TY JOUR TI AIR TEMPERATURE EXTREMA DYNAMICS ON THE BACKGROUND OF CLIMATE WARMING IN ULUG-KHEM BASIN OF THE TYVA REPUBLIC KW climate warming KW air temperatures extrema KW basin JO Bulletin of KSAU AU Andreychik, M.F. AU Mongush, L.D. PY 2013 IS PB Krasnoyarsk State Agrarian University