International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
Since Year 2012 | Open Access | Double Blind Reviewed

ISSN: 2319-7064




Downloads: 133

Research Paper | Meteorology Science | India | Volume 5 Issue 3, March 2016


Dynamics of Heavy Rain Spells over India during 2005

S. S. Naik | P. S. Salvekar [2]


Abstract: High-impact mesoscale weather events, occurring in different parts of India in all seasons, lead to major weather and climate related disasters. In view of this, an attempt has been made in the present study to understand the dynamics of atmospheric circulation over the Indian region (50E-100E and EQ-30N) during super active monsoon period 21st-30th June and 22nd-31st July 2005 using NCEP/NCAR reanalyzed daily winds (u and v), temperature (T) from surface to 200 hPa to compute the divergence (D), vorticity (), vertical velocity (), static stability () and heat source (QH). (p) profiles clearly indicate the unstable zone between 850 to 650 hPa. The necessary condition of barotropic instability and condition of baroclinic instability are also satisfied in the layer 850-650 hPa for all the active monsoon days. Further, zonal (u) and meridional (v) winds, are examined in the zonal (x-p) and meridional (y-p) planes. It is noticed that there exist low level cyclonic circulations in the boundary layer over major portion of the country and abnormal increase in the meridional wind in the lower and middle troposphere. Significant increase in the cyclonic vorticity upto 300 hPa and the upward motion throughout in the troposphere with maximum value around 700 to 500 hPa and positive heat source explain the possibility of highly convective and unstable mid-tropospheric zone. The study indicates that there are few mesoscale systems embedded in the synoptic scale system that are already present in the large-scale monsoon circulation.


Keywords: Heavy rain spell, Dynamic instability, Mid-tropospheric cyclone, Cubic spline technique, summer monsoon


Edition: Volume 5 Issue 3, March 2016,


Pages: 357 - 362


How to Cite this Article?

S. S. Naik, P. S. Salvekar, "Dynamics of Heavy Rain Spells over India during 2005", International Journal of Science and Research (IJSR), Volume 5 Issue 3, March 2016, pp. 357-362, https://www.ijsr.net/get_abstract.php?paper_id=NOV161800

How to Share this Article?

Enter Your Email Address




Similar Articles with Keyword 'rain'

Downloads: 76

Research Paper, Meteorology Science, Ivory Coast, Volume 8 Issue 9, September 2019

Pages: 1350 - 1358

Analysis of the Occurrence of Extreme Rainfall and Hydrological Events in the Cavally River watershed (Western Cote dIvoire)

BROU Loukou Alexis | KOUASSI Kouakou Lazare [2] | KOUADIO Zile Alex | Abdoulaye BARRY | KONAN Kouakou Seraphin [2] | KONAN Koffi Felix [2]

Share this Article

Downloads: 88

Research Paper, Meteorology Science, India, Volume 4 Issue 4, April 2015

Pages: 3302 - 3305

Evaluation of the Effects of Hot Spring Water on Growth of Candida Albicans

Dr. Jhumu Manna | Dr. Asis Manna | Dr. Arnab Kr. Mandal | Dr. Debasis Das

Share this Article


Top