Abstract
Stage-wise precipitation evolution over East Asia, primarily from spring to summer, is influenced by nearby monsoons and can be topographically driven. Corresponding to the onset of the Asian summer monsoon circulation, the Meiyu-Baiu occurs rapidly in May, replacing the East Asian spring rains. The Meiyu-Baiu rapidly terminates in late July due to the synchronous development of the subtropical monsoons extending from Africa to the East Asia-Western North Pacific (WNP). In late summer-autumn, the monsoonal circulation gradually retreats, in contrast to the rapid and stepwise transitions of the monsoon. This study reviews the role of the Indochina Peninsula in modulating the seasonality of nearby monsoons, primarily based on previous modeling works, and expands the analysis for a full view of the annual monsoon cycle. The review and additional results highlight the role of the topographical processes of the Indochina Peninsula in driving the rapid monsoonal transitions, which correspond to the early summer vertical circulation coupling over the Bay of Bengal-Indochina Peninsula and the late-July WNP monsoon onset. In the simulation with a flattened topography, the southerly winds disappear over the Indochina Peninsula and the westerly winds gradually expand eastward across the Indochina Peninsula in the lower troposphere.
| Original language | English |
|---|---|
| Article number | 255 |
| Journal | ATMOSPHERE |
| Volume | 9 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2018 Jul 6 |
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Keywords
- Asymmetric seasonal variation
- East Asian precipitation
- Indochina Peninsula topography
ASJC Scopus subject areas
- Environmental Science (miscellaneous)
Cite this
Role of Indochina Peninsula topography in precipitation seasonality over East Asia. / Wu, Chi Hua; Huang, Wan Ru; Wang, S. Y.Simon.
In: ATMOSPHERE, Vol. 9, No. 7, 255, 06.07.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Role of Indochina Peninsula topography in precipitation seasonality over East Asia
AU - Wu, Chi Hua
AU - Huang, Wan Ru
AU - Wang, S. Y.Simon
PY - 2018/7/6
Y1 - 2018/7/6
N2 - Stage-wise precipitation evolution over East Asia, primarily from spring to summer, is influenced by nearby monsoons and can be topographically driven. Corresponding to the onset of the Asian summer monsoon circulation, the Meiyu-Baiu occurs rapidly in May, replacing the East Asian spring rains. The Meiyu-Baiu rapidly terminates in late July due to the synchronous development of the subtropical monsoons extending from Africa to the East Asia-Western North Pacific (WNP). In late summer-autumn, the monsoonal circulation gradually retreats, in contrast to the rapid and stepwise transitions of the monsoon. This study reviews the role of the Indochina Peninsula in modulating the seasonality of nearby monsoons, primarily based on previous modeling works, and expands the analysis for a full view of the annual monsoon cycle. The review and additional results highlight the role of the topographical processes of the Indochina Peninsula in driving the rapid monsoonal transitions, which correspond to the early summer vertical circulation coupling over the Bay of Bengal-Indochina Peninsula and the late-July WNP monsoon onset. In the simulation with a flattened topography, the southerly winds disappear over the Indochina Peninsula and the westerly winds gradually expand eastward across the Indochina Peninsula in the lower troposphere.
AB - Stage-wise precipitation evolution over East Asia, primarily from spring to summer, is influenced by nearby monsoons and can be topographically driven. Corresponding to the onset of the Asian summer monsoon circulation, the Meiyu-Baiu occurs rapidly in May, replacing the East Asian spring rains. The Meiyu-Baiu rapidly terminates in late July due to the synchronous development of the subtropical monsoons extending from Africa to the East Asia-Western North Pacific (WNP). In late summer-autumn, the monsoonal circulation gradually retreats, in contrast to the rapid and stepwise transitions of the monsoon. This study reviews the role of the Indochina Peninsula in modulating the seasonality of nearby monsoons, primarily based on previous modeling works, and expands the analysis for a full view of the annual monsoon cycle. The review and additional results highlight the role of the topographical processes of the Indochina Peninsula in driving the rapid monsoonal transitions, which correspond to the early summer vertical circulation coupling over the Bay of Bengal-Indochina Peninsula and the late-July WNP monsoon onset. In the simulation with a flattened topography, the southerly winds disappear over the Indochina Peninsula and the westerly winds gradually expand eastward across the Indochina Peninsula in the lower troposphere.
KW - Asymmetric seasonal variation
KW - East Asian precipitation
KW - Indochina Peninsula topography
UR - http://www.scopus.com/inward/record.url?scp=85049627727&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049627727&partnerID=8YFLogxK
U2 - 10.3390/atmos9070255
DO - 10.3390/atmos9070255
M3 - Article
VL - 9
JO - ATMOSPHERE
JF - ATMOSPHERE
SN - 2073-4433
IS - 7
M1 - 255
ER -