scholarly journals Spatial Distribution of Cloud Physical Parameters and Cloud Radiative Forcing over the Indian Summer Monsoon Region

2018 ◽  
Vol 6 (3) ◽  
pp. 65-68
Author(s):  
Pooja Rana ◽  
Keyword(s):  
Spatial Distribution ◽  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Radiative Forcing ◽  
Physical Parameters ◽  
Monsoon Region ◽  
Cloud Radiative Forcing ◽  
Summer Monsoon Region

Evaluation of NCMRWF unified model vertical cloud structure with CloudSat over the Indian summer monsoon region

2016 ◽  
Author(s):  
A. Jayakumar ◽  
Ashu Mamgain ◽  
A. S. Jisesh ◽  
Saji Mohandas ◽  
R. Rakhi ◽  
...  
Keyword(s):  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Unified Model ◽  
Monsoon Region ◽  
Cloud Structure ◽  
Summer Monsoon Region

scholarly journals Sensitivity of speleothem records in the Indian Summer Monsoon region to dry season infiltration

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Elli R. Ronay ◽  
Sebastian F. M. Breitenbach ◽  
Jessica L. Oster
Keyword(s):  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Dry Season ◽  
Monsoon Region ◽  
Summer Monsoon Region

scholarly journals Land surface processes over Indian summer monsoon region: A review

MAUSAM ◽  
2021 ◽  
Vol 70 (4) ◽  
pp. 691-708
Author(s):  
U. C. MOHANTY ◽  
H. P. NAYAK ◽  
P. SINHA ◽  
K. K. OSURI ◽  
D. NIYOGI
Keyword(s):  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Land Surface ◽  
Surface Processes ◽  
Monsoon Region ◽  
Land Surface Processes ◽  
Summer Monsoon Region

scholarly journals Investigation of negative cloud radiative forcing over the Indian subcontinent and adjacent oceans during the summer monsoon season

2014 ◽  
Vol 14 (13) ◽  
pp. 6739-6758 ◽  
Author(s):  
B. V. Thampi ◽  
R. Roca
Keyword(s):  
Summer Monsoon ◽  
Radiative Forcing ◽  
Indian Monsoon ◽  
Indian Subcontinent ◽  
Monsoon Season ◽  
Radiative Properties ◽  
Monsoon Region ◽  
Summer Monsoon Season ◽  
Cloud Radiative Forcing ◽  
Indian Monsoon Region

Abstract. Radiative properties of clouds over the Indian subcontinent and nearby oceanic regions (0–25° N, 60–100° E) during the Asian summer monsoon season (June–September) are investigated using the Clouds and Earth's Radiant Energy System (CERES) top-of-the-atmosphere (TOA) flux data. Using multiyear satellite data, the net cloud radiative forcing (NETCRF) at the TOA over the Indian region during the Asian monsoon season is examined. The seasonal mean NETCRF is found to be negative (with its magnitude exceeding ~30 Wm−2) over (1) the northern Bay of Bengal (close to the Myanmar–Thailand coast), (2) the Western Ghats and (3) the coastal regions of Myanmar. Such strong negative NETCRF values observed over the Indian monsoon region contradict the assumption that near cancellation between LWCRF and SWCRF is a generic property of all tropical convective regions. The seasonal mean cloud amount (high and upper middle) and corresponding cloud optical depth observed over the three regions show relatively large values compared to the rest of the Indian monsoon region. Using satellite-derived cloud data, a statistical cloud vertical model delineating the cloud cover and single-scattering albedo was developed for the three negative NETCRF regions. The shortwave (SW), longwave (LW) and net cloud radiative forcing over the three negative NETCRF regions are calculated using the rapid radiative transfer model (RRTM) with the cloud vertical model as input. The NETCRF estimated from CERES observations show good comparison with that computed using RRTM (within the uncertainty limit of CERES observations). Sensitivity tests are conducted using RRTM to identify the parameters that control the negative NETCRF observed over these regions during the summer monsoon season. Increase in atmospheric water vapor content during the summer monsoon season is found to influence the negative NETCRF values observed over the region.

scholarly journals A long-term observational analysis of aerosol-cloud-rainfall associations over Indian Summer Monsoon region

2016 ◽  
Author(s):  
Chandan Sarangi ◽  
Sachchida Nand Tripathi ◽  
Vijay P. Kanawade ◽  
Ilan Koren ◽  
D. Sivanand Pai
Keyword(s):  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Satellite Observations ◽  
Monsoon Region ◽  
Cloud Systems ◽  
Aerosol Cloud ◽  
Aerosol Loading ◽  
Surface Rainfall ◽  
Summer Monsoon Region ◽  
Ice Phase

Abstract. Monsoonal rainfall is the primary source of surface water in India. Using 12 years of in-situ and satellite observations, we examined association of aerosol loading with cloud fraction, cloud top pressure, cloud top temperature, and daily surface rainfall over Indian summer monsoon region (ISMR). The analyses showed positive correlations between aerosol loading and cloud properties as well as rainfall. A decrease in outgoing longwave radiation and increase in reflected shortwave radiation at the top of the atmosphere with an increase in aerosol loading further supported a seminal role of aerosols on cloud systems. Significant perturbation in liquid- and ice-phase microphysics was also evident over ISMR. For the polluted cases, delay in the onset of collision-coalescence processes and enhancement in the condensation efficiency, allows for more condensate mass to be lifted up to the mixed-colder phases. This results in the higher mass concentration of bigger sized ice-phase hydrometeors and, therefore, implies that the delayed rain processes eventually lead to more surface rainfall. Numerical simulation of a typical rainfall event case over ISMR using spectral bin microphysical scheme coupled with Weather Research Forecasting (WRF-SBM) model was also performed. Simulated microphysics also illustrated the initial suppression of warm rain coupled with increase in updraft velocity under high aerosol loading leads to enhanced super-cooled liquid droplets above freezing level and ice-phase hydrometeors, resulting in increased accumulated surface rainfall. Thus, both observational and numerical analysis suggest that high aerosol loading may induce cloud invigoration and thereby increasing surface rainfall over the ISMR. While the meteorological variability influence the strength of the observed positive associations, our results suggest that the persistent aerosol-associated deepening of cloud systems and intensification of surface rain amounts was applicable to all the meteorological sub-regimes over the ISMR. Hence, we believe that these results provide a step forward in our ability to address aerosol-cloud-rainfall associations based on satellite observations over ISMR.

Phase relation between CAPE and precipitation at diurnal scales over the Indian summer monsoon region

2015 ◽  
Vol 16 (3) ◽  
pp. 346-354 ◽  
Author(s):  
Kandula Venkata Subrahmanyam ◽  
Karanam Kishore Kumar ◽  
Alur Narendra Babu
Keyword(s):  
Summer Monsoon ◽  
Indian Summer Monsoon ◽  
Phase Relation ◽  
Monsoon Region ◽  
Summer Monsoon Region
Sign in / Sign up

Export Citation Format

Share Document