TM5

• From:  Koffi, E. N., Bergamaschi, P., Alkama, R. & Cescatti, A. An observation-constrained assessment of the climate sensitivity and future trajectories of wetland methane emissions. Science Advances 6, eaay4444 (2020).

This paper presents a novel global estimate of wetland methane emissions based on atmospheric inverse modeling of CH₄ fluxes and observed temperature and precipitation.

Figure 1. Response of wetland CH₄ emissions to climate variables. Median value of the normalized emission E_n as function of the precipitation P and the temperature T is shown for the five climate zones (A to E) and at global scale (F). Emissions are derived from MACC project over 2000–2012 (MACC_NOAA INV). Precipitation P and temperature T are from the CRU database. The map of climate zones and the relevant mean value of wetland CH₄ flux (F_m), together with the wetland area (A_w), are dis- played. The sizes of the temperature T_c and precipitation P_c bins are set to 1°C and 1 cm/month, respectively.