Impacts of Falling Ice Radiative Effects on Projections of Southern Ocean Sea Ice Change under Global Warming ...

• Main Author: Juilin Li
• Format: Dataset
• Language: unknown
• Published: Root 2023
• Subjects: Sea ice; Southern Ocean
• Online Access: https://dx.doi.org/10.48577/jpl.ejmmlr; https://dataverse.jpl.nasa.gov/citation?persistentId=doi:10.48577/jpl.EJMMLR

AbstractThe falling ice (snow) radiative effects (FIREs) have previously been shown to contribute substantially to reduced discrepancies in simulation of present-day climatology of radiation, skin temperatures and sea ice concentration and thickness over the Southern Ocean. This study extends the earlier effort to examine the potential impacts of FIREs on simulation of sea ice changes under a scenario of gradual increase of atmospheric CO2 concentration. We perform a pair of sensitivity experiments including (SoN) and excluding (NoS) FIREs using Community Earth System Model version 1. The differences in the annual and seasonal means between the initial and warmer periods are examined. Relative to SoN, NoS simulates more surface reflected shortwave and less downward longwave radiative warming, as well as colder surface temperature, resulting in larger annual-mean sea ice extent and thickness and slower seasonal and long-term sea ice melting and thinning. Over the Southern Ocean of SoN, reduced downwelling ...