 Atmospheric Chemistry and Physics DOI 10.5194/acp-13-8695-2013 3 September 2013 This paper presents one of the first estimates of the global distribution of CO2surface fluxes using total column CO2 measurements retrieved by the SRON-KIT RemoTeC algorithm from the Greenhouse gases Observing SATellite (GOSAT). Read more
Gravitational separation in the stratosphere – a new indicator of atmospheric circulation Atmospheric Chemistry and Physics DOI 10.5194/acp-13-8787-2013 3 September 2013 The O2/N2 ratio observed in the middle stratosphere, corrected for gravitational separation, showed the same mean air age as estimated from the CO2 mole fraction. Therefore, gravitational separation is usable as a new indicator of changes in the atmospheric circulation in the stratosphere. Read more
North–south palaeohydrological contrasts in the central Mediterranean during the Holocene: tentative synthesis and working hypotheses Climate of the Past DOI 10.5194/cp-9-2043-2013 2 September 2013 On the basis of a multi-proxy approach and a strategy combining lacustrine and marine records along a north–south transect, data collected in the central Mediterranean within the framework of a collaborative project have led to reconstruction of high-resolution and well-dated palaeohydrological records and to assessment of their spatial and temporal coherency. Read more
Climate response to imposed solar radiation reductions in high latitudes Earth System Dynamics DOI 10.5194/esd-4-301-2013 2 September 2013 The results of this paper suggest that, until emissions reductions are sufficient to limit the warming influence of increasing greenhouse gas concentrations, polar reductions in solar radiation, if they could be efficiently and effectively implemented, warrant further research as an approach to moderating the early stages of both high-latitude and global warming. Read more
Consistent increase in Indian monsoon rainfall and its variability across CMIP-5 models Earth System Dynamics DOI 10.5194/esd-4-287-2013 28 August 2013 The possibility of an impact of global warming on the Indian monsoon is of critical importance for the large population of this region. Future projections within the Coupled Model Intercomparison Project Phase 3 (CMIP-3) showed a wide range of trends with varying magnitude and sign across models. Here the Indian summer monsoon rainfall is evaluated in 20 CMIP-5 models for the period 1850 to 2100. Read more
Quantitative evaluation of emission controls on primary and secondary organic aerosol sources during Beijing 2008 Olympics Atmospheric Chemistry and Physics DOI 10.5194/acp-13-8303-2013 22 August 2013 To assess the primary and secondary sources of fine organic aerosols after the aggressive implementation of air pollution controls during the 2008 Beijing Olympic Games, 12 h PM2.5 values were measured at an urban site at Peking University (PKU) and an upwind rural site at Yufa during the CAREBEIJING-2008 (Campaigns of Air quality REsearch in BEIJING and surrounding region) summer field campaign. Read more
Editorial: The publication of geoscientific model developments v1.0 Geoscientific Model Development DOI 10.5194/gmd-6-1233-2013 14 August 2013 In this editorial, GMD Executive Editors assess the lessons learned over the first few years of the journal’s life, and describe some changes to GMD’s editorial policy, which will ensure that the models and model developments are published in such a way that they are of maximum value to the community. Read more
Absorptivity of brown carbon in fresh and photo-chemically aged biomass-burning emissions Atmospheric Chemistry and Physics DOI 10.5194/acp-13-7683-2013 9 August 2013 Experiments were conducted to investigate light absorption of organic aerosol in fresh and photo-chemically aged biomass-burning emissions. Read more
