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
ACE-FTS observations of acetonitrile in the lower stratosphere Atmospheric Chemistry and Physics DOI 10.5194/acp-13-7405-2013 2 August 2013 This work reports the first infrared satellite remote-sensing measurements of acetonitrile (CH3CN) in the Earth’s atmosphere using solar occultation measurements made by the Atmospheric Chemistry Experiment Fourier transform spectrometer (ACE-FTS) between 2004 and 2011. Read more
A decadal satellite analysis of the origins and impacts of smoke in Colorado Atmospheric Chemistry and Physics DOI 10.5194/acp-13-7429-2013 2 August 2013 We analyze the record of aerosol optical depth (AOD) measured by the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite in combination with surface PM2.5 to investigate the impact of fires on aerosol loading and air quality over Colorado from 2000 to 2012, and to evaluate the contribution of local versus transported smoke. Read more
LGM permafrost distribution: how well can the latest PMIP multi-model ensembles perform reconstruction? Climate of the Past DOI 10.5194/cp-9-1697-2013 1 August 2013 Here, global-scale frozen ground distribution from the Last Glacial Maximum (LGM) has been reconstructed using multi-model ensembles of global climate models, and then compared with evidence-based knowledge and earlier numerical results. Read more
On the effect of orbital forcing on mid-Pliocene climate, vegetation and ice sheets Climate of the Past DOI 10.5194/cp-9-1749-2013 1 August 2013 We present results from modelling of the mid-Pliocene warm period (3.3–3 million years ago) using the Earth system model of intermediate complexity CLIMBER-2 analysing the effect of changes in boundary conditions as well as of orbital forcing on climate. Read more
Clifford algebra-based structure filtering analysis for geophysical vector fields Nonlinear Processes in Geophysics DOI 10.5194/npg-20-563-2013 31 July 2013 A new Clifford algebra-based vector field filtering method, which combines amplitude similarity and direction difference synchronously, is proposed. Read more
MODIS 3 km aerosol product: algorithm and global perspective Atmospheric Measurement Techniques DOI 10.5194/amt-6-1829-2013 31 July 2013 After more than a decade of producing a nominal 10 km aerosol product based on the dark target method, the MODerate resolution Imaging Spectroradiometer (MODIS) aerosol team will be releasing a nominal 3 km product as part of their Collection 6 release. Read more
Carbon farming in hot, dry coastal areas: an option for climate change mitigation Earth System Dynamics DOI 10.5194/esd-4-237-2013 31 July 2013 We present a comprehensive, interdisciplinary project which demonstrates that large-scale plantations of Jatropha curcas – if established in hot, dry coastal areas around the world – could capture 17–25 t of carbon dioxide per hectare per year from the atmosphere (over a 20 yr period). Read more
