Variability of Hawaiian Winter Rainfall during La Niña Events since 1956

Variability of Hawaiian Winter Rainfall during La Niña Events since 1956. O’Connor, C. F., Chu, P., Hsu, P., & Kodama, K. Journal of Climate, 28(19):7809–7823, October, 2015.

Paper doi abstract bibtex

Rainfall in Hawaii during La Niña years has undergone abnormal variability since the early 1980s. Traditionally, Hawaii receives greater-than-normal precipitation during the La Niña wet seasons. Recently, La Niña years have experienced less-than-normal rainfall. A drying trend in Hawaiian precipitation during La Niña years is evident. A changepoint analysis determined that the shift in precipitation occurred in 1983, forming the two epochs used for comparison in this study. The ﬁrst epoch (E1) runs from 1956 to 1982 and the second epoch (E2) from 1983 to 2010. Location-speciﬁc changes in rainfall anomalies from E1 to E2 throughout the Hawaiian Islands are examined, illustrating that the greatest difference in rainfall between epochs is found on the climatologically drier sides (i.e., south and west) of the islands. Variations in tropical sea surface temperatures and circulation features in the northern Paciﬁc Ocean have changed during La Niña wet seasons, thus changing La Niña–year rainfall.

@article{oconnor_variability_2015,
	title = {Variability of {Hawaiian} {Winter} {Rainfall} during {La} {Niña} {Events} since 1956},
	volume = {28},
	issn = {0894-8755, 1520-0442},
	url = {http://journals.ametsoc.org/doi/10.1175/JCLI-D-14-00638.1},
	doi = {10.1175/JCLI-D-14-00638.1},
	abstract = {Rainfall in Hawaii during La Niña years has undergone abnormal variability since the early 1980s. Traditionally, Hawaii receives greater-than-normal precipitation during the La Niña wet seasons. Recently, La Niña years have experienced less-than-normal rainfall. A drying trend in Hawaiian precipitation during La Niña years is evident. A changepoint analysis determined that the shift in precipitation occurred in 1983, forming the two epochs used for comparison in this study. The ﬁrst epoch (E1) runs from 1956 to 1982 and the second epoch (E2) from 1983 to 2010. Location-speciﬁc changes in rainfall anomalies from E1 to E2 throughout the Hawaiian Islands are examined, illustrating that the greatest difference in rainfall between epochs is found on the climatologically drier sides (i.e., south and west) of the islands. Variations in tropical sea surface temperatures and circulation features in the northern Paciﬁc Ocean have changed during La Niña wet seasons, thus changing La Niña–year rainfall.},
	language = {en},
	number = {19},
	urldate = {2021-04-11},
	journal = {Journal of Climate},
	author = {O’Connor, Christopher F. and Chu, Pao-Shin and Hsu, Pang-Chi and Kodama, Kevin},
	month = oct,
	year = {2015},
	pages = {7809--7823},
}

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