Attribution of polar warming to human|[nbsp]|influence Export

@article{citeulike:5900394, abstract = {The polar regions have long been expected to warm strongly as a result of anthropogenic climate change, because of the positive feedbacks associated with melting ice and snow1, 2. Several studies have noted a rise in Arctic temperatures over recent decades2, 3, 4, but have not formally attributed the changes to human influence, owing to sparse observations and large natural variability5, 6. Both warming and cooling trends have been observed in Antarctica7, which the Intergovernmental Panel on Climate Change Fourth Assessment Report concludes is the only continent where anthropogenic temperature changes have not been detected so far, possibly as a result of insufficient observational coverage8. Here we use an up-to-date gridded data set of land surface temperatures9, 10 and simulations from four coupled climate models to assess the causes of the observed polar temperature changes. We find that the observed changes in Arctic and Antarctic temperatures are not consistent with internal climate variability or natural climate drivers alone, and are directly attributable to human influence. Our results demonstrate that human activities have already caused significant warming in both polar regions, with likely impacts on polar biology, indigenous communities2, ice-sheet mass balance and global sea level11.}, author = {Gillett, Nathan P. and Stone, Daithi A. and Stott, Peter A. and Nozawa, Toru and Karpechko, Alexey Y. and Hegerl, Gabriele C. and Wehner, Michael F. and Jones, Philip D.}, citeulike-article-id = {5900394}, citeulike-linkout-0 = {http://dx.doi.org/10.1038/ngeo338}, citeulike-linkout-1 = {http://dx.doi.org/10.1038/ngeo338}, day = {30}, doi = {10.1038/ngeo338}, issn = {1752-0894}, journal = {Nature Geoscience}, keywords = {anthropogenic, attribution, climate, eof, fingerprint, polar, polar-amplification, temperature, warming}, month = {October}, number = {11}, pages = {750--754}, posted-at = {2009-10-06 18:04:38}, priority = {2}, publisher = {Nature Publishing Group}, title = {Attribution of polar warming to human|[nbsp]|influence}, url = {http://dx.doi.org/10.1038/ngeo338}, volume = {1}, year = {2008} }

TY - JOUR ID - citeulike:5900394 L3 - citeulike-article-id:5900394 N2 - The polar regions have long been expected to warm strongly as a result of anthropogenic climate change, because of the positive feedbacks associated with melting ice and snow1, 2. Several studies have noted a rise in Arctic temperatures over recent decades2, 3, 4, but have not formally attributed the changes to human influence, owing to sparse observations and large natural variability5, 6. Both warming and cooling trends have been observed in Antarctica7, which the Intergovernmental Panel on Climate Change Fourth Assessment Report concludes is the only continent where anthropogenic temperature changes have not been detected so far, possibly as a result of insufficient observational coverage8. Here we use an up-to-date gridded data set of land surface temperatures9, 10 and simulations from four coupled climate models to assess the causes of the observed polar temperature changes. We find that the observed changes in Arctic and Antarctic temperatures are not consistent with internal climate variability or natural climate drivers alone, and are directly attributable to human influence. Our results demonstrate that human activities have already caused significant warming in both polar regions, with likely impacts on polar biology, indigenous communities2, ice-sheet mass balance and global sea level11. IS - 11 JF - Nature Geoscience SN - 1752-0894 EP - 754 TI - Attribution of polar warming to human|[nbsp]|influence PB - Nature Publishing Group VL - 1 SP - 750 KW - anthropogenic KW - attribution KW - climate KW - eof KW - fingerprint KW - polar KW - polar-amplification KW - temperature KW - warming AU - Gillett, Nathan AU - Stone, Daithi AU - Stott, Peter AU - Nozawa, Toru AU - Karpechko, Alexey AU - Hegerl, Gabriele AU - Wehner, Michael AU - Jones, Philip PY - 2008/10/30/ UR - http://dx.doi.org/10.1038/ngeo338 ER -