SMEAR station network

The Station for Measuring Earth surface - Atmosphere Relations, SMEAR, is a unique research infrastructure concept in its comprehensiveness. SMEAR station is an integrated and sophisticated approach to observe in-situ 24/7 and in a coherent way material and energy exchange between the atmosphere and the Earth surface. It is designed to provide high quality, unbiased data and associated metadata on land, aquatic and urban Earth surface–atmosphere interactions to enhance understanding from nano-scale to global feedback loops. Measurement data is aimed to be open and easily accessible for international multidisciplinary research community.

FINLAND

	SMEAR I Värriö SMEAR I 67° 45' 18.158' N', 29° 36' 36.495' E, 390 m above sea level Subarctic pine forest
	SMEAR II / Flagship station Hyytiälä SMEAR II 61°51’ N,  24°17’ E, 181 m above sea level Southern boreal pine forest, lake and wetland (Photo from Juho Aalto.)
	SMEAR III Helsinki SMEAR III 60° 12.173' N, 24° 57.663'E Urban environment
	SMEAR IV Kuopio-Puijo SMEAR IV 62°55', E 27°40' 224 m above sea level elevated location in a semi-urban area, site frequently in cloud
	SMEAR Agriculture
	SMEAR Marine CostClim project

ESTONIA

CHINA

INDIA

	Sonipat Atmospheric Observatory Located in Delhi