Fig. 2: Comparison of simulated and observed CH4 fluxes and spatial patterns of net methane (CH4) fluxes in the Tibetan alpine permafrost region.
From: Spatiotemporal patterns of methane fluxes across alpine permafrost region on the Tibetan Plateau
a,b Comparison of simulated and observed CH4 fluxes at marshland and non-marshland sites. Green boxplots and scatter plots show monthly observed data (1-3 measurements/month), while yellow ones show daily CLM5.0 simulations for the same months. c Annual mean net CH4 flux (positive for emission, negative for sink) in the Tibetan alpine permafrost region during 1989−2018. d−g Annual mean net CH4 fluxes for 2071−2100 under four SSP scenarios: (d) SSP1-2.6, (e) SSP2-4.5, (f) SSP3-7.0, (g) SSP5-8.5. h Comparison of annual mean CH4 emissions and sinks across all grid cells in marshland (left) and non-marshland (right) areas over different periods. In the boxplots, the solid line indicates the median; box edges represent the 25th (Q1) and 75th (Q3) percentiles; whiskers extend to the furthest data points within 1.5 × IQR (Q3–Q1).
