Information for the 40 eddy-covariance sites. The fourth column shows the land cover types based on the International Geosphere-Biosphere Programme (IGBP) classification, which include evergreen needleleaf forests (ENF; 7 sites), deciduous broadleaf forests (DBF; 4 sites), closed shrublands (CSH; 2 sites), opened shrublands (OSH; 5 sites), grasslands (GRA; 8 sites), permanent wetlands (WET; 7 sites), and croplands (CRO; 7 sites). The fifth column shows the Köppen climate classification, which include mid-latitude steppe and desert (Bsh; 2 sites), tropical steppe (Bsk; 3 sites), subtropical steppe (Bwk; 2 sites), humid subtropical (Cfa; 7 sites), hot-summer mediterranean (Csa; 5 sites), warm-summer mediterranean (Csb; 3 sites), hot-summer humid continental (Dfa; 5 sites), warm-summer humid continental (Dfb; 4 sites), subarctic (Dfc; 2), extremely-cold subarctic (Dfd; 4), and Tundra (ET; 2).

Information for the 40 eddy-covariance sites. The fourth column shows the land cover types based on the International Geosphere-Biosphere Programme (IGBP) classification, which include evergreen needleleaf forests (ENF; 7 sites), deciduous broadleaf forests (DBF; 4 sites), closed shrublands (CSH; 2 sites), opened shrublands (OSH; 5 sites), grasslands (GRA; 8 sites), permanent wetlands (WET; 7 sites), and croplands (CRO; 7 sites). The fifth column shows the Köppen climate classification, which include mid-latitude steppe and desert (Bsh; 2 sites), tropical steppe (Bsk; 3 sites), subtropical steppe (Bwk; 2 sites), humid subtropical (Cfa; 7 sites), hot-summer mediterranean (Csa; 5 sites), warm-summer mediterranean (Csb; 3 sites), hot-summer humid continental (Dfa; 5 sites), warm-summer humid continental (Dfb; 4 sites), subarctic (Dfc; 2), extremely-cold subarctic (Dfd; 4), and Tundra (ET; 2).