| Atmospheric Structure and Dynamics Group | ||||||||||
|
The Group
Objectives:
The group aims to study and
diagnose the atmosphere through
accurate, long-term, and comprehensive sensing using radio and optical
waves both by active and passive means. Interests and fields of
research of the group includes, study of Middle Atmospheric
Dynamics
with special emphasis on tropospheric and lower stratospheric structure
and dynamics and on mesosphere and lower thermosphere. The group interests are in the study
of regional and global atmospheric boundary layer
characteristics, global distribution of tropospheric water vapor,
Indian Summer Monsoon, local, seasonal and global variability of
gravity and planetary waves with special focus on source mechanisms,
its impact on tropopause, low latitude mesospheric dynamics with
emphasis on mesospheric echo source mechanism, long term variability of
background winds and temperature structure, mesospheric temperature
inversion and the role of gravity wave-tidal interaction, to study
long-term variability of the atmosphere, and interactions between waves
at different time scales.
The group is also involved in the
studies of Changes
in middle atmospheric thermal structure and circulation due
to major sudden stratospheric warming events, Relation among
Sporadic sodium, Sporadic E, Field Aligned irregularities, and neutral
winds, study of the characteristics of generation as well as the
vertical propagation of internal atmospheric gravity waves in the lower
and middle atmosphere.
|
||||||||||
|
Facilities:
The group operates, maintains the following systems/ instruments and provides data (both raw data and analysed) to interested scientists.
ASDG utilizes both ground based systems mentioned above along with spaceborne measurements and has a plan to build Rayleigh Doppler lidar and an MF Radar to meet its scientific objectives. The group is actively involved in NARL’s SAFAR programme. The group addresses the research problems with its band of five Scientists/Engineers :
The group has four research
students right now. Qualified and
interested candidates may approach for carrying out research in
relevant fields. |
| |
|
|
![]() |
|
|
![]() |
|
![]() |
![]() |