The Indian summer monsoon during peaks in the 11 year sunspot cycle

Loon, Harry van; Meehl, Gerald A.

doi:10.1029/2012gl051977

Cited by 22 publications

(13 citation statements)

References 19 publications

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“…Nevertheless, if these boundaries move significantly with the solar cycle, their behavioral differences could reveal the solar cycle imprints. Many studies present evidence of a poleward shift or expansion in the high solar activity conditions of the Indian monsoon (Kodera 2004;van Loon and Meehl 2012), the Hadley cell, the subtropical jet, the Ferrel cell (Haigh 2003;Gleisner and Thejll 2003;Haigh et al 2005;Br€ onnimann et al 2007), and so on, and an equatorward shift in the low solar activity conditions of North Atlantic storm tracks (Martin-Puertas et al 2012). The differences in the location of the mei-yu rainband under different solar conditions presented in this paper are consistent with the oscillation of the northern boundary of the EASM related to the solar cycle as reported by Zhao et al (2012) and Wang and Zhao (2012).…”

Section: Discussionmentioning

confidence: 97%

“…The possible preservation of solar cycle signals in precipitation has been reported from several monsoon regions, including South Asia, West Africa, and North America (e.g., Kodera 2004;van Loon et al 2004;Kodera and Shibata 2006;Narasimha and Bhattacharyya 2010;van Loon and Meehl 2012). This resembles the relationship between the solar cycle and other climate phenomena; however, the apparent correlation between the solar cycle and monsoon precipitation may differ over time and from region to region, even to the extent of adjacent regions having correlations with the opposite sign (e.g., Thresher 2002;Meehl et al 2009).…”

Section: Introductionmentioning

confidence: 98%

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Robust Response of the East Asian Monsoon Rainband to Solar Variability

Zhao

Wang

2014

Journal of Climate

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This study provides evidence of the robust response of the East Asian monsoon rainband to the 11-yr solar cycle and first identify the exact time period within the summer half-year with the strongest correlation between the mean latitude of the rainband (MLRB) over China and the sunspot number (SSN). This period just corresponds to the climatological-mean East Asian mei-yu season, characterized by a largescale quasi-zonal monsoon rainband (i.e., 22 May-13 July). Both the statistically significant correlation and the temporal coincidence indicate a robust response of the mei-yu rainband to solar variability during the last five solar cycles. During the high SSN years, the mei-yu MLRB lies 1.28 farther north, and the amplitude of its interannual variations increases when compared with low SSN years. The robust response of monsoon rainband to solar forcing is related to an anomalous general atmospheric pattern with an up-down seesaw and a north-south seesaw over East Asia.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Robust Response of the East Asian Monsoon Rainband to Solar Variability

Zhao

Wang

2014

Journal of Climate

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“…Numerous model studies have suggested that the spectrum solar irradiance interacting with ozone can strongly affect stratospheric temperature and circulation, which then propagate downward to alter tropospheric general circulation (Haigh 1996;Matthes et al 2006). Statistical correlations between the 11-year solar activity and the decadal climate variability have been found in the observations (Currie 1993;Soon 2005;Van Loon and Meehl 2012). At the peak years of the 11-year solar cycle, the climatological precipitation maxima in the tropical Pacific were found to be strengthened, further modulating the Pacific climate system, i.e., Pacific Decadal Oscillation (PDO) and El Niño-Southern Oscillation (ENSO) (Van Loon et al 2007;Meehl et al 2008.…”

Section: Introductionmentioning

confidence: 99%

Decadal variability of northern Asian winter monsoon shaped by the 11-year solar cycle

et al. 2019

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Climate signals associated with 11-year sunspot cycle have been extensively studied in various regions of the northern hemisphere, but the precise mechanisms remain elusive. Asian winter monsoon (AWM) is the most powerful circulation system on the Earth, yet its relationship with the 11-year solar cycle has not been explored. Here the response of AWM to the 11-year solar forcing is explored by analysis of numerical experiment results obtained from the Community Earth System Model-Last Millennium Ensemble (CESM-LME) modeling project. We show that a strong 11-year solar cycle can excite a resonant response of the intrinsic leading mode of the AWM variability, resulting in a significant signal of decadal variation. The leading mode, characterized by a warm Arctic and cold Siberia, responds to the maximum solar irradiance with a peculiar 3 to 4-year delay. We propose a new mechanism to explain this delayed response, in which the 11-year solar cycle affects the AWM via modulating Arctic sea ice variation during the preceding summer. At the peak of the accumulative solar irradiance (i.e., 4 years after the maximum solar irradiance), the Arctic sea ice concentration reaches a minimum over the Barents-Kara Sea region accompanied by an Arctic sea surface warming, which then persists into the following winter, causing Arctic high-pressure extend to the Ural mountain region, which enhances Siberian High and causes a bitter winter over the northern Asia.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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“…These components are not independent of each other, as for example the ASM itself is influenced by ENSO (e.g. Webster and Yang, 1992), the QBO , or the 11-year solar cycle (van Loon and Meehl, 2012). As shown by Kunze et al (2010), the strength of the ASM has some influence on the observed H 2 O maximum and O 3 minimum mixing ratios confined by the AMA, with increasing H 2 O and decreasing O 3 mixing ratios during strong ASM seasons.…”

Section: Introductionmentioning

confidence: 99%

Interannual variability of the boreal summer tropical UTLS in observations and CCMVal-2 simulations

et al. 2016

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Abstract. During boreal summer the upper troposphere/lower stratosphere (UTLS) in the Northern Hemisphere shows a distinct maximum in water vapour (H2O) mixing ratios and a coincident minimum in ozone (O3) mixing ratios, both confined within the Asian monsoon anticyclone (AMA). This well-known feature has been related to transport processes emerging above the convective systems during the Asian summer monsoon (ASM), further modified by the dynamics of the AMA. We compare the ability of chemistry–climate models (CCMs) to reproduce the climatological characteristics and variability of H2O, O3, and temperature in the UTLS during the boreal summer with MIPAS satellite observations and ERA-Interim reanalyses. By using a multiple linear regression model the main driving factors, the strength of the ASM, the quasi-biennial oscillation (QBO), and the El Niño–Southern Oscillation (ENSO), are separated. The regression patterns related to ENSO show a coherent, zonally asymmetric signal for temperatures and H2O mixing ratios for ERA-Interim and the CCMs and suggest a weakening of the ASM during ENSO warm events. The QBO modulation of the lower-stratospheric temperature near the Equator is well represented as a zonally symmetric pattern in the CCMs. Changes in H2O and O3 mixing ratios are consistent with the QBO-induced temperature and circulation anomalies but less zonally symmetric than the temperature pattern. Regarding the ASM, the results of the regression analysis show for ERA-Interim and the CCMs enhanced H2O and reduced O3 mixing ratios within the AMA for stronger ASM seasons. The CCM results can further confirm earlier studies which emphasize the importance of the Tibetan Plateau/southern slope of the Himalayas as the main source region for H2O in the AMA. The results suggest that H2O is transported towards higher latitudes at the north-eastern edge of the AMA rather than towards low equatorial latitudes to be fed into the tropical pipe.

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The Indian summer monsoon during peaks in the 11 year sunspot cycle

Cited by 22 publications

References 19 publications

Robust Response of the East Asian Monsoon Rainband to Solar Variability

Robust Response of the East Asian Monsoon Rainband to Solar Variability

Decadal variability of northern Asian winter monsoon shaped by the 11-year solar cycle

Interannual variability of the boreal summer tropical UTLS in observations and CCMVal-2 simulations

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