An influence of quasi-biennial oscillation on the water vapor in tropic stratosphere

Shi, Chunhua; Bin, Zheng; Chen, Yuejuan; Zhou, Ru

doi:10.1117/12.795918

Cited by 7 publications

(6 citation statements)

References 16 publications

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“…Given its impact on northern hemispheric weather and climate and its role in ocean-atmosphere interaction and StratosphereTroposphere Exchange (STE), studies focusing on the Asian summer monsoon have been widely investigated [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. STE has a significant effect on transport across tropopause and spatial distribution of atmospheric component [16,17]. The Asian summer monsoon anticyclone (South Asia High) is one of the dominant features of the Asian summer monsoon [1,[18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

A Case Study of Mass Transport during the East-West Oscillation of the Asian Summer Monsoon Anticyclone

Luo

Song

Liu

et al. 2017

Advances in Meteorology

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We use ERA-Interim reanalysis, MLS observations, and a trajectory model to examine the chemical transport and tracers distribution in the Upper Troposphere and Lower Stratosphere (UTLS) associated with an east-west oscillation case of the anticyclone in 2016. The results show that the spatial distribution of water vapor (H 2 O) was more consistent with the location of the anticyclone than carbon monoxide (CO) at 100 hPa, and an independent relative high concentration center was only found in H 2 O field. At 215 hPa, although the anticyclone center also migrated from the Tibetan Mode (TM) to the Iranian Mode (IM), the relative high concentration centers of both tracers were always colocated with regions where upward motion was strong in the UTLS. When the anticyclone migrated from the TM, air within the anticyclone over Tibetan Plateau may transport both westward and eastward but was always within the UTLS. The relative high concentration of tropospheric tracers within the anticyclone in the IM was from the east and transported by the westward propagation of the anticyclone rather than being lifted from surface directly. Air within the relative high geopotential height centers over Western Pacific was partly from the main anticyclone and partly from lower levels.

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Section: Introductionmentioning

confidence: 99%

A Case Study of Mass Transport during the East-West Oscillation of the Asian Summer Monsoon Anticyclone

Luo

Song

Liu

et al. 2017

Advances in Meteorology

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“…In the lower stratosphere, the layer was situated at 21 to 28 km and had lower intensity. To visualize the structure more clearly, we applied a 22-to 30-month band-pass filter to the O 3 interannual anomalies (Figure 3(b)) and defined the variance ratio as the ratio between the variance in filtered results and the variance in interannual anomalies, following the method of Shi et al [18]. The variance ratio is shown in Figure 3(c).…”

Section: O 3 and No Qbo Characteristics And Dynamical Analysesmentioning

confidence: 99%

The quasi-biennial and semi-annual oscillation features of tropical O3, NO2, and NO3 revealed by GOMOS satellite observations for 2002–2008

Liu

Wang

et al. 2011

Chin. Sci. Bull.

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3 and the vertical velocity of the residual circulation (w-star), we conclude that dynamic transport is the principal factor controlling the QBO pattern of O 3 . Under the influence of vertical transport, the QBO signals of O 3 originate in the middle stratosphere and propagate downward along with the w-star anomalies over the equator. The residual circulation has a significant role in tropical regions, regardless of altitude, while in extratropical regions, dynamic effects are important in some years in the lower stratosphere. In the middle stratosphere, dynamic transport is most efficient in the Southern Hemisphere. We also analyzed NO 2 anomalies and found that their QBO pattern was deep and stationary in the middle and upper stratosphere over the equator. This was due to the large depth over which w-star was anomalous. The latitudinal structure of NO 2 was asymmetric in extratropical areas in the middle stratosphere, but in the upper layers, the QBO pattern and dynamic influences were only observed in tropical zones. The interannual anomalies of NO 3 had an apparent SAO pattern in the tropical upper stratosphere because of different dynamic and chemical effects in different SAO phases. Chemical reactions may also have contributed to the QBO-type distribution of NO 2 and the SAO-type distribution of NO 3 . quasi-biennial oscillation, semi-annual oscillation, GOMOS satellite observation, stratospheric ozone, dynamic transportCitation: Liu Y, Lu C H, Wang Y, et al. The quasi-biennial and semi-annual oscillation features of tropical O 3 , NO 2 , and NO 3 revealed by GOMOS satellite observations for The quasi-biennial oscillation (QBO) of stratospheric zonal wind and the semi-annual oscillation (SAO) of upper stratospheric zonal wind in equatorial regions have been widely investigated since they were discovered. Previous studies have searched for an underlying explanation of these oscillations [1,2], their influences on the global stratosphere [3], and their dynamic mechanism [4]. However, only a few investigations have analyzed the effects of the QBO and SAO using satellite observations. These studies focused on the distribution characteristics of the atmospheric components individually [5-9], but did not report on the relationship between the constituents and the dynamic effects of the oscillations. The Global Ozone Monitoring by Occultation of Stars (GOMOS) stellar occultation instrument operates on ENVISAT, a sun-synchronous polar-orbiting satellite at approximately 800 km altitude and 98.55° inclination. GOMOS has provided long-term observation results from 2002 to 2008. These results offer a new perspective on the QBO and SAO. Some preliminary research was conducted on the distributions of O 3 , NO 2 , and NO 3 in 2003 using

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“…Moreover, in atmospheric circulation research, zonal-mean circulation is most commonly used. According to some studies, Brewer-Dobson circulation will affect lower stratospheric temperature and water [36,37]. Thus, it is useful to discuss the variations of Brewer-Dobson circulation and the evolution of atmospheric circulation anomalies caused by wave-current interaction in a quasi-geostrophic approximation at the angle of the zonal mean.…”

Section: Thermodynamic Reasonsmentioning

confidence: 99%

Intercomparing the Response of Tropospheric and Stratospheric Temperature to Two Types of El Niño Onset

Chang¹,

Shao²,

Shi³

et al. 2017

Advances in Meteorology

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, the response of stratospheric and tropospheric temperature in boreal winter to two previously defined types of El Niño [spring (SP) and summer (SU)] is investigated. The results show that, the response of temperature under SP onset involves a significant positive anomaly, with a symmetric distribution about the equator over the Indian Ocean region in the lower troposphere (850 hPa) and a negative anomaly in the lower stratosphere (50 hPa). Meanwhile, in the area 30 ∘ N and 30 ∘ S of the equator, most parts of the lower stratosphere feature a positive anomaly. This indicates that SP El Niño events are more conducive than SU events to warming the lower stratosphere. The atmospheric circulation structure over the tropical Indian Ocean is beneficial to the upward transfer of warm air to the upper layer. In contrast, the structure over the tropical Pacific Ocean favors the warming of upper air. On the other hand, the Eliassen-Palm (EP) flux is small and the heat flux is negative during SP-type events. Thus, the EP flux and Brewer-Dobson circulation decrease, making the temperature higher in the upper troposphere-lower stratosphere region at low latitudes.

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An influence of quasi-biennial oscillation on the water vapor in tropic stratosphere

Cited by 7 publications

References 16 publications

A Case Study of Mass Transport during the East-West Oscillation of the Asian Summer Monsoon Anticyclone

A Case Study of Mass Transport during the East-West Oscillation of the Asian Summer Monsoon Anticyclone

The quasi-biennial and semi-annual oscillation features of tropical O3, NO2, and NO3 revealed by GOMOS satellite observations for 2002–2008

Intercomparing the Response of Tropospheric and Stratospheric Temperature to Two Types of El Niño Onset

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