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  • Journals
  • Articles  (3)
  • Austrian Journal of Earth Sciences  (1)
  • Berlin : Heinrich Böll Foundation  (1)
  • Copernicus Publications  (1)
  • 2010-2014  (3)
  • 2012  (3)
  • 1
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    Spatial Patterns of Permafrost at Hoher Sonnblick (Austrian Alps) - Extensive Field-measurements and Modelling Approaches (2012)
    Austrian Journal of Earth Sciences
    In:  EPIC3Vienna, Austrian Journal of Earth Sciences
    Details
    Publication Date: 2014-05-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
    Format: application/pdf
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  • 2
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    A survey of carbon monoxide and non-methane hydrocarbons in the Arctic Ocean during summer 2010: assessment of the role of phytoplankton (2012)
    Copernicus Publications
    In:  EPIC3Biogeosciences Discussions, Copernicus Publications, 9, pp. 4727-4792
    Details
    Publication Date: 2019-07-17
    Description: During the ARK XXV 1+2 expedition in the Arctic Ocean carried out in June–July 2010 aboard the R/V Polarstern, we measured carbon monoxide (CO), non-methane hydrocarbons (NMHC) and phytoplankton pigments at the sea surface and down to a depth 5 of 100m. The CO and NMHC sea-surface concentrations were highly variable; CO, propene and isoprene levels ranged from 0.6 to 17.5 nmol l−1, 1 to 322 pmol l−1 and 1 to 541 pmol l−1, respectively. The CO and alkene concentrations were enhanced in polar waters off of Greenland, which were more stratified because of ice melting and richer in chromophoric dissolved organic matter (CDOM) than typical North Atlantic 10 waters. The spatial distribution of the surface concentrations of CO was consistent with our current understanding of CO-induced UV photo-production in the sea. The vertical distributions of the CO and alkenes followed the trend of light penetration, with the concentrations displaying a relatively regular exponential decrease down to nonmeasurable values below 50 m. However, no diurnal variations of CO or alkene con15 centrations were observed in the stratified and irradiated surface layers. This finding suggests that the production and removal processes of CO and alkenes were tightly coupled. We tentatively determined a first-order rate constant for the microbial consumption of CO of 0.5 d−1, which is in agreement with previous studies. On several occasions, we observed the existence of subsurface CO maxima at the level of the 20 deep chlorophyll maximum. This finding represents field evidence for the existence of a non-photochemical CO production pathway, most likely of phytoplanktonic origin. The corresponding production rates normalized to the chlorophyll content were in the range of those estimated from laboratory experiments. In general, the vertical distributions of isoprene followed that of the phytoplankton biomass. Hence, oceanic data support the 25 existence of biological production of CO and isoprene in the Arctic Ocean
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , notRev
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  • 3
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    International resource politics : new challenges demanding new governance approaches for a green economy (2012)
    Berlin : Heinrich Böll Foundation | Wuppertal : Wuppertal Institut für Klima, Umwelt, Energie
    Details
    Publication Date: 2018-11-23
    Description: Natural resources are back on the agenda. After the rise of new economic powers such as China, India, and Brazil, global competition has perceptibly increased strategic concerns as regards high commodity prices and possible supply shortages. Germany, the EU, the United States, and many others have formulated raw material strategies that put concern over access and supply at center stage - but the environmental and the socio-political dimensions are widely neglected in these strategies. This paper underlines a new dimension of international relations and pleads for new approaches, called international resource politics, which can be used for ongoing debates concerning green economy and transition strategies.
    Keywords: ddc:330
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: report , doc-type:report
    Format: application/pdf
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