UPA Perpustakaan Universitas Jember

Precursor Role of Winter Sea-Ice in the Labrador Sea for Following-Spring Precipitation over Southeastern North America and Western Europe

Zhe HAN - Personal Name
Shuanglin LI2 - Personal Name

The role of winter sea-ice in the Labrador Sea as a precursor for precipitation anomalies over southeastern North America
and Western Europe in the following spring is investigated. In general terms, as the sea ice increases, the precipitation also
increases. In more detail, however, analyses indicate that both the winter sea-ice and the sea surface temperature (SST)
anomalies related to increases in winter sea-ice in the Labrador Sea can persist into the following spring. These features
play a forcing role in the spring atmosphere, which may be the physical mechanism behind the observational relationship
between the winter sea-ice and spring precipitation anomalies. The oceanic forcings in spring include Arctic sea-ice anomalies
and SST anomalies in the tropical Pacific and high-latitude North Atlantic. Multi-model Coupled Model Intercomparison
Project Phase 5 and Atmospheric Model Intercomparison Project simulation results show that the atmospheric circulation
response to the combination of sea-ice and SST is similar to that observed, which suggests that the oceanic forcings are
indeed the physical reason for the enhanced spring precipitation. Sensitivity experiments conducted using an atmospheric
general circulation model indicate that the increases in precipitation over southeastern North America are mainly attributable
to the effect of the SST anomalies, while the increases over Western Europe are mainly due to the sea-ice anomalies. Although
model simulations reveal that the SST anomalies play the primary role in the precipitation anomalies over southeastern North
America, the observational statistical analyses indicate that the area of sea-ice in the Labrador Sea seems to be the precursor
that best predicts the spring precipitation anomaly.

EB00000002261K Available

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winter Labrador sea ice
spring precipitation
air-sea interaction

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Precursor Role of Winter Sea-Ice in the Labrador Sea for Following-Spring Precipitation over Southeastern North America and Western Europe

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NPP. 3509212D1000001

Precursor Role of Winter Sea-Ice in the Labrador Sea for Following-Spring Precipitation over Southeastern North America and Western Europe

Zhe HAN - Personal NameShuanglin LI2 - Personal Name

Series Title

Call Number

Publisher

Collation

Language

ISBN/ISSN

Classification

Content Type

Media Type

Carrier Type

Edition

Subject(s)

Specific Detail Info

Statement of Responsibility

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Zhe HAN - Personal Name
Shuanglin LI2 - Personal Name