JAN 03, 2021 6:16 PM PST

Scientists rectify errors in sea-ice model

Researchers from the Institute of Atmospheric Physics at the Chinese Academy of Sciences have readdressed the claims put forth by a model from the Massachusetts Institute of Technology that considers the changes in Arctic sea ice. Led by Professor Fei Zheng, the team found discrepancies in MIT’s general circulation model (MITgcm) and the Arctic sea-ice simulations that MITgcm generates.

"We evaluated the model's performance in the Arctic cold season (March) and warm season (September), and found the model performances are different in the two months," says Zheng. "Due to the uncertainty of the model, the model's insufficient response to the signal of atmospheric forcings, and the insufficient response to the ocean boundary signal, there were disagreements between the simulations and observations in both March and September."

Their new paper, published in Advances in Atmospheric Sciences, identifies the error sources of the MITgcm’s ocean-ice coupling configuration. “The results show that MITgcm can reproduce the interannual and seasonal variability of the sea-ice extent, but underestimates the trend in sea-ice extent, especially in September,” write the authors.

Photo: Pixabay

By comparing MITgcm’s simulations with observations from different sources, the Chinese Academy scientists found that MITgmc “fails to incorporate the atmospheric information in March and oceanic information in September.” They write:

When the model underestimates the atmospheric influence on the sea-ice evolution in March, deviations in the sea-ice concentration arise at the ice edges and are higher than those in September. In contrast, when the model underestimates the oceanic boundaries’ influence on the September sea-ice evolution, disagreements in the distribution of the sea-ice concentration and its trend are found over most marginal seas in the Arctic Ocean.

The Institute’s team hopes to rectify these error sources in order to finetune simulations and enhance the prediction of the Arctic sea ice in different seasons.

Sources: Advances in Atmospheric Sciences, Eureka Alert

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
JUL 25, 2021
Health & Medicine
Warming climates contributes to increasing heat stress, especially for vulnerable populations
JUL 25, 2021
Warming climates contributes to increasing heat stress, especially for vulnerable populations
New research found that an warmer temperatures lead to an increase in heat stress in humans, which is especially harmful ...
AUG 03, 2021
Technology
Using Snakes to Monitor Nuclear Radiation
AUG 03, 2021
Using Snakes to Monitor Nuclear Radiation
Nuclear disasters can be devastating. When these accidents happen, such as Chernobyl in the Ukraine or Fukushima in Japa ...
AUG 22, 2021
Microbiology
Morbillivirus in Fraser's Dolphins May Infect Other Marine Mammals
AUG 22, 2021
Morbillivirus in Fraser's Dolphins May Infect Other Marine Mammals
Scientists are concerned about a virus they've recently identified in Fraser's dolphins. Though the disease has already ...
SEP 17, 2021
Earth & The Environment
City Solutions - Green Rooftops in Urban Spaces
SEP 17, 2021
City Solutions - Green Rooftops in Urban Spaces
Most of the world’s population lives in cities. Population growth is expected to continue to be focused in urban a ...
OCT 06, 2021
Chemistry & Physics
2021's Nobel Prize in Physics Recognizes Foundational Work in Climate Science
OCT 06, 2021
2021's Nobel Prize in Physics Recognizes Foundational Work in Climate Science
The 2021 lineup for one of the world’s most prestigious awards has been announced, and the medal for physics has b ...
OCT 17, 2021
Microbiology
Harmless Microbes Can be Pressured to Turn Bad
OCT 17, 2021
Harmless Microbes Can be Pressured to Turn Bad
The world is full of microorganisms. Luckily, most pose no threat to us. But some harmless bacteria have the potential t ...
Loading Comments...