Surface pathway of radioactive plume of TEPCO Fukushima NPP1 released 134Cs and 137Cs Biogeosciences DOI 10.5194/bg-10-3067-2013 7 May 2013 134Cs and 137Cs were released to the North Pacific Ocean by two major likely pathways, direct discharge from the Fukushima NPP1 accident site and atmospheric deposition off Honshu Islands of Japan, east and northeast of the site. High density observations of 134Cs and 137Cs in the surface water were carried out by 17 cruises of cargo ships and several research vessel cruises from March 2011 till March 2012. TEPCO Fukushima NPP1 released 134Cs and 137Cs">Read more
MERIS-based ocean colour classification with the discrete Forel–Ule scale Ocean Science DOI 10.5194/os-9-477-2013 2 May 2013 In this paper we present a new algorithm that has the merit of using the full spectral information in the visible domain to characterize natural waters in a simple and globally valid way. This Forel–Ule MERIS (FUME) algorithm converts the normalized multiband reflectance information into a discrete set of numbers using uniform colourimetric functions. MERIS-based ocean colour classification with the discrete Forel–Ule scale">Read more
Possible effects on avionics induced by terrestrial gamma-ray flashes Natural Hazards and Earth System Sciences DOI 10.5194/nhess-13-1127-2013 30 April 2013 Terrestrial gamma-ray flashes (TGFs) are impulsive (intrinsically sub-millisecond) events associated with lightning in powerful thunderstorms. We address in this article the issue of the possible susceptibility of typical aircraft electronics exposed to TGF particle, gamma ray and neutron irradiation. Read more
McMaster Mesonet soil moisture dataset: description and spatio-temporal variability analysis Hydrology and Earth System Sciences DOI 10.5194/hess-17-1589-2013 29 April 2013 This paper introduces and describes the hourly, high-resolution soil moisture dataset continuously recorded by the McMaster Mesonet located in the Hamilton-Halton Watershed in Southern Ontario, Canada. Read more
Bacteriohopanepolyols record stratification, nitrogen fixation and other biogeochemical perturbations in Holocene sediments of the central Baltic Sea Biogeosciences DOI 10.5194/bg-10-2725-2013 23 April 2013 We studied bacteriohopanepolyols (BHPs), lipids of specific bacterial groups, in a sediment core from the central Baltic Sea (Gotland Deep) and found considerable differences between the distinct stages of the Baltic Sea’s history. Read more
Nitrous oxide emissions from European agriculture – an analysis of variability and drivers of emissions from field experiments Biogeosciences DOI 10.5194/bg-10-2671-2013 22 April 2013 Nitrous oxide emissions from a network of agricultural experiments in Europe were used to explore the relative importance of site and management controls of emissions. At each site, a selection of management interventions were compared within replicated experimental designs in plot-based experiments. Read more
Recent variability of the solar spectral irradiance and its impact on climate modelling Atmospheric Chemistry and Physics DOI 10.5194/acp-13-3945-2013 17 April 2013 We summarize here our current knowledge of solar spectral irradiance variability and its impact on Earth’s climate. Read more
Vertical distributions of plutonium isotopes in marine sediment cores off the Fukushima coast after the Fukushima Dai-ichi Nuclear Power Plant accident Biogeosciences DOI 10.5194/bg-10-2497-2013 15 April 2013 To obtain the vertical distribution of Pu isotopes in marine sediments and to better assess the possible contamination of Pu from the Fukushima Dai-ichi Nuclear Power Plant accident in the marine environment, we determined the activities of 239+240Pu and 241Pu as well as the atom ratios of 240Pu/239Pu and 241Pu/239Pu in sediment core samples collected in the western North Pacific off Fukushima from July 2011 to July 2012. Read more
Flood-initiating catchment conditions: a spatio-temporal analysis of large-scale soil moisture patterns in the Elbe River basin Hydrology and Earth System Sciences DOI 10.5194/hess-17-1401-2013 12 April 2013 While the large-scale meteorological conditions have been classified and successfully linked to floods, this is lacking for the large-scale pre-event catchment conditions. Therefore, we propose classifying soil moisture as a key variable of pre-event catchment conditions and investigating the link between soil moisture patterns and flood occurrence in the Elbe River basin. Read more
Oxidation of SO2 by stabilized Criegee intermediate (sCI) radicals as a crucial source for atmospheric sulfuric acid concentrations Atmospheric Chemistry and Physics DOI 10.5194/acp-13-3865-2013 12 April 2013 The effect of increased reaction rates of stabilized Criegee intermediates (sCIs) with SO2 to produce sulfuric acid is investigated using data from two different locations, SMEAR II, Hyytiälä, Finland, and Hohenpeissenberg, Germany. Read more
