Climatological seasonal changes of wind and rainfall in the Philippines

Climatological seasonal changes of rainfall and lower tropospheric circulation in and around the Philippines are analysed by utilizing the TRMM 3B42 to obtain the 5‐day mean rainfall and ERA‐Interim wind data for the period 1998–2013. In particular, climatological onset and withdrawal processes of t...

Full description

Saved in:
Bibliographic Details
Main Authors: Matsumoto, Jun, Olaguera, Lyndon Mark, Nguyen-Le, Dzung, Kubota, Hisayuki, Villafuerte, Marcelino Q, II
Format: text
Published: Archīum Ateneo 2020
Subjects:
Online Access:https://archium.ateneo.edu/physics-faculty-pubs/44
https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.6492
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Ateneo De Manila University
id ph-ateneo-arc.physics-faculty-pubs-1043
record_format eprints
spelling ph-ateneo-arc.physics-faculty-pubs-10432020-05-26T03:13:56Z Climatological seasonal changes of wind and rainfall in the Philippines Matsumoto, Jun Olaguera, Lyndon Mark Nguyen-Le, Dzung Kubota, Hisayuki Villafuerte, Marcelino Q, II Climatological seasonal changes of rainfall and lower tropospheric circulation in and around the Philippines are analysed by utilizing the TRMM 3B42 to obtain the 5‐day mean rainfall and ERA‐Interim wind data for the period 1998–2013. In particular, climatological onset and withdrawal processes of the southwest (SW) and northeast (NE) monsoon are investigated. It is found that the onset of the SW monsoon occurs abruptly in mid‐May almost simultaneously over the Philippines except in the southern region. The start of the SW monsoon in the Philippines occurs earlier in the north than in the south. In addition, a climatological increase in rainfall on the west coast precedes the SW monsoon arrival by approximately two pentads, due to tropical cyclone influences in some years. After the SW monsoon onset, the monsoon trough is located over the southern Philippines. In mid‐June, the monsoon trough begins to deepen, and migrates northward to the central Philippines, and easterly winds intrude shortly to the northern Philippines. Then, the entire Philippines is covered by the summer monsoon westerly in early July, which is followed by the rainfall peak over the west coast region occurring in early August. The SW monsoon begins to retreat from the north in mid‐September, and fully retreats from the Philippines rather suddenly in late September. In general, the rainfall amount in the west coastal region remains high for approximately 2 months after this wind reversal, showing relatively larger post monsoon rainfall due mainly to tropical cyclone effects. During the NE monsoon season, the rainfall centre in the east coast is located in the northern and central region until mid‐December. Afterwards it is anchored in the southern region from late December to mid‐March, indicating the fully established NE monsoon season. 2020-01-01T08:00:00Z text https://archium.ateneo.edu/physics-faculty-pubs/44 https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.6492 Physics Faculty Publications Archīum Ateneo Climatology monsoon Amihan Habagat Atmospheric Sciences
institution Ateneo De Manila University
building Ateneo De Manila University Library
continent Asia
country Philippines
Philippines
content_provider Ateneo De Manila University Library
collection archium.Ateneo Institutional Repository
topic Climatology
monsoon
Amihan
Habagat
Atmospheric Sciences
spellingShingle Climatology
monsoon
Amihan
Habagat
Atmospheric Sciences
Matsumoto, Jun
Olaguera, Lyndon Mark
Nguyen-Le, Dzung
Kubota, Hisayuki
Villafuerte, Marcelino Q, II
Climatological seasonal changes of wind and rainfall in the Philippines
description Climatological seasonal changes of rainfall and lower tropospheric circulation in and around the Philippines are analysed by utilizing the TRMM 3B42 to obtain the 5‐day mean rainfall and ERA‐Interim wind data for the period 1998–2013. In particular, climatological onset and withdrawal processes of the southwest (SW) and northeast (NE) monsoon are investigated. It is found that the onset of the SW monsoon occurs abruptly in mid‐May almost simultaneously over the Philippines except in the southern region. The start of the SW monsoon in the Philippines occurs earlier in the north than in the south. In addition, a climatological increase in rainfall on the west coast precedes the SW monsoon arrival by approximately two pentads, due to tropical cyclone influences in some years. After the SW monsoon onset, the monsoon trough is located over the southern Philippines. In mid‐June, the monsoon trough begins to deepen, and migrates northward to the central Philippines, and easterly winds intrude shortly to the northern Philippines. Then, the entire Philippines is covered by the summer monsoon westerly in early July, which is followed by the rainfall peak over the west coast region occurring in early August. The SW monsoon begins to retreat from the north in mid‐September, and fully retreats from the Philippines rather suddenly in late September. In general, the rainfall amount in the west coastal region remains high for approximately 2 months after this wind reversal, showing relatively larger post monsoon rainfall due mainly to tropical cyclone effects. During the NE monsoon season, the rainfall centre in the east coast is located in the northern and central region until mid‐December. Afterwards it is anchored in the southern region from late December to mid‐March, indicating the fully established NE monsoon season.
format text
author Matsumoto, Jun
Olaguera, Lyndon Mark
Nguyen-Le, Dzung
Kubota, Hisayuki
Villafuerte, Marcelino Q, II
author_facet Matsumoto, Jun
Olaguera, Lyndon Mark
Nguyen-Le, Dzung
Kubota, Hisayuki
Villafuerte, Marcelino Q, II
author_sort Matsumoto, Jun
title Climatological seasonal changes of wind and rainfall in the Philippines
title_short Climatological seasonal changes of wind and rainfall in the Philippines
title_full Climatological seasonal changes of wind and rainfall in the Philippines
title_fullStr Climatological seasonal changes of wind and rainfall in the Philippines
title_full_unstemmed Climatological seasonal changes of wind and rainfall in the Philippines
title_sort climatological seasonal changes of wind and rainfall in the philippines
publisher Archīum Ateneo
publishDate 2020
url https://archium.ateneo.edu/physics-faculty-pubs/44
https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/joc.6492
_version_ 1722366458344767488