Zobrazeno 1 - 10
of 24
pro vyhledávání: '"V E Romanovsky"'
Publikováno v:
Environmental Research Letters, Vol 8, Iss 3, p 035030 (2013)
Fire is an important factor controlling the composition and thickness of the organic layer in the black spruce forest ecosystems of interior Alaska. Fire that burns the organic layer can trigger dramatic changes in the underlying permafrost, leading
Externí odkaz:
https://doaj.org/article/7cd5ed3d2926400db6606fab4e4e2f81
Autor:
E. Léger, B. Dafflon, Y. Robert, C. Ulrich, J. E. Peterson, S. C. Biraud, V. E. Romanovsky, S. S. Hubbard
Publikováno v:
The Cryosphere, Vol 13, Pp 2853-2867 (2019)
Soil temperature has been recognized as a property that strongly influences a myriad of hydro-biogeochemical processes and reflects how various properties modulate the soil thermal flux. In spite of its importance, our ability to acquire soil tempera
Externí odkaz:
https://doaj.org/article/f1eb6122b26d4be3b76721f40e0ee3d2
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-11 (2018)
The occurrence and distribution of permafrost region disturbances (PRDs) remain poorly resolved across the Arctic and Subarctic. Here, the authors quantify the abundance and distribution of three primary PRDs using a time-series analysis of 30-m reso
Externí odkaz:
https://doaj.org/article/39faa4e15d2d40c48a3a8d03e2e6f344
Publikováno v:
Geoscientific Model Development, Vol 11, Pp 61-76 (2018)
Microtopographic features, such as polygonal ground, are characteristic sources of landscape heterogeneity in the Alaskan Arctic coastal plain. Here, we analyze the effects of snow redistribution (SR) and lateral subsurface processes on hydrologic
Externí odkaz:
https://doaj.org/article/4527198640e144dbbc2c940ee6a6866f
Autor:
B. M. Jones, C. A. Baughman, V. E. Romanovsky, A. D. Parsekian, E. L. Babcock, E. Stephani, M. C. Jones, G. Grosse, E. E. Berg
Publikováno v:
The Cryosphere, Vol 10, Iss 6, Pp 2673-2692 (2016)
Permafrost presence is determined by a complex interaction of climatic, topographic, and ecological conditions operating over long time scales. In particular, vegetation and organic layer characteristics may act to protect permafrost in regions with
Externí odkaz:
https://doaj.org/article/6579609448514139813df2a26166c11e
Autor:
D. Olefeldt, S. Goswami, G. Grosse, D. Hayes, G. Hugelius, P. Kuhry, A. D. McGuire, V. E. Romanovsky, A.B.K. Sannel, E.A.G. Schuur, M. R. Turetsky
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-11 (2016)
In thermokarst landscapes, permafrost thaw causes land subsidence with impacts on hydrology, ecology and biogeochemistry. Here, Olefeldt et al. produce circumpolar maps of thermokarst distribution, identifying that they cover 20% of the northern perm
Externí odkaz:
https://doaj.org/article/4bd5ffd3eab3496aa8e362798112aff6
Publikováno v:
The Cryosphere, Vol 10, Pp 2517-2532 (2016)
Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon rel
Externí odkaz:
https://doaj.org/article/18093a4a798a48ef8ac67aa9810e4f12
Autor:
D. R. Harp, A. L. Atchley, S. L. Painter, E. T. Coon, C. J. Wilson, V. E. Romanovsky, J. C. Rowland
Publikováno v:
The Cryosphere, Vol 10, Iss 1, Pp 341-358 (2016)
The effects of soil property uncertainties on permafrost thaw projections are studied using a three-phase subsurface thermal hydrology model and calibration-constrained uncertainty analysis. The null-space Monte Carlo method is used to identify soil
Externí odkaz:
https://doaj.org/article/c28c42b7b02d4480b2e20beba2716c06
Autor:
A. L. Atchley, S. L. Painter, D. R. Harp, E. T. Coon, C. J. Wilson, A. K. Liljedahl, V. E. Romanovsky
Publikováno v:
Geoscientific Model Development, Vol 8, Iss 9, Pp 2701-2722 (2015)
Climate change is profoundly transforming the carbon-rich Arctic tundra landscape, potentially moving it from a carbon sink to a carbon source by increasing the thickness of soil that thaws on a seasonal basis. However, the modeling capability and pr
Externí odkaz:
https://doaj.org/article/b595736be8f942e18604ee5422fcfe47
Autor:
B. K. Biskaborn, J.-P. Lanckman, H. Lantuit, K. Elger, D. A. Streletskiy, W. L. Cable, V. E. Romanovsky
Publikováno v:
Earth System Science Data, Vol 7, Iss 2, Pp 245-259 (2015)
The Global Terrestrial Network for Permafrost (GTN-P) provides the first dynamic database associated with the Thermal State of Permafrost (TSP) and the Circumpolar Active Layer Monitoring (CALM) programs, which extensively collect permafrost temperat
Externí odkaz:
https://doaj.org/article/772365e09dd044199e29dab4b1a706cb