Dr. Pallath Pradeep
Kumar
Head, Department
of Atmospheric & Space Sciences
Has been to the following Universities
(now
Indian
University
of Manchester Institute of Science and
Post-Doctoral Research 1986-1988
With
RESEARCH INTERESTS
I am interested in studying the effect of
chemical impurities in clouds, their effect on cloud and ice nucleation and
on cloud electrification. Thunderstorm dynamics through network of lightning
electric field change sensors.
Some of the problems I have studied or
planning to study in future through laboratory simulation experiments are.
1.
The effect of chemical impurities on ice crystal nucleation,
growth and morphology. These experiments
to be performed at temperature and pressure which the clouds encounter in the
middle and upper troposphere, using cold room and thermal gradient chamber (planned).
2.
Laboratory studies on
mixed phase clouds which have been influenced by sulfuric acid in order to
understand the effects on laser (LIDAR) depolarization. (Completed)
3.
Studying the effect of chemical impurities on thunderstorm
electrification through non-inductive processes involving ice-graupel
collision (Planned).
4.
Laboratory studies on Organic aerosols as Cloud Condensation
Nuclei using Thermal-Gradient Diffusion chamber. (Work completed at
5.
Estimation of charge destroyed and charge center location
using network of antennas for lightning electric field measurements. (One
Campaign completed and more planned)
Established a
Cloud Physics Laboratory at the Department of Physics,
Ph.D. STUDENTS SUPERVISED:
"Experimental
studies on thunderstorm electrification"
Mr. Gurudas Mandal, University of Pune (
"Laboratory studies on the microphysical and
optical properties of
pollution clouds"
Ms.
Shubangi Tavker, University of Pune (
"Parameterization of cloudiness over
Mr. M.K. Rama Varma Raja,
Research projects undertaken
* Laboratory
Studies on IR transmission through clouds
Funded by:
Principal
Investigators: Dr. P. Pradeep Kumar,
Duration of
project: July 1994 to January 1998
* Laboratory and Field Measurements of
Thunderstorm Electrical parameters
Funded by: Department of
Science and Technology, Government of
Principal
Investigator:
Dr. P. Pradeep Kumar
Duration of
project: October 1997 to
October 2000
* Laboratory
Simulation of Cloud Electrification under Polluted Condition.
Funded
by Department of Science & Technology, Government of
Principal
Investigator: Dr. P. Pradeep
Kumar
Duration: December 2004 to December 2007.
On International Bodies
Member International Commission on Clouds and Precipitation,
2004 to 2008.
As ADVISORY COMMITTEE Member
to GOVERNMENT OF
Member
of the
“Program Advisory and Monitoring
Committee for Himalayan
Glaciology”,
Department
of Science and Technology, Ministry of Science and
Technology,
Government of
Member
of the
“Advisory Committee on Wind
Profiler Radio Acoustic Sounding
System” for
Department of Science and Technology, Ministry of Science and
Technology, Government of
Member of the "ADCOS Panel for Weather and Climate Science"
for the Indian Space Research Organization 2005.
out by the Government of Andhra Pradesh, India, 2005.
Member of the Program Implementation Committee for Severe Thunderstorm Observation
and Modeling (STORM) for Department of Science and Technology, Ministry of Science and Technology, Government of India, December 2005 to December 2008.
Training Schools Directed
Was course Co-Director
for the first "
Countries Visited
A few Selected Publications
J.P.D. Abbatt, K. Broekhuizen and P. Pradeep Kumar
“Cloud Condensation Nucleus Activity of Internally Mixed Ammonium Sulfate/ Organic Acid Aerosol Particles.
Atmospheric Environment, 39, 4767-4778, 2005.
K. Borekhuizen,
“Formation
of cloud condensation nuclei by oxidative processing: Unsaturated fatty acids”
J. Geophys. Res., Vol. 109, D24206, doi:10,
1029/2004JD005298, 2004
K. Borekhuizen, Pradeep Kumar P., and J.P.D. Abbatt
"Partially
Soluble Organics as Cloud Condensation Nuclei: Role of Trace Soluble and Surface Active Species"
Geophys. Res. Lett., 31, L01107
doi:10.1029/2003GL018203, 2004.
Pradeep Kumar P., K. Borekhuizen and J.P.D.
Abbatt
“Organic
acids as cloud condensation nuclei: Laboratory studies of highly soluble and
insoluble species”.
Atmospheric Chemistry and Physics, 3, 509-520, 2003.
G. Mandal
and Pradeep Kumar P.,
“A laboratory
study of ice nucleation due to electrical discharge”
Atmospheric Research, 61, 115-123, 2002.
S.
Tavker and Pradeep Kumar P.,
"Laser
depolarization studies of simulated crystallized H2O/H2SO4
clouds"
Atmospheric Research, 53, 219-230, 2000.
S.
Tavker, Pradeep Kumar P., H.R.
Carlon and M.E. Millham
"Isosbestic
Point: An Application for Aerosol Spectrometry"
J.
Geophys. Res., 102, D25,
30,017-30,022, 1997.
Pradeep Kumar P., Manohar G.K. and Kandalgaonkar S. S.
"Global distribution of nitric oxide produced by lightning
and its seasonal variation".
J. Geophys. Res., 100, D6, 11,203-11,208, 1995.
Pradeep Kumar P and Salvekar P. S.
"Studies
on monthly variation of static stability parameter using harmonic
analysis"
Int. J. Climatol. 15, 1283-1294, 1995.
R.E.
Amritkar and Pradeep Kumar P
“Interpolation
of Data using nonlinear and chaotic
system analysis"
J. Geophys. Res., 100, D2, 3149-3154, 1995.
Pradeep
Kumar P and Saunders C P R
"Charge
transfer during single crystal interaction with a rimed target."
J. Geophysical Res., 94 D 11, 13099 - 13102, 1989.
Pradeep Kumar P and
Rai J
"
Electrostatic field measurement and the
mechanism of intracloud discharge."
Annales Geophysicae, 4, 609 - 611, 1986.
Pradeep Kumar P and
Rai J
"
Electric field recovery and charge
regeneration after
lightning."
Annales Geophysicae, 3, 761 - 766,
1985.