ICTS:28770

Video URL

Interaction of atmospheric cold pools with background flow

Interaction of atmospheric cold pools with background flow

(2024). Interaction of atmospheric cold pools with background flow. SciVideos. https://youtu.be/5u-MjKBjt4A

Interaction of atmospheric cold pools with background flow. SciVideos, May. 30, 2024, https://youtu.be/5u-MjKBjt4A 

          @misc{ scivideos_ICTS:28770,
            doi = {},
            url = {https://youtu.be/5u-MjKBjt4A},
            author = {},
            keywords = {},
            language = {en},
            title = {Interaction of atmospheric cold pools with background flow},
            publisher = {},
            year = {2024},
            month = {may},
            note = {ICTS:28770 see, \url{https://scivideos.org/icts-tifr/28770}}
          }
Sridhar Balasubramanian
Talk numberICTS:28770
Source RepositoryICTS-TIFR
Source EventTheoretical and Practical Perspectives in Geophysical Fluid Dynamics
Collection

Abstract

Atmospheric Cold Pools (ACP) or regions of large-scale masses of cold air are often observed beneath precipitating deep convective clouds as a result of rain evaporation. An ACP is typically identified as a drop in air temperature that is greater than 10C within a period of 30 minutes to an hour at a given location. The dense air pockets relative to warmer surroundings sink and lead to low-level outflows that may propagate as gravity currents. It has been postulated that propagating ACPs could trigger secondary convection when ensuing gravity currents undercut and mechanically lifts warm air to the level of free convection. Detailed understanding of ACP dynamics has been stymied by the lack of high-resolution field data or numerical simulations, in particular in cases where a cold-pool induced gravity current is propagating in an ambience with a mean flow. As such, and motivated by observations of ACPs in the Bay of Bengal during recent MISO-BOB field studies, laboratory experiments we...