Detailed insight into Arctic climatic variability during MIS 11c at Lake El’gygytgyn, NE Russia Climate of the Past DOI 10.5194/cp-9-1467-2013 15 July 2013 Here we present a detailed multi-proxy record of the climate and environmental evolution at Lake El’gygytgyn, Far East Russian Arctic during the period 430–395 ka covering the marine isotope stage (MIS) 12/11 transition and the thermal maximum of super interglacial MIS 11c. Read more
Halogen species record Antarctic sea ice extent over glacial–interglacial periods Atmospheric Chemistry and Physics DOI 10.5194/acp-13-6623-2013 12 July 2013 Here we present speciation measurements of bromine and iodine in the TALDICE (TALos Dome Ice CorE) ice core (159°11’ E, 72°49’ S; 2315 m a.s.l.) spanning the last 215 ky. Based on our results we propose the use of both halogens for examining Antarctic variability of past sea ice extent. Read more
Increased soil temperature and atmospheric N deposition have no effect on the N status and growth of a mature balsam fir forest Biogeosciences DOI 10.5194/bg-10-4627-2013 11 July 2013 Nitrogen (N) is a major growth-limiting factor in boreal forest ecosystems. Increases of temperature and atmospheric N deposition are expected to affect forest growth directly and indirectly by increasing N availability due to higher rates of N mineralization. We conducted experiments on a mature balsam fir stand in Canada to understand the potential impacts of these changes. Read more
Comparative assessment of predictions in ungauged basins – Part 2: Flood and low flow studies Hydrology and Earth System Sciences DOI 10.5194/hess-17-2637-2013 9 July 2013 The objective of this paper is to assess the performance of methods that predict low flows and flood runoff in ungauged catchments. The aim is to learn from the similarities and differences between catchments in different places, and to interpret the differences in performance in terms of the underlying climate-landscape controls. Read more
Impact of change in climate and policy from 1988 to 2007 on environmental and microbial variables at the time series station Boknis Eck, Baltic Sea Biogeosciences DOI 10.5194/bg-10-4529-2013 4 July 2013 The temporal development of phytoplankton was monitored from 1988 to the end of 2007 at the time series station Boknis Eck in the western Baltic Sea. Read more
Detection of a plasmaspheric wind in the Earth’s magnetosphere by the Cluster spacecraft Annales Geophysicae DOI 10.5194/angeo-31-1143-2013 2 July 2013 Analysis of ion measurements, acquired in the outer plasmasphere by the CIS experiment onboard the four Cluster spacecraft, provide now an experimental confirmation of the plasmaspheric wind. Read more
Seasonal measurements of total OH reactivity emission rates from Norway spruce in 2011 Biogeosciences DOI 10.5194/bg-10-4241-2013 26 June 2013 One way to investigate the chemical interplay between biosphere and atmosphere is through the measurement of total OH reactivity, the total loss rate of OH radicals. This study presents the first determination of total OH reactivity emission rates based on a branch cuvette enclosure system mounted on a Norway spruce throughout spring, summer and autumn 2011. Read more
Muon radiography for exploration of Mars geology Geoscientific Instrumentation, Methods and Data Systems DOI 10.5194/gi-2-157-2013 17 June 2013 Preliminary estimates of muon production on Mars indicate that the near horizontal Martian muon flux, which could be used for muon radiography, is as strong or stronger than that on Earth, making the technique suitable for exploration of numerous high priority geological targets on Mars. Read more
Formation of aqueous-phase α-hydroxyhydroperoxides (α-HHP): potential atmospheric impacts Atmospheric Chemistry and Physics DOI 10.5194/acp-13-5857-2013 17 June 2013 The focus of this work is on quantifying the degree of the aqueous-phase formation of α-hydroxyhydroperoxides (α-HHPs) via reversible nucleophilic addition of H2O2 to aldehydes. Formation of this class of highly oxygenated organic hydroperoxides represents a poorly characterized aqueous-phase processing pathway that may lead to enhanced SOA formation and aerosol toxicity. Read more
Iodine-129 concentration in seawater near Fukushima before and after the accident at the Fukushima Daiichi Nuclear Power Plant Biogeosciences DOI 10.5194/bg-10-3839-2013 14 June 2013 Anthropogenic radionuclides were released into the environment in large quantities by the Fukushima Daiichi Nuclear Power Plant (1FNPP) accident. To evaluate accident-derived 129I, the 129I concentrations in seawater before and after the accident were compared. Read more
