A Comparative Study of the Atmospheric Layers below First Lifting Condensation Level for Instantaneous Pre-Monsoon Thunderstorm Occurrence at Agartala (23o30’N, 91o15’E) and Ranchi (23o14’N, 85o14’E) of India

Sarbari Ghosh; Utpal Kumar De

doi:10.1007/s00376-997-0048-3

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Volume 14 Issue 1

Jan. 1997

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Article > ADVANCES IN ATMOSPHERIC SCIENCES > 1997 > 14(1): 93-102

A Comparative Study of the Atmospheric Layers below First Lifting Condensation Level for Instantaneous Pre-Monsoon Thunderstorm Occurrence at Agartala (23o30’N, 91o15’E) and Ranchi (23o14’N, 85o14’E) of India

1.
Atmospheric Science Research, Department of Physics, Jadavpur University, Calcutta 700 032, India,

doi: 10.1007/s00376-997-0048-3

Abstract
References
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Abstract:
An attempt has been made to investigate the role of vertical wind shear, corrective instability and the thermodynamic parameter (θes - θe) below the first lifting condensation level (FLCL) in the occurrence of instanta-neous premonsoon thunderstorm over Agartala (AGT) and Ranchi (RNC) at 12 GMT Radiosonde data of 1988 have been utilized here. The study has however been confined to 1000 hPa-500 hPa range at most Here the convectively unstable layers with positive vertical wind shear upto 500 hPa have been termed as ‘Fa?vourable Layers’ (FL) and the level at which an initially stable layer turns out to be convectively unstable for the first time has been termed as ‘Transition Level’ (TL). It is observed that the changes in vertical wind shear are positive at TL at the time of occurrence of thunderstorm (TS) and the corresponding change is negative on fair-weather situa?tion Moreover, the 90% confidence interval for (θes - θe) reveals that for AGT the upper layer thermodynamic characteristic is important at the time of occurrence of TS whereas for RNC, the value of (θes - θe) at the surface is much more effective
- Convective instability,
- Vertical wind shear,
- Saturated equivalent potential temperature,
- Equivalent poten-tial temperature,
- Confidence interval
References

[1]	Yufan DAI, Qingqing LI, Xinhang LIU, Lijuan WANG, 2023: A Lagrangian Trajectory Analysis of Azimuthally Asymmetric Equivalent Potential Temperature in the Outer Core of Sheared Tropical Cyclones, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 1689-1706. doi: 10.1007/s00376-023-2245-0
[2]	ZHOU Yushu, 2013: Effects of Vertical Wind Shear, Radiation and Ice Microphysics on Precipitation Efficiency during a Torrential Rainfall Event in China, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 1809-1820. doi: 10.1007/s00376-013-3007-1
[3]	YU Jinhua, TAN Zhemin, Yuqing WANG, 2010: Effects of Vertical Wind Shear on Intensity and Rainfall Asymmetries of Strong Tropical Storm Bilis (2006), ADVANCES IN ATMOSPHERIC SCIENCES, 27, 552-561. doi: 10.1007/s00376-009-9030-6
[4]	Lu LIU, Lingkun RAN, Shouting GAO, 2016: Evolution of Instability before and during a Torrential Rainstorm in North China, ADVANCES IN ATMOSPHERIC SCIENCES, 33, 110-120. doi: 10.1007/s00376-015-5080-0
[5]	Qi GAO, Qingqing LI, Yufan DAI, 2020: Characteristics of the Outer Rainband Stratiform Sector in Numerically Simulated Tropical Cyclones: Lower-Layer Shear versus Upper-Layer Shear, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 399-419. doi: 10.1007/s00376-020-9202-y
[6]	ZHOU Lian-Tong, Chi-Yung TAM, ZHOU Wen, Johnny C. L. CHAN, 2010: Influence of South China Sea SST and the ENSO on Winter Rainfall over South China, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 832-844. doi: 10.1007/s00376--009-9102-7
[7]	Xun LI, Noel E. DAVIDSON, Yihong DUAN, Kevin J. TORY, Zhian SUN, Qinbo CAI, 2020: Analysis of an Ensemble of High-Resolution WRF Simulations for the Rapid Intensification of Super Typhoon Rammasun (2014), ADVANCES IN ATMOSPHERIC SCIENCES, 37, 187-210. doi: 10.1007/s00376-019-8274-z
[8]	ZONG Huijun, WU Liguang, 2015: Re-examination of Tropical Cyclone Formation in Monsoon Troughs over the Western North Pacific, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 924-934. doi: 10.1007/s00376-014-4115-2
[9]	Keon-Tae SOHN, Deuk-Kyun RHA, Young-Kyung SEO, 2003: The 3-Hour-Interval Prediction of Ground-Level Temperature in South Korea Using Dynamic Linear Models, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 575-582. doi: 10.1007/BF02915500
[10]	Lei Xiaoen, 1985: EFFECT OF WIND VERTICAL SHEAR ON DIFFUSION CHARACTERISTICS IN THE MESOSCALE RANGE, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 225-233. doi: 10.1007/BF03179754
[11]	Gao Shouting, 2000: The Instability of the Vortex Sheet along the Shear Line, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 525-537. doi: 10.1007/s00376-000-0016-7
[12]	Shen Xinyong, Ni Yunqi, Ding Yihui, 2002: On Problem of Nonlinear Symmetric Instability in Zonal Shear Flow, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 350-364. doi: 10.1007/s00376-002-0027-7
[13]	Liao Dongxian, 1985: DETERMINATION OF THE DISTANCE BETWEEN TWO ADJACENT STATIONS, THE OBSERVATIONAL VERTICAL INCREMENT AND THE OBSERVATIONAL TIME INTERVAL IN OPTIMUM SENSE, ADVANCES IN ATMOSPHERIC SCIENCES, 2, 316-324. doi: 10.1007/BF02677247
[14]	LI Xiangshu, GUO Xueliang, FU Danhong, 2013: TRMM-retrieved Cloud Structure and Evolution of MCSs over the Northern South China Sea and Impacts of CAPE and Vertical Wind Shear, ADVANCES IN ATMOSPHERIC SCIENCES, 30, 77-88. doi: 10.1007/s00376-012-2055-2
[15]	Steinar ORRE, Yongqi GAO, Helge DRANGE, Eric DELEERSNIJDER, 2008: Diagnosing Ocean Tracer Transport from Sellafield and Dounreay by Equivalent Diffusion and Age, ADVANCES IN ATMOSPHERIC SCIENCES, 25, 805-814. doi: 10.1007/s00376-008-0805-y
[16]	YAN Li, WANG Panxing, YU Yongqiang, LI Lijuan, WANG Bin, 2010: Potential Predictability of Sea Surface Temperature in a Coupled Ocean--Atmosphere GCM, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 921-936. doi: 10.1007/s00376-009-9062-y
[17]	Xun ZHU, 2003: Parameterization of the Non-Local Thermodynamic Equilibrium Source Function with Chemical Production by an Equivalent Two-Level Model, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 487-495. doi: 10.1007/BF02915493
[18]	Shuai WANG, Ralf TOUMI, 2018: Reduced Sensitivity of Tropical Cyclone Intensity and Size to Sea Surface Temperature in a Radiative-Convective Equilibrium Environment, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 981-993. doi: 10.1007/s00376-018-7277-5
[19]	XIN Yufei, Annette RINKE, BIAN Lingen, Klaus DETHLOFF, XIAO Cunde, Moritz MIELKE, 2010: Climate and Forecast Mode Simulations for Antarctica: Implications for Temperature and Wind, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 1453-1472. doi: 10.1007/s00376-010-9178-0
[20]	Yong LI, Siming LI, Yao SHENG, Luheng WANG, 2018: Data Assimilation Method Based on the Constraints of Confidence Region, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 334-345. doi: 10.1007/s00376-017-7045-y

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Manuscript History

Manuscript received: 10 January 1997

Manuscript revised: 10 January 1997

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

A Comparative Study of the Atmospheric Layers below First Lifting Condensation Level for Instantaneous Pre-Monsoon Thunderstorm Occurrence at Agartala (23o30’N, 91o15’E) and Ranchi (23o14’N, 85o14’E) of India

1. Atmospheric Science Research, Department of Physics, Jadavpur University, Calcutta 700 032, India,

Manuscript received: 1997-01-10
Manuscript revised: 1997-01-10

Abstract: An attempt has been made to investigate the role of vertical wind shear, corrective instability and the thermodynamic parameter (θes - θe) below the first lifting condensation level (FLCL) in the occurrence of instanta-neous premonsoon thunderstorm over Agartala (AGT) and Ranchi (RNC) at 12 GMT Radiosonde data of 1988 have been utilized here. The study has however been confined to 1000 hPa-500 hPa range at most Here the convectively unstable layers with positive vertical wind shear upto 500 hPa have been termed as ‘Fa?vourable Layers’ (FL) and the level at which an initially stable layer turns out to be convectively unstable for the first time has been termed as ‘Transition Level’ (TL). It is observed that the changes in vertical wind shear are positive at TL at the time of occurrence of thunderstorm (TS) and the corresponding change is negative on fair-weather situa?tion Moreover, the 90% confidence interval for (θes - θe) reveals that for AGT the upper layer thermodynamic characteristic is important at the time of occurrence of TS whereas for RNC, the value of (θes - θe) at the surface is much more effective

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