Climate Patterns Affecting Cold Season Air Pollution of Ulaanbaatar City, Mongolia oleh Erdenesukh Sumiya, Sandelger Dorligjav, Myagmartseren Purevtseren, Gantulga Gombodorj, Munkhbat Byamba-Ochir, Oyunchimeg Dugerjav, Munkhnaran Sugar, Bolormaa Batsuuri, Bazarkhand Tsegmid