Opposite Responses of the Dry and Moist Eddy Heat Transport Into the Arctic in the PAMIP Experiments
Journal Article
·
· Geophysical Research Letters
- University of Toronto, ON (Canada); Univ. of Toronto, ON (Canada)
- University of Toronto, ON (Canada)
- Columbia University, New York, NY (United States)
- University of California, Irvine, CA (United States)
- Met Office Hadley Centre, Exeter (United Kingdom)
- Environment and Climate Change, Victoria (Canada)
- Colorado State University, Fort Collins, CO (United States)
Given uncertainty in the processes involved in polar amplification, elucidating the role of poleward heat and moisture transport is crucial. The Polar Amplification Model Intercomparison Project (PAMIP) permits robust separation of the effects of sea ice loss from sea surface warming under climate change. We utilize a moist isentropic circulation framework that accounts for moisture transport, condensation, and eddy transport, in order to analyze the circulation connecting the mid-latitudes and the Arctic. In PAMIP's atmospheric general circulation model experiments, prescribed sea ice loss reduces poleward heat transport (PHT) by warming the returning moist isentropic circulation at high latitudes, while prescribed warming of the ocean surface increases PHT by strengthening the moist isentropic circulation. Inter-model spread of PHT into the Arctic reflects the tug-of-war between sea-ice and surface-warming effects.
- Research Organization:
- University of California, Irvine, CA (United States)
- Sponsoring Organization:
- Center for Climate and Life Fellowship; European Union Horizon 2020; National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada; USDOE; USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0019407
- OSTI ID:
- 1853224
- Alternate ID(s):
- OSTI ID: 1782311
- Journal Information:
- Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 9 Vol. 48; ISSN 0094-8276
- Publisher:
- American Geophysical Union (AGU)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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