Climate data were obtained over an eight-year period (July 2013 to June 2021) using an automatic weather observation system (AWS) installed at the foot of Mt. Geumo in Chilgok, Gyeongbuk. Using climate data, the statistical and meteorological characteristics of the local circulation between the Nakdong River and Mt. Geumo were analyzed. This study is based on automatic weather observation system data for Dongyeong, along with comparative climate data from the Korea Meteorological Administration (Chilgok) and the Gumi meteorological observatory. Over the eight- years, mountain and valley winds have occurred 48 times a year on average, with the highest occurring in May and the weakest winds in June and December. When mountain winds occurred, the temperature in the nearby lowland region more strongly decreased than when valley winds blew. However, the potential to use mountain winds to improve urban thermal environments is limited because mountain winds occur infrequently in summer when a drop in nighttime temperature is required.

Abstract
1. Introduction
2. Materials and Methods
    2.1. Study materials
    2.2. Method for selection of mountain and valleywinds
    2.3. Statistical analysis of observational data
3. Results and Discussion
    3.1. Characteristics of monthly occurrencefrequency of local circulation winds andtheir effect on temperature of surroundingarea
    3.2. Seasonal changes in timing of formationand end of local circulation winds
    3.3. Effect of local circulation winds on humidity
4. Conclusions
Acknowledgments
REFERENCES

• Ha-Young Kim(Department of Environmental Science, Keimyung University)
• Soo-Jin Park(Department of Environmental Science, Keimyung University)
• Hae-Dong Kim(Major in Global Environment, Faculty of Environment, College of Natural Sciences, Keimyung University) Corresponding Author