Deadline is December, 15th, 2011 for the submission of abstracts to the session "Urban climate and air pollution in a changing
climate" at the International Geographical Congress, Cologne, Germany, 26-30 August, 2012. See
https://igc2012.org/?page_id=535&ses_id=5053098e36f3b80c6a95b44bff5ddbd4