Be in the know. “We are moving into uncharted waters with respect to climate change in the North.”. Geosci., 7, 181-184, https://doi.org/10.1038/ngeo2071. “Clearly, we need to come to terms with the impacts of these warmer temperatures and consequences for northern communities, infrastructure and lifestyles,” said Froese. While there is currently no consensus on the reasons for Arctic amplification, proposed mechanisms include: reduced summer albedo due to sea ice and snow cover loss (Pithan and Mauritsen 2014), the increase of water vapor and clouds in the Arctic atmosphere (Dufour et al. Autumn, spring, and summer seasons showed warm central Arctic temperatures of +2°C above the long-term average (1981-2010).
ERA40 has been applied for the 1958-2002 climatology (white line), while the operational ECMWF is used for the current year. A new paper shows that air temperature is the "smoking gun" behind climate change in the Arctic, according to John Walsh, chief scientist for the UAF International Arctic Research Center.
100.4 degree Arctic temperature record confirmed as study suggests Earth is warmest in at least 12,000 years. Dr. Michael Mann is arguably one of the world's most respected climate scientists. In other words, if hypothetically you were able to live in that area for 100,000 years, statistically speaking you should only experience such an extreme period of temperatures one time. [Data from @ECMWF ERA5 reanalysis] pic.twitter.com/ssAHCuBvRo. … 1). “This period, called the early Holocene thermal maximum, occurred when the Earth's axis was more strongly directed toward the sun. The northern Bering Sea was particularly warm, and contributed to low sea ice extent and ecological impacts to fisheries and marine mammals (see essay Recent Warming in the Bering Sea). 6Joint Institute for the Study of the Atmosphere and Ocean, University of Washington, Seattle, WA, USA
These SAT divisions are chosen to coincide with the seasonal cycles of key Arctic variables. Experts have frequently described that imbalance by saying that the Arctic is warming at twice the rate of the global average. For the study released Tuesday, a team of scientists affiliated with an international paleoclimate collaboration called PAGES (Past Global Changes), analyzed data spanning thousands of years into the past. Although there are year-to-year and regional differences in air temperatures, driven by natural variability, the magnitude, persistence, and Arctic-wide patterns of recent temperature increases are indicators of global climate change from increasing concentrations of atmospheric greenhouse gases (Overland 2009; Notz and Stroeve 2016). 1 Arctic annual surface air temperatures in 2014, 2015, 2016, 2 2017, and 2018 exceeded those of any year since 1900. Stuecker, M. F., C. M. Bitz, K. C. Armour, C. Proistosescu, S. M. Kang, S. -P. Xie, D. Kim, S. McGregor, W. Zhang, S. Zhao, W. Cai, Y. Dong, and F. -F. Jin, 2018: Polar amplification dominated by local forcing and feedbacks.