Impact of Moisture Transport and Boundary Layer Processes on a Very Severe Cyclonic Storm Using the WRF Model

S. S. V. S. Ramakrishna; Nellipudi Nanaji Rao; B. Ravi Srinivasa Rao; P. Srinivasa Rao; C. V. Srinivas; Hari Prasad Dasari

doi:10.1007/s00024-019-02279-0

Impact of Moisture Transport and Boundary Layer Processes on a Very Severe Cyclonic Storm Using the WRF Model

S. S. V. S. Ramakrishna, Nellipudi Nanaji Rao, B. Ravi Srinivasa Rao, P. Srinivasa Rao, C. V. Srinivas, Hari Prasad Dasari

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

In this work the very severe cyclonic storm Thane which formed over the Bay of Bengal during 25–31 December 2011 and struck the East coast of India was simulated using the Weather Research and Forecasting (WRF)-Advanced Research WRF (WRF-ARW) mesoscale model. Normally, very severe cyclones rarely form in this late season. The moisture transport, intensity, track and structure of the cyclone is analyzed through vertically integrated moisture flux convergence and planetary boundary layer physics of the Yonsei University (YSU), Mellor–Yamada–Janjic (MYJ) and Asymmetrical Convective Model version 2 (ACM2) schemes. Cyclonic circulation and moisture convergence are seen 6 days ahead of the development of the cyclone and strengthened by the transport of moisture advected from the South China Sea. From the three planetary boundary layer (PBL) schemes, the YSU scheme gives better results both qualitatively and quantitatively for the moisture flux convergence. The MYJ scheme produced the least errors for cyclone intensity from genesis to the landfall stage, while the ACM2 scheme gave better results after landfall. The track of the cyclone with the YSU scheme produced the least errors throughout the life cycle which gives the least landfall error. The structure of the cyclone in terms of tangential winds, the spatial distribution of cloud bands, vertical cross section of temperature anomaly, relative humidity and vertical winds was well simulated by the ACM2 scheme.

Original language	English (US)
Pages (from-to)	5445-5461
Number of pages	17
Journal	Pure and Applied Geophysics
Volume	176
Issue number	12
DOIs	https://doi.org/10.1007/s00024-019-02279-0
State	Published - Jul 29 2019

Bibliographical note

KAUST Repository Item: Exported on 2021-03-09
Acknowledgements: The work presented in this paper is carried out under a research grant from the Board of Research in Nuclear Sciences (BRNS), DAE, Mumbai, India, vide reference 2008/36/89-BRNS/4019 dated 23/03/2009, and the authors acknowledge the same. The authors are thankful to the TRMM, NCEP FNL and GFS data centers for keeping the data sets available in the public domain. The authors also acknowledge the India Meteorological Department for making available all the observations for validation.

ASJC Scopus subject areas

Geochemistry and Petrology
Geophysics

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10.1007/s00024-019-02279-0

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title = "Impact of Moisture Transport and Boundary Layer Processes on a Very Severe Cyclonic Storm Using the WRF Model",

abstract = "In this work the very severe cyclonic storm Thane which formed over the Bay of Bengal during 25–31 December 2011 and struck the East coast of India was simulated using the Weather Research and Forecasting (WRF)-Advanced Research WRF (WRF-ARW) mesoscale model. Normally, very severe cyclones rarely form in this late season. The moisture transport, intensity, track and structure of the cyclone is analyzed through vertically integrated moisture flux convergence and planetary boundary layer physics of the Yonsei University (YSU), Mellor–Yamada–Janjic (MYJ) and Asymmetrical Convective Model version 2 (ACM2) schemes. Cyclonic circulation and moisture convergence are seen 6 days ahead of the development of the cyclone and strengthened by the transport of moisture advected from the South China Sea. From the three planetary boundary layer (PBL) schemes, the YSU scheme gives better results both qualitatively and quantitatively for the moisture flux convergence. The MYJ scheme produced the least errors for cyclone intensity from genesis to the landfall stage, while the ACM2 scheme gave better results after landfall. The track of the cyclone with the YSU scheme produced the least errors throughout the life cycle which gives the least landfall error. The structure of the cyclone in terms of tangential winds, the spatial distribution of cloud bands, vertical cross section of temperature anomaly, relative humidity and vertical winds was well simulated by the ACM2 scheme.",

author = "Ramakrishna, {S. S. V. S.} and Rao, {Nellipudi Nanaji} and {Ravi Srinivasa Rao}, B. and {Srinivasa Rao}, P. and Srinivas, {C. V.} and Dasari, {Hari Prasad}",

note = "KAUST Repository Item: Exported on 2021-03-09 Acknowledgements: The work presented in this paper is carried out under a research grant from the Board of Research in Nuclear Sciences (BRNS), DAE, Mumbai, India, vide reference 2008/36/89-BRNS/4019 dated 23/03/2009, and the authors acknowledge the same. The authors are thankful to the TRMM, NCEP FNL and GFS data centers for keeping the data sets available in the public domain. The authors also acknowledge the India Meteorological Department for making available all the observations for validation.",

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doi = "10.1007/s00024-019-02279-0",

language = "English (US)",

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T1 - Impact of Moisture Transport and Boundary Layer Processes on a Very Severe Cyclonic Storm Using the WRF Model

AU - Ramakrishna, S. S. V. S.

AU - Rao, Nellipudi Nanaji

AU - Ravi Srinivasa Rao, B.

AU - Srinivasa Rao, P.

AU - Srinivas, C. V.

AU - Dasari, Hari Prasad

N1 - KAUST Repository Item: Exported on 2021-03-09 Acknowledgements: The work presented in this paper is carried out under a research grant from the Board of Research in Nuclear Sciences (BRNS), DAE, Mumbai, India, vide reference 2008/36/89-BRNS/4019 dated 23/03/2009, and the authors acknowledge the same. The authors are thankful to the TRMM, NCEP FNL and GFS data centers for keeping the data sets available in the public domain. The authors also acknowledge the India Meteorological Department for making available all the observations for validation.

PY - 2019/7/29

Y1 - 2019/7/29

N2 - In this work the very severe cyclonic storm Thane which formed over the Bay of Bengal during 25–31 December 2011 and struck the East coast of India was simulated using the Weather Research and Forecasting (WRF)-Advanced Research WRF (WRF-ARW) mesoscale model. Normally, very severe cyclones rarely form in this late season. The moisture transport, intensity, track and structure of the cyclone is analyzed through vertically integrated moisture flux convergence and planetary boundary layer physics of the Yonsei University (YSU), Mellor–Yamada–Janjic (MYJ) and Asymmetrical Convective Model version 2 (ACM2) schemes. Cyclonic circulation and moisture convergence are seen 6 days ahead of the development of the cyclone and strengthened by the transport of moisture advected from the South China Sea. From the three planetary boundary layer (PBL) schemes, the YSU scheme gives better results both qualitatively and quantitatively for the moisture flux convergence. The MYJ scheme produced the least errors for cyclone intensity from genesis to the landfall stage, while the ACM2 scheme gave better results after landfall. The track of the cyclone with the YSU scheme produced the least errors throughout the life cycle which gives the least landfall error. The structure of the cyclone in terms of tangential winds, the spatial distribution of cloud bands, vertical cross section of temperature anomaly, relative humidity and vertical winds was well simulated by the ACM2 scheme.

AB - In this work the very severe cyclonic storm Thane which formed over the Bay of Bengal during 25–31 December 2011 and struck the East coast of India was simulated using the Weather Research and Forecasting (WRF)-Advanced Research WRF (WRF-ARW) mesoscale model. Normally, very severe cyclones rarely form in this late season. The moisture transport, intensity, track and structure of the cyclone is analyzed through vertically integrated moisture flux convergence and planetary boundary layer physics of the Yonsei University (YSU), Mellor–Yamada–Janjic (MYJ) and Asymmetrical Convective Model version 2 (ACM2) schemes. Cyclonic circulation and moisture convergence are seen 6 days ahead of the development of the cyclone and strengthened by the transport of moisture advected from the South China Sea. From the three planetary boundary layer (PBL) schemes, the YSU scheme gives better results both qualitatively and quantitatively for the moisture flux convergence. The MYJ scheme produced the least errors for cyclone intensity from genesis to the landfall stage, while the ACM2 scheme gave better results after landfall. The track of the cyclone with the YSU scheme produced the least errors throughout the life cycle which gives the least landfall error. The structure of the cyclone in terms of tangential winds, the spatial distribution of cloud bands, vertical cross section of temperature anomaly, relative humidity and vertical winds was well simulated by the ACM2 scheme.

UR - http://hdl.handle.net/10754/667980

UR - http://link.springer.com/10.1007/s00024-019-02279-0

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U2 - 10.1007/s00024-019-02279-0

DO - 10.1007/s00024-019-02279-0

M3 - Article

SN - 0033-4553

VL - 176

SP - 5445

EP - 5461

JO - Pure and Applied Geophysics

JF - Pure and Applied Geophysics

IS - 12

ER -

Impact of Moisture Transport and Boundary Layer Processes on a Very Severe Cyclonic Storm Using the WRF Model

Abstract

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