JapanFlux2024 RU-SkP Yakutsk Spasskaya Pad larch

Located in the center of the Lena River system, which stretches east to west from near Lake Baikal to the Sea of Okhotsk, it is conveniently situated as a base for trans-Siberian and Arctic Ocean expeditions along the Lena River. Its winter temperature is the lowest among the world's cities. On the other hand, in summer, despite its latitude, the temperature is relatively high, making it a typical continental climate with extremely large differences in temperature (in summer, the morning and evening temperatures are considerably cooler than the daytime heat, so the daily range is also large). It is also the largest city built on permafrost in the world, and many buildings are built on concrete piles.The turbulent fluxes of sensible heat, latent heat and CO2 were measured using the eddy covariance system.该城市地处勒拿河（Lena River）水系的核心区域——勒拿河自贝加尔湖附近向东延伸至鄂霍次克海（Sea of Okhotsk），东西横贯广袤地域，区位优势显著，可作为跨西伯利亚科考及沿勒拿河开展北冰洋科考的便捷基地。 其冬季气温为全球城市中最低。 与之相对，尽管地处较高纬度，夏季气温却相对偏高，属于典型的大陆性气候，气温年较差极大；夏季早晚气温远低于日间高温，因此气温日较差亦十分显著。 该城亦是全球规模最大的建于永冻土（permafrost）之上的城市，境内多数建筑均依托混凝土桩基建造。 研究团队采用涡度协方差系统（eddy covariance system）测定了感热通量、潜热通量与二氧化碳的湍流通量。