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Phase locking between atmospheric convectively coupled equatorial Kelvin waves and the diurnal cycle of precipitation over the Maritime Continent

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Phase locking between atmospheric convectively coupled equatorial Kelvin waves and the diurnal cycle of precipitation over the Maritime Continent. / Baranowski, Dariusz; Flatau, Maria; Flatau, Piotr; Matthews, Adrian.

In: Geophysical Research Letters, Vol. 43, No. 15, 16.08.2016, p. 8269–8276.

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@article{9b0802f5229947b48288e1ff038690c3,
title = "Phase locking between atmospheric convectively coupled equatorial Kelvin waves and the diurnal cycle of precipitation over the Maritime Continent",
abstract = "Convectively coupled Kelvin waves (CCKWs) are a major component of the tropical atmospheric circulation, propagating eastward around the equatorial belt. Here we show there are scale interactions between CCKWs and the diurnal cycle over the Maritime Continent. In particular, CCKW packets that pass a basepoint in the eastern Indian Ocean at 90E between 0600-0900 UTC subsequently arrive over Sumatra in phase with the diurnal cycle of convection. As the distance between Sumatra and Borneo is equal to the distance travelled by a CCKW in one day, these waves are then also in phase with the diurnal cycle over Borneo. Consequently, this subset of CCKWs has a precipitation signal up to a factor of 3 larger than CCKWs that arrive at other times of the day, and a 40% greater chance of successfully traversing the Maritime Continent.",
author = "Dariusz Baranowski and Maria Flatau and Piotr Flatau and Adrian Matthews",
year = "2016",
month = aug,
day = "16",
doi = "10.1002/2016GL069602",
language = "English",
volume = "43",
pages = "8269–8276",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "AMER GEOPHYSICAL UNION",
number = "15",

}

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TY - JOUR

T1 - Phase locking between atmospheric convectively coupled equatorial Kelvin waves and the diurnal cycle of precipitation over the Maritime Continent

AU - Baranowski, Dariusz

AU - Flatau, Maria

AU - Flatau, Piotr

AU - Matthews, Adrian

PY - 2016/8/16

Y1 - 2016/8/16

N2 - Convectively coupled Kelvin waves (CCKWs) are a major component of the tropical atmospheric circulation, propagating eastward around the equatorial belt. Here we show there are scale interactions between CCKWs and the diurnal cycle over the Maritime Continent. In particular, CCKW packets that pass a basepoint in the eastern Indian Ocean at 90E between 0600-0900 UTC subsequently arrive over Sumatra in phase with the diurnal cycle of convection. As the distance between Sumatra and Borneo is equal to the distance travelled by a CCKW in one day, these waves are then also in phase with the diurnal cycle over Borneo. Consequently, this subset of CCKWs has a precipitation signal up to a factor of 3 larger than CCKWs that arrive at other times of the day, and a 40% greater chance of successfully traversing the Maritime Continent.

AB - Convectively coupled Kelvin waves (CCKWs) are a major component of the tropical atmospheric circulation, propagating eastward around the equatorial belt. Here we show there are scale interactions between CCKWs and the diurnal cycle over the Maritime Continent. In particular, CCKW packets that pass a basepoint in the eastern Indian Ocean at 90E between 0600-0900 UTC subsequently arrive over Sumatra in phase with the diurnal cycle of convection. As the distance between Sumatra and Borneo is equal to the distance travelled by a CCKW in one day, these waves are then also in phase with the diurnal cycle over Borneo. Consequently, this subset of CCKWs has a precipitation signal up to a factor of 3 larger than CCKWs that arrive at other times of the day, and a 40% greater chance of successfully traversing the Maritime Continent.

U2 - 10.1002/2016GL069602

DO - 10.1002/2016GL069602

M3 - Article

VL - 43

SP - 8269

EP - 8276

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 15

ER -

ID: 86564630