Microphysical properties and high ice water content in continental and oceanic mesoscale convective systems and potential implications for commercial aircraft at flight altitude Atmospheric Chemistry and Physics DOI 10.5194/acp-14-899-2014 27 January 2014 Two complementary case studies are conducted to analyse convective system properties in the region where strong cloud-top lidar backscatter anomalies are observed as reported by Platt et al. (2011). Read more
Regional variability of acidification in the Arctic: a sea of contrasts Biogeosciences DOI 10.5194/bg-11-293-2014 23 January 2014 In this study, we use an ocean-only general circulation model, with embedded biogeochemistry and a comprehensive description of the ocean carbon cycle, to study the response of pH and saturation states of calcite and aragonite to rising atmospheric pCO2and changing climate in the Arctic Ocean. Read more
Weathering by tree-root-associating fungi diminishes under simulated Cenozoic atmospheric CO2decline Biogeosciences DOI 10.5194/bg-11-321-2014 23 January 2014 We report experimental evidence for a negative feedback across a declining Cenozoic [CO2]a range from 1500 to 200 ppm, whereby low [CO2]a curtails mineral surface alteration via trenching and etch pitting by arbuscular mycorrhizal (AM) and ectomycorrhizal (EM) fungal partners of tree roots. Read more
Ensemble projections of future streamflow droughts in Europe Hydrology and Earth System Sciences DOI 10.5194/hess-18-85-2014 9 January 2014 This paper addresses the issue of future developments in streamflow drought characteristics across Europe. Read more
Seabed topography beneath Larsen C Ice Shelf from seismic soundings The Cryosphere DOI 10.5194/tc-8-1-2014 2 January 2014 Seismic reflection soundings of ice thickness and seabed depth were acquired on the Larsen C Ice Shelf in order to test a sub-ice shelf bathymetry model derived from the inversion of IceBridge gravity data. Read more
The surface temperatures of Earth: steps towards integrated understanding of variability and change Geoscientific Instrumentation, Methods and Data Systems DOI 10.5194/gi-2-305-2013 18 December 2013 In a community-based activity in June 2012, the EarthTemp Network brought together 55 researchers from five continents to improve the interaction between scientific communities who focus on surface temperature in particular domains, to exploit the strengths of different observing systems and to better meet the needs of different communities. Read more
Quantifying mesoscale soil moisture with the cosmic-ray rover Hydrology and Earth System Sciences DOI 10.5194/hess-17-5097-2013 17 December 2013 This paper explores the challenges and opportunities for mapping soil moisture over large areas using the cosmic-ray rover. Read more
Statistical analysis to characterize transport of nutrients in groundwater near an abandoned feedlot Hydrology and Earth System Sciences DOI 10.5194/hess-17-4897-2013 6 December 2013 Surface water from a lagoon and groundwater samples from 17 wells within and near an abandoned feedlot in northwestern Minnesota, USA, were analyzed for carbon, nutrients, and field parameters. Read more
A simple explanation for the sensitivity of the hydrologic cycle to surface temperature and solar radiation and its implications for global climate change Earth System Dynamics DOI 10.5194/esd-4-455-2013 5 December 2013 The global hydrologic cycle is likely to increase in strength with global warming, although some studies indicate that warming due to solar absorption may result in a different sensitivity than warming due to an elevated greenhouse effect. Here we show that these sensitivities of the hydrologic cycle can be derived analytically from an extremely simple surface energy balance model that is constrained by the assumption that vertical convective exchange within the atmosphere operates at the thermodynamic limit of maximum power. Read more
Seasonal variations of sea–air CO2 fluxes in the largest tropical marginal sea (South China Sea) based on multiple-year underway measurements Biogeosciences DOI 10.5194/bg-10-7775-2013 29 November 2013 Based upon 14 field surveys conducted between 2003 and 2008, this paper shows that the seasonal pattern of sea surface partial pressure of CO2 (pCO2) and sea–air CO2 fluxes differed among four different physical–biogeochemical domains in the South China Sea proper. Read more
