Radiative Heating of an Ice‐Free Arctic Ocean

@article{Pistone2019RadiativeHO,
  title={Radiative Heating of an Ice‐Free Arctic Ocean},
  author={Kristina Pistone and Ian Eisenman and Veerabhadran Ramanathan},
  journal={Geophysical Research Letters},
  year={2019},
  volume={46},
  pages={7474 - 7480}
}
During recent decades, there has been dramatic Arctic sea ice retreat. This has reduced the top‐of‐atmosphere albedo, adding more solar energy to the climate system. There is substantial uncertainty regarding how much ice retreat and associated solar heating will occur in the future. This is relevant to future climate projections, including the timescale for reaching global warming stabilization targets. Here we use satellite observations to estimate the amount of solar energy that would be… 

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References

SHOWING 1-10 OF 32 REFERENCES

Observational determination of albedo decrease caused by vanishing Arctic sea ice

This analysis directly quantifies how much the Arctic as viewed from space has darkened in response to the recent sea ice retreat, finding that this decline has caused 6.4 ± 0.9 W/m2 of radiative heating since 1979, considerably larger than expectations from models and recent less direct estimates.

The Global Radiative Impact of the Sea-Ice-Albedo Feedback in the Arctic

[1] A simple method for estimating the global radiative forcing caused by the sea ice–albedo feedback in the Arctic is presented. It is based on observations of cloud cover, sea ice concentration,

Observed Arctic sea-ice loss directly follows anthropogenic CO2 emission

A robust linear relationship between monthly-mean September sea-ice area and cumulative carbon dioxide (CO2) emissions allowed Notz and Stroeve to infer the future evolution of Arctic summer sea ice directly from the observational record.

Sea Ice Trends in Climate Models Only Accurate in Runs with Biased Global Warming

AbstractObservations indicate that the Arctic sea ice cover is rapidly retreating while the Antarctic sea ice cover is steadily expanding. State-of-the-art climate models, by contrast, typically

Recent and future changes in Arctic sea ice simulated by the HadCM3 AOGCM

The HadCM3 AOGCM has been used to undertake an ensemble of four integrations from 1860 to 1999 with forcings due to all major anthropogenic and natural climate factors. The simulated decreasing trend

Assessment of Sea Ice Albedo Radiative Forcing and Feedback over the Northern Hemisphere from 1982 to 2009 Using Satellite and Reanalysis Data

AbstractThe decreasing surface albedo caused by continuously retreating sea ice over Arctic plays a critical role in Arctic warming amplification. However, the quantification of the change in

Geographic muting of changes in the Arctic sea ice cover

The seasonal cycle in Arctic sea ice extent is asymmetric. Its amplitude has grown in recent decades as the ice has retreated more rapidly in summer than in winter. These seasonal disparities have

Do Climate Models Underestimate the Sensitivity of Northern Hemisphere Sea Ice Cover

AbstractThe sensitivity of Northern Hemisphere sea ice cover to global temperature change is examined in a group of climate models and in the satellite-era observations. The models are found to have

Inter‐annual to multi‐decadal Arctic sea ice extent trends in a warming world

A climate model (CCSM4) is used to investigate the influence of anthropogenic forcing on late 20th century and early 21st century Arctic sea ice extent trends. On all timescales examined (2–50+

Reduced probability of ice-free summers for 1.5 °C compared to 2 °C warming

  • A. Jahn
  • Environmental Science
    Nature Climate Change
  • 2018
Arctic sea ice has declined rapidly with increasing global temperatures. However, it is largely unknown how Arctic summer sea-ice impacts would vary under the 1.5 °C Paris target compared to