Head of international scientific projects in the field of “Climate change and its effects on ecology and economy”. Regional focus: Arctic Canada and Alaska (1975-1990), Svalbard (1983-2016), Fennoscandia (1974-2019), China (1987-2016), Southeast Asia (2008), Arab countries: Tunisia, Libya, Egypt, Saudi Arabia, Jordan, Syria (2005-2024), South Caucasus (2001-2024), Antarctica (1985), North and South America (1972-2018). Thematic focus: polar and arid climates, desertification, climatic extremes and catastrophic events.