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Imminent ocean acidification in the Arctic projected with the NCAR global coupled carbon cycle-climate model
(2009)BiogeosciencesOcean acidification from the uptake of anthropogenic carbon is simulated for the industrial period and IPCC SRES emission scenarios A2 and B1 with a global coupled carbon cycle-climate model. Earlier studies identified seawater saturation state with respect to aragonite, a mineral phase of calcium carbonate, as a key variable governing impacts on corals and other shell-forming organisms. Globally in the A2 scenario, water saturated by ...Journal Article -
Measurement of CP Violation in Stop Cascade Decays at the LHC
(2009)The European Physical Journal CWe study the potential observation at the LHC of CP-violating effects in stop production and subsequent cascade decays, gg→t~it~i , t~i→tχ~0j , χ~0j→χ~01ℓ+ℓ− , within the Minimal Supersymmetric Standard Model. We study T-odd asymmetries based on triple products between the different decay products. There may be a large CP asymmetry at the parton level, but there is a significant dilution at the hadronic level after integrating over the ...Journal Article -
Biodiversity for multifunctional grasslands: Equal productivity in high-diversity low-input and low-diversity high-input systems
(2009)BiogeosciencesModern grassland management seeks to provide many ecosystem services and experimental studies in resource-poor grasslands have shown a positive relationship between plant species richness and a variety of ecosystem functions. Thus, increasing species richness might help to enhance multifunctionality in managed grasslands if the relationship between species richness and ecosystem functioning is equally valid in high-input grassland systems. ...Journal Article -
The role of ocean transport in the uptake of anthropogenic CO2
(2009)BiogeosciencesWe compare modeled oceanic carbon uptake in response to pulse CO2 emissions using a suite of global ocean models and Earth system models. In response to a CO2 pulse emission of 590 Pg C (corresponding to an instantaneous doubling of atmospheric CO2 from 278 to 556 ppm), the fraction of CO2 emitted that is absorbed by the ocean is: 37±8%, 56±10%, and 81±4% (model mean ±2σ ) in year 30, 100, and 1000 after the emission pulse, respectively. ...Journal Article -
Observation of the hadronic final state charge asymmetry in high Q2 deep-inelastic scattering at HERA
(2009)Physics Letters BA first measurement is presented of the charge asymmetry in the hadronic final state from the hard interaction in deep-inelastic ep neutral current scattering at HERA. The measurement is performed in the range of negative squared four momentum transfer 100 < Q 2 < 8000 GeV 2. The difference between the event normalised distributions of the scaled momentum, x p, for positively and negatively charged particles, measured in the current region ...Journal Article -
Water availability, demand and reliability of in situ water harvesting in smallholder rain-fed agriculture in the Thukela River Basin, South Africa
(2009)Hydrology and Earth System SciencesWater productivity in smallholder rain-fed agriculture is of key interest for improved food and livelihood security. A frequently advocated approach to enhance water productivity is to adopt water harvesting and conservation technologies (WH). This study estimates water availability for potential in situ WH, and supplemental water demand (SWD) in smallholder agriculture in South Africa's Thukela River Basin (29 000 km2, mean annual ...Journal Article -
Simulating past droughts and associated building damages in France
(2009)Hydrology and Earth System SciencesDroughts can induce important building damages due to shrinking and swelling of soils, leading to costs as large as for floods in some regions. Previous studies have focused on damage data analysis, geological or constructional aspects. Here, a study investigating the climatic aspects of soil subsidence damage is presented for the first time. We develop a simple model to examine if the meteorology has a considerable impact on the interannual ...Journal Article -
Inclusive photoproduction of ρ0, K*0 and ϕ mesons at HERA
(2009)Physics Letters BInclusive non-diffractive photoproduction of ρ (770) 0, K * (892) 0 and φ{symbol} (1020) mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding average γp centre-of-mass energy is 210 GeV. The mesons are measured in the transverse momentum range 0.5 < p T < 7 GeV and the rapidity range | y lab | < 1. Differential cross sections are presented as a function of transverse momentum and rapidity, and are compared ...Journal Article -
The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c
(2009)The European Physical Journal CThe response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth of information, especially at low energies. The analysis of the differences in calorimeter ...Journal Article -
Evaluation of a probabilistic hydrometeorological forecast system
(2009)Hydrology and Earth System SciencesMedium range hydrological forecasts in mesoscale catchments are only possible with the use of hydrological models driven by meteorological forecasts, which in particular contribute quantitative precipitation forecasts (QPF). QPFs are accompanied by large uncertainties, especially for longer lead times, which are propagated within the hydrometeorological model system. To deal with this limitation of predictability, a probabilistic forecasting ...Journal Article