Fig. 2: Spatial patterns of the IAE at different atmospheric levels in North America and Afro-Eurasia during the summer months. | Nature Communications

Fig. 2: Spatial patterns of the IAE at different atmospheric levels in North America and Afro-Eurasia during the summer months.

From: Inverse altitude effect disputes the theoretical foundation of stable isotope paleoaltimetry

Fig. 2: Spatial patterns of the IAE at different atmospheric levels in North America and Afro-Eurasia during the summer months.

a-d IAE over North America and surroundings. e-h IAE over Afro-Eurasia and surroundings. The δDv value of the upper level minus the δDv value of the lower level was taken between the two adjacent atmospheric levels. A positive difference indicates that δDv increases with altitude, i.e., the IAE occurs. The black boxes on the left panels show the WUSA region (31° N–45° N, 118° W–106° W) while the black boxes on the right panels indicate the NTP (35° N–45° N, 66° E–106° E). Dark gray lines on the right panels outline the boundary of the Tibetan Plateau. Gray shading on the right panels indicates that no valid δDv data are available for the specific grid. IAE, inverse altitude effect. WUSA, western United States of America. NTP, northern Tibetan Plateau. This map was generated with The NCAR Command Language (Version 6.6.2) [Software]. (2019). Boulder, Colorado: UCAR/NCAR/CISL/TDD.

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