Items where Author is "Sachs, Torsten"

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Number of items: 52.

Article

Krings, T. , Gerilowski, K. , Buchwitz, M. , Hartmann, J. , Sachs, T. , Erzinger, J. , Burrows, J. and Bovensmann, H. (2013)
Quantification of methane emission rates from coal mine ventilation shafts using airborne remote sensing data ,

Atmospheric Measurement Techniques, Copernicus Publications, 6 , pp. 151-166 .

doi:10.5194/amt-6-151-2013 , hdl:10013/epic.40771

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Article

Zhang, Y. , Sachs, T. , Li, C. and Boike, J. (2011)
Upscaling methane fluxes from closed chambers to eddy covariance based on a permafrost biogeochemistry integrated model ,

Global Change Biology, 18 (4), pp. 1428-1440 .

doi:10.1111/j.1365-2486.2011.02587.x , hdl:10013/epic.38859

Article

Sachs, T. , Giebels, M. , Boike, J. and Kutzbach, L. (2010)
Environmental controls on CH4 emission from polygonal tundra on the micro-site scale in the Lena river delta, Siberia ,

Global Change Biology, 16 (11), pp. 3096-3110 .

doi:10.1111/j.1365-2486.2010.02232.x , hdl:10013/epic.35421

Article

Petrescu, A. M. R. , van Beek, L. P. H. , van Huissteden, J. , Prigent, C. , Sachs, T. , Corradi, C. , Parmentier, J. F. and Dolman, A. J. (2010)
Modeling regional to global CH4 emissions of boreal and arctic wetlands ,

Global Biogeochem. Cycless, 24, GB4009. .

doi:10.1029/2009GB003610 , hdl:10013/epic.36187

Article

Jahn, M. , Sachs, T. , Mansfeld, T. and Overesch, M. (2010)
Review: Global climate change and its impacts on the terrestrial Arctic carbon cycle with special regards to ecosystem components and the greenhouse-gas balance ,

J. Plant Nutr. Soil Sci., 173 (5), pp. 627-643 .

doi:10.1002/jpln.200900331 , hdl:10013/epic.35917

Article

Sachs, T. , Wille, C. , Boike, J. and Kutzbach, L. (2008)
Environmental controls on ecosystem-scale CH4 emission from polygonal tundra in the Lena River Delta, Siberia ,

Journal of Geophysical Research - Biogeosciences, 113, G00A03 .

doi:10.1029/2007JG000505 , hdl:10013/epic.30122

Article

Wille, C. , Kutzbach, L. , Sachs, T. , Wagner, D. and Pfeiffer, E. M. (2008)
Methane emssion from Siberian arctic polygonal tundra: eddy covariance measurements and modeling ,

Global Change Biology, 14 (6), pp. 1395-1408 .

doi:10.1111/j.1365-2486.2008.01586.x , hdl:10013/epic.30409

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Article

Kutzbach, L. , Schneider, J. , Sachs, T. , Giebels, M. , Nykänen, H. , Shurpali, N. J. , Martikainen, P. J. , Alm, J. and Wilmking, M. (2007)
CO2 flux determination by closed-chamber methods can be seriously biased by inappropriate application of linear regression ,

Biogeosciences, 4{http://www.biogeosciences.net/4/1005/2007/bg-4-1005-2007.html}, 1005 .

hdl:10013/epic.27680

Article

Wickland, K. P. , Striegl, R. G. , Neff, J. C. and Sachs, T. (2006)
Effects of permafrost melting on CO2 and CH4 exchange of a poorly drained black spruce lowland ,

J. Geophys. Res., Vol. 111, No. G2, G02011 .

doi:10.1029/2005JG000099 , hdl:10013/epic.24813

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Inbook

Boike, J. , Langer, M. , Lantuit, H. , Muster, S. , Sachs, T. , Ovderduin, P. P. , Westermann, S. , Roth, K. and McGuire, A. D. (2012)
Permafrost - physical aspects and carbon cycling, databases and uncertainties / Lal, R. , Lorenz, K. , Hüttl, R. F. , Schneider, B. U. and von Braun, J. (editors) ,

Recarbonization of the Biosphere (Ecosystems and the Global Carbon Cycle), Dordrecht Heidelberg New York London, Springer Book, 545 p., ISBN: 978-94-007-4158-4 .

doi:10.1007/978-94-007-4159-1 , hdl:10013/epic.39187

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Inbook

Boike, J. , Sachs, T. and Overduin, P. P. (2007)
Arktische Dauerfrostböden und Küsten im Wandel - Versumpfung oder Versteppung? ,

15 Jahre Forschungsstelle Potsdam, Alfred-Wegener-Institut für Polar- und Meeresforschung, Helmholtzgemeinschaft, Forschungsstelle Potsdam (Hrsg.) .

hdl:10013/epic.30130

Thesis

Thesis -PhD

Sachs, T. (2009)
Land-atmosphere interactions on different scales - The exchange of methane between wet Arctic tundra and the atmosphere at the Lena River Delta, Northern Siberia ,

PhD thesis, University of Potsdam, Germany.

hdl:10013/epic.34065

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Thesis -Master

Sachs, T. (2003)
Greenhouse Gas Emissions under two Permafrost Regimes ,

Master thesis, Alaska Pacific University, Anchorage, Alaska, USA.

hdl:10013/epic.26939

Conference

Conference -Talk

Hubberten, H. W. , Lantuit, H. , Heim, B. and Sachs, T. (2013)
Permafrost and Carbon ,

7th Meeting MERLIN Science Advisory Group, Paris, France, 20 March 2013 - 21 March 2013 .

hdl:10013/epic.41506

Conference -Conference paper

Sachs, T. , Serafimovich, A. and Hartmann, J. (2012)
Airborne Eddy Covariance Measurements of Methane on the North Slope of Alaska and in the Meckenzie Delta ,

AGU Fall Meeting 2012, San Francisco , 4 December 2012 - unspecified .

hdl:10013/epic.40611

Conference -Poster

Cresto-Aleina, F. , Brovkin, V. , Muster, S. , Boike, J. , Kutzbach, L. , Sachs, T. and Zuyev, S. (2012)
A stochastic model for the polygonal tundra based on Poisson-Voronoi Diagrams ,

AGU Fall Meeting, San Francisco, 3 December 2012 - 7 December 2012 .

hdl:10013/epic.40660

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Conference -Talk

Hartmann, J. and Sachs, T. (2012)
Airborne Measurements of Methane Fluxes over Mid-Latitude and Sub-ArcticWetlands ,

EGU General Assembly 2012, Wien, 23 April 2012 - unspecified .

hdl:10013/epic.39536

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Conference -Talk

Sachs, T. and Hartmann, J. (2011)
Airborne eddy covariance measurements of methane over mid-latitude and sub-Arctic wetlands ,

American Geophysical Union Fall Meeting, San Francisco, USA, 5 December 2011 - 9 December 2011 .

hdl:10013/epic.38444

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Conference -Conference paper

Sachs, T. and Hartmann, J. (2011)
Airborne eddy covariance measurements of methane over mid-latitude and sub-Arctic wetlands ,

AGU Fall Meeting, San Francisco .

hdl:10013/epic.38505

Conference -Poster

Hubberten, H. W. , Heim, B. , Boike, J. , Wagner, D. , Overduin, P. P. , Sobiech, J. , Griess, J. , Herzschuh, U. , di Primio, R. , Sachs, T. , Rockel, B. and Klehmet, K. (2010)
Northern High Latitudes: Permafrost climate linkages - energy, water and carbon balance ,

Regional Climate Change - 1rst REKLIM Conference, Karlsruhe, DE, 29 September 2010 - 30 September 2010 .

hdl:10013/epic.38438

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Conference -Talk

Sachs, T. , Schreiber, P. , Wille, C. , Kutzbach, L. and Boike, J. (2010)
Eight years of micrometeorological land-atmosphere carbon flux measurements at a Northern Siberian polygonal tundra site ,

3rd European Conference on Permafrost, LongyearbyenJune 2010. .

hdl:10013/epic.34507

Conference -Talk

Schreiber, P. , Wille, C. , Sachs, T. , Pfeiffer, E. M. and Kutzbach, L. (2010)
Land-atmosphere fluxes of methane and carbon dioxide at Siberian polygonal tundra - new data from 2009 in comparison to data from 2003/04 and 2006 ,

EGU General Assembly, ViennaMay 2010. .

hdl:10013/epic.34506

Conference -Talk

Sachs, T. , Schreiber, P. , Wille, C. , Boike, J. and Kutzbach, L. (2010)
Six years of micrometeorological land-atmosphere flux measurements of carbon dioxide and methane at a Northern Siberian tundra site ,

IPY Oslo Science Conference, OsloJune 2010. .

hdl:10013/epic.34778

Conference -Invited talk

Boike, J. , Bolton, B. , Bornemann, N. , Kattenstroth, B. , Langer, M. , Muster, S. , Piel, K. , Sachs, T. , Stoof, G. and Westermann, S. (2009)
Characteristics of Heat and Water Budget of two Arctic Permafrost Sites: Dominant Processes and Observed Changes ,

The Meeting of the Americas Joint Assembly, May 24-27, 2009, Toronto, Ontario, Canada. .

hdl:10013/epic.32096

Conference -Talk

Kutzbach, L. , Becker, T. , Sachs, T. , Forbrich, I. , Schneider, J. and Wilmking, M. (2009)
Geospatial challenges towards the quantitative understanding of peatland carbon dynamics across multiple scales ,

2nd International Symposium Peatlands in the Global Carbon Cycle, PragueSeptember 2009. .

hdl:10013/epic.34505

Conference -Talk

Kutzbach, L. , Wille, C. , Sachs, T. and Pfeiffer, E. M. (2009)
Methane and carbon dioxide exchange fluxes of Siberian polygonal tundra: Eddy covariance measurements and modeling ,

XIXth International Symposium on Environmental Biogeochemistry - Environmental Changes and Sustainability of Biogeochemical Cycling, HamburgSeptember 2009. .

hdl:10013/epic.34503

Conference -Poster

SPARC group, B. , Bolton, W. R. , Grüber, M. , Langer, M. , Muster, S. , Piel, K. , Sachs, T. , Stoof, G. and Westermann, S. (2008)
Analysis of permafrost and its spatial characteristics ,

ESA workshop Permafrost, Potsdam, February 20-21, Potsdam .

hdl:10013/epic.33980

Conference -Talk

Sachs, T. , Giebels, M. , Boike, J. and Kutzbach, L. (2008)
Environmental controls on plot-scale CH4 emission from polygonal tundra in the Lena River Delta, Siberia ,

European Geosciences Union, General Assembly, April 14-18, 2008, Vienna, Austria .

hdl:10013/epic.31278

Conference -Talk

Sachs, T. and Eugster, W. (2008)
Estimating Spatially Heterogeneous Contributions to Ecosystem Scale Fluxes Directly From Eddy Covariance Measurements: A Case Study in Siberian wet Polygonal Tundra on Samoylov Island, Lena River Delta ,

American Geophysical Union Fall Meeting, San FranciscoDecember. .

hdl:10013/epic.31685

Conference -Conference paper

Kirschke, S. , Guenther, K. P. , Wisskirchen, K. , Sachs, T. and Dech, S. (2008)
Methane Emission from Siberian Wet Polygonal Tundra on Multiple Spatial Scales: Process-based Modelling of Methane Fluxes on the Regional Scale, Lena Delta ,

Proceedings of the Ninth International Conference on Permafrost, 29 June 3 July 2008, Volume 1, University of Alaska Fairbanks, USA, pp. .

hdl:10013/epic.31273

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Conference -Talk

Ninth International Conference on Permafrost, Fairbanks, USAJune 3 July .

hdl:10013/epic.31277

Conference -Conference paper

Sachs, T. , Giebels, M. , Wille, C. , Kutzbach, L. and Boike, J. (2008)
Methane Emission from Siberian Wet Polygonal Tundra on Multiple Spatial Scales: Vertical Flux Measurements by Closed Chambers and Eddy Covariance, Samoylov Island, Lena River Delta ,

Proceedings of the 9th International Conference on Permafrost, June 29 - July 3, 2008, University of Alaska, Fairbanks, USA .

hdl:10013/epic.30129

Preview

Conference -Talk

9th International Conference on Permafrost, June 29 - July 3, 2008, University of Alaska, Fairbanks, USA .

hdl:10013/epic.31276

Conference -Talk

Sachs, T. (2008)
Methane emission from wet polygonal tundra on different scales: Results from eddy covariance and closed chamber measurements in the Lena River Delta, Siberia ,

Helmholtz-EOS Conference, PotsdamOctober 2008. .

hdl:10013/epic.34619

Conference -Poster

Muster, S. , Boike, J. , Bolton, W. , Grüber, M. , Langer, M. , Piel, K. , Sachs, T. , Stoof, G. and Westermann, S. (2008)
Monitoring permafrost patterned ground with small-format aerial photography: Classification of a polygon landscape on Samoylov Island, Lena Delta, Siberia ,

European Geoscience Union, General Assembly, April 14-20, 2008, Vienna, Austria .

hdl:10013/epic.30415

Conference -Poster

Kaiser, B. , Schofield, R. , Lantuit, H. , Sachs, T. , Richter, A. , Würzberg, L. and Haase, D. (2008)
Polarjugend.de - Eine IPJ Bildungsinitiative von APECS Deutschland ,

23. Internationale Polartagung, Münster. .

hdl:10013/epic.28619

Conference -Talk

Westermann, S. , Bolton, W. R. , Langer, M. , Muster, S. , Piel, K. , Sachs, T. , Stoof, G. and Boike, J. (2008)
Sensitivity of the Arctic's heat and water budget under a changing climate - a multiscale perspective ,

1. Treffen des Arbeitskreises Permafrost in der DPG, Potsdam, Germany .

hdl:10013/epic.31709

Conference -Talk

Boike, J. , Bolton, B. , Grüber, M. , Langer, M. , Muster, S. , Piel, K. , Sachs, T. , Stoof, G. and Westermann, S. (2008)
Sensitivity of the permafrost systems heat and water budget under changing climate: A multiscale perspective (SPARC) ,

ESA workshop on Permafrost, February 20-21, 2008, Potsdam, Germany .

hdl:10013/epic.30208

Conference -Invited talk

Sachs, T. (2008)
Siberian Summer - Expeditions to the Lena River Delta ,

Barrow Arctic Science Consortium's Outreach Series, Tuzzy Library, Barrow, AlaskaJuly 2008. .

hdl:10013/epic.34502

Conference -Talk

Boike, J. , Bolton, W. R. , Grüber, M. , Langer, M. , Muster, S. , Piel, K. , Sachs, T. , Stoof, G. and Westermann, S. (2008)
Ten years (1998-2007) of water and energy balance studies at a Siberian Arctic polygonal tundra site- what do we observe? ,

European Geoscience Union, General Assembly, April 14-18, 2008, Vienna, Austria .

hdl:10013/epic.30419

Conference -Talk

Sachs, T. , Giebels, M. , Boike, J. and Kutzbach, L. (2007)
Environmental Controls on Methane Emission From Siberian wet Polygonal Tundra on Samoylov Island, Lena River Delta ,

American Geophysical Union Fall Meeting, December 10-14, 2007, San Francisco, CA, USA .

hdl:10013/epic.27889

Conference -Poster

Wille, C. , Kutzbach, L. , Sachs, T. , Wagner, D. and Pfeiffer, E. M. (2007)
Methane Emission from Siberian arctic polygonal Tundra: Eddy Covariance Measurements and Modeling ,

European Geosciences Union, Vienna, Austria, April .

hdl:10013/epic.27004

Conference -Talk

Sachs, T. , Giebels, M. , Wille, C. , Kutzbach, L. and Boike, J. (2007)
Methane emissions from wet polygonal tundra I: Growing-season flux measurements on the ecosystem scale and plot scale, Samoylov Island, Lena Delta, Siberia ,

International Conference "Cryogenic Resources of Polar Regions", June 17-21, 2007, Salekhard, Russia .

hdl:10013/epic.26748

Conference -Talk

Kirschke, S. , Guenther, K. , Wisskirchen, K. and Sachs, T. (2007)
Methane emissions from wet polygonal tundra II: Modelling methane fluxes on the regional scale a case study for the Lena River Delta region ,

International Conference "Cryogenic Resources of Polar Regions", Salekhard, Russia, June 17-21 .

hdl:10013/epic.26749

Conference -Poster

Sachs, T. , Kaiser, B. , Richter, A. , Schofield, R. , Lantuit, H. , Salmon, R. and Haase, D. (2007)
Polarjugend.de - an IPY Education and Outreach Project of the German Youth Steering Committee ,

American Geophysical Union Fall Meeting, San Francisco, CA, Dec .

hdl:10013/epic.28742