Breadcrumb الرئيسية أخبار ووسائط إعلام WMO virtual press conference 23 نوفمبر 2020 Press Conference Announcement Greenhouse Gas Bulletin. Annual report by WMO on atmospheric concentrations of carbon dioxide and other major greenhouse gases Prof Petteri Taalas, WMO Secretary-General Dr Oksana Tarasova, WMO Chief of Atmospheric and Environment Research Division Listen to the audio