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Short-term variations of three rock glaciers and their relationship with meteorological conditions
(2015)Earth Surface Dynamics DiscussionsIn recent years, strong variations in the speed of rock glaciers have been detected,raising questions about their stability in a changed climate. In this study, we present continuous time series over three years of surface velocities of six GPS stations located on three rock glaciers in Switzerland. Intra-annual velocity variations are analyzed in relation to local meteorological factors, such as precipitation, snow(melt), as well as air ...Working Paper -
Differential climate impacts for policy-relevant limits to global warming: the case of 1.5° C and 2° C
(2015)Earth System Dynamics DiscussionsRobust appraisals of climate impacts at different levels of global-mean temperature increase are vital to guide assessments of dangerous anthropogenic interference with the climate system. Currently, two such levels are discussed in the context of the international climate negotiations as long-term global temperature goals: a below 2◦C and a 1.5◦C limit in global-mean temperature rise above ...Working Paper -
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Validation of farm-scale methane emissions using nocturnal boudary layer budgets
(2015)Atmospheric Chemistry and Physics DiscussionsWorking Paper -
Effects of record length and resolution on the derived distribution of annual precipitation
(2015)Hydrology and Earth System Sciences DiscussionsTraditional frequency analysis of annual precipitation requires the fitting of a proba-bility model to yearly precipitation totals. There are three potential problems with thisapproach: a long record (at least 25∼30 years) is required in order to fit the model,years with missing data cannot be used, and the data need to be homogeneous. To overcome these limitations, we test an alternative methodology proposed by Eagleson(1978), based on ...Working Paper -
First on-line isotopic characterization of N2O emitted from intensively managed grassland
(2015)Biogeosciences DiscussionsThe analysis of the four main isotopic N2O species (14N14N16O, 14N15N16O, 15N14N16O, 14N14N18O) and especially the intramolecular distribution of 15N ("site preference", SP) has been suggested as a tool to distinguish source processes and to help constrain the global N2O budget. However, current studies suffer from limited spatial and temporal resolution capabilities due to the combination of discrete flask sampling with subsequent ...Working Paper -
Interpreting canopy development and physiology using the EUROPhen camera network at flux sites
(2015)Biogeosciences DiscussionsPlant phenological development is orchestrated through subtle changes in photoperiod, temperature, soil moisture and nutrient availability. Presently, the exact timing of plant development stages and their response to climate and management practices are crudely represented in land surface models. As visual observations of phenology are laborious, there is a need to supplement long-term observations with automated techniques such as those ...Working Paper -
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Tomography-based observation of sublimation and snow metamorphism under temperature gradient and advective flow
(2015)The Cryosphere DiscussionsWorking Paper -
Global carbon budget 2014
(2015)Earth System Science Data DiscussionsAccurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere is important to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe datasets and a methodology to quantify all major components of the global carbon budget, including their uncertainties, based on the ...Working Paper