University of Cambridge > Talks.cam > British Antarctic Survey > Effects of Current Flow in the Global Circuit on Winter Storm Vorticity and Polar Surface Pressures

  Browse A-Z

Log in

University Account External (via Google)

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹī¸ Information

Effects of Current Flow in the Global Circuit on Winter Storm Vorticity and Polar Surface Pressures

Download to your calendar using vCal

If you have a question about this talk, please contact Tracy Moffat-Griffin .

Analysis of meteorological gridded data shows responses of atmospheric dynamics to external forcing (solar wind) and internal forcing (low latitude thundercloud current output) of the global electric circuit. This affects the downward flow of current density through layer clouds, and the space (unipolar) charge at cloud boundaries and at droplet concentration gradients within clouds. Our working model involves charges on ice forming nuclei enhancing contact ice nucleation and precipitation, for example in the layer clouds in the warm front region of winter cyclones. It also involves charges on CCN affecting their rates of being scavenged by droplets, and eventually affecting droplet size distributions and cloud cover.

This talk is part of the British Antarctic Survey series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Institute of Metabolic Science (IMS), Level 4 ATC, Seminar rooms 1,2 & 3 English Faculty Building GR04 AstraZeneca, City House, Hills Road Cambridge CB2 1RY

Other talks

The United States of America at 250: Reflections on the Past, Present and Future of Independence Cambridge RNA Club - IN PERSON Organiser's Welcome Animating urbanism: the demotic multiplicities of seeing cities digitally Afternoon Break Morning Tea and Coffee
 

Š 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity