Observed changes of global and western Pacific precipitation associated with global warming SST mode and mega-ENSO SST mode

Kim, Byeong-Hee; Ha, Kyung‐Ja

doi:10.1007/s00382-015-2524-2

Cited by 25 publications

(17 citation statements)

References 33 publications

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“…Many studies have indicated the connection between heat waves and the sea surface temperature. In addition, a correlation between the sea surface temperature and the diurnal temperature range (DTR) and precipitation has been reported previously [41][42][43][44]. Consistent with the findings over the Northern Hemisphere and Arabic regions [41,45], significant correlations between the characteristics of heat waves and AMO/IOBW were found in our study, probably because all the variables showed an increasing trend.…”

Section: Discussionsupporting

confidence: 80%

Trends of Heat Waves and Cold Spells over 1951–2015 in Guangzhou, China

Zhang

Chen

et al. 2017

Atmosphere

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Abstract:The global climate has changed significantly, characterized by the warming of the surface air temperature, which seriously affects public health. We examined the trends of extreme temperatures, heat waves and cold spells in a subtropical city of Guangzhou, China, during 1951. Specifically, the relationship between ENSO (El Niño-Southern Oscillation) events and heat waves/cold spells was discussed. The results of linear regression showed the annual mean temperature and extreme warm days increased (0.14 • C/decade and 6.26 days/decade) while extreme cold days decreased significantly (1.77 days/decade). Heat waves were more frequent, longer lasting and had stronger intensity over the past 65 years. In addition, the frequency, duration and intensity of heat waves were correlated with annual Atlantic Multi-decadal Oscillation (AMO) and Indian Ocean Basin-wide Warming (IOBW), while there were no significant differences in the characteristics of heat waves among an El Niño year, a La Niña year and a Neutral year. In contrast, neither significant trend nor association with ENSO events was observed for cold spells. In conclusion, our study indicated an obvious increasing trend for all aspects of heat waves in Guangzhou, China.

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Section: Discussionsupporting

confidence: 80%

Trends of Heat Waves and Cold Spells over 1951–2015 in Guangzhou, China

Zhang

Chen

et al. 2017

Atmosphere

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“…The strongest positive regressions are seen in the tropical Pacific; this may be related to trends in Pacific trade winds observed by England et al [2014]. Similarly, Kim and Ha [2015] show that there has been a pattern of precipitation in the tropical Pacific that has seen a strong positive regression since 1990, driven by global warming and natural decadal variability. We note that the Pacific Decadal Oscillation (PDO) index has generally been decreasing since the mid-1980s.…”

Section: Discussionmentioning

confidence: 78%

Tracking precipitation events in time and space in gridded observational data

White

Battisti

Skok

2017

Geophysical Research Letters

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Novel precipitation event data sets are created by tracking 3‐hourly observed rainfall in both time and space in the TRMM 3B42 and ERA‐Interim data sets. Relative to TRMM, ERA‐Interim data undersimulate the total number of events (factor of ∼0.5), and oversimulate the frequency of events lasting >5 days (factor of 1.6). Longer‐lasting events tend to have larger spatial footprints and higher intensity precipitation at any point in their lifetime, and thus contribute significantly more to total precipitation than shorter events. Precipitation changes in selected tropical and subtropical regions are attributed to different event characteristics: some to changes in event rainfall intensity, others to changes in the number of events. In the 40°S–40°N spatial average, the number of events lasting 1–5 days significantly increased from 1998 to 2014 in both the TRMM 3B42 and ERA‐Interim data. The event data sets, analysis scripts, and selected processed data are freely available online.

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“…Yun et al (2010) investigated the interdecadal change in the relationship between ENSO and the intraseasonal oscillation in East Asia. Kim and Ha (2015) investigated the changes in the observed precipitation and moisture transport induced by anthropogenic forcing and natural variability. Song et al's (2014) research found that Pacific decadal oscillation plays an important role in regulating the EASM-ENSO relationship in the twentieth century.…”

Section: Discussion and Summary A Discussionmentioning

confidence: 99%

A New Upper-Level Circulation Index for the East Asian Summer Monsoon Variability

Zhao

Huang

et al. 2015

Journal of Climate

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The East Asian summer monsoon (EASM) and its variability involve circulation systems in both the tropics and midlatitudes as well as in both the lower and upper troposphere. Considering this fact, a new EASM index (NEWI) is proposed based on 200-hPa zonal wind, which takes into account wind anomalies in the southern (about 58N), middle (about 208N), and northern areas (about 358N) of East Asia. The NEWI can capture the interannual EASM-related climate anomalies and the interdecadal variability well. Compared to previous indices, the NEWI shows a better performance in describing precipitation and air temperature variations over East Asia. It can also show distinct climate anomalous features in early and late summer. The NEWI is tightly associated with the East Asian-Pacific or the Pacific-Japan teleconnection, suggesting a possible role of internal dynamics in the EASM variability. Meanwhile, the NEWI is significantly linked to El Niño-Southern Oscillation and tropical Indian Ocean sea surface temperature anomalies. Furthermore, the NEWI is highly predictable in the ENSEMBLES models, indicating its advantage for operational prediction of the EASM. The physical mechanism of the EASM variability as represented by the NEWI is also explicit. Both warm advection anomalies of temperature by anomalous westerly winds and the advection of anomalous positive relative vorticity by northerly basic winds cause anomalous ascending motion over the mei-yu-changma-baiu rainfall area, and vice versa over the South China Sea area. Hence, this NEWI would be a good choice to study, monitor, and predict the EASM.

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Observed changes of global and western Pacific precipitation associated with global warming SST mode and mega-ENSO SST mode

Cited by 25 publications

References 33 publications

Trends of Heat Waves and Cold Spells over 1951–2015 in Guangzhou, China

Trends of Heat Waves and Cold Spells over 1951–2015 in Guangzhou, China

Tracking precipitation events in time and space in gridded observational data

A New Upper-Level Circulation Index for the East Asian Summer Monsoon Variability

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