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Consistent increase in Indian monsoon rainfall and its variability across CMIP-5 models

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.

Quantitative evaluation of emission controls on primary and secondary organic aerosol sources during Beijing 2008 Olympics

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 PM_2.5 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.

Editorial: The publication of geoscientific model developments v1.0

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.

Absorptivity of brown carbon in fresh and photo-chemically aged biomass-burning emissions

Experiments were conducted to investigate light absorption of organic aerosol in fresh and photo-chemically aged biomass-burning emissions.

ACE-FTS observations of acetonitrile in the lower stratosphere

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.

A decadal satellite analysis of the origins and impacts of smoke in Colorado

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 PM_2.5 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.

LGM permafrost distribution: how well can the latest PMIP multi-model ensembles perform reconstruction?

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.

On the effect of orbital forcing on mid-Pliocene climate, vegetation and ice sheets

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.

Clifford algebra-based structure filtering analysis for geophysical vector fields

A new Clifford algebra-based vector field filtering method, which combines amplitude similarity and direction difference synchronously, is proposed.

MODIS 3 km aerosol product: algorithm and global perspective

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.

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