Toward a long-term atmospheric CO2 inversion for elucidating natural carbon fluxes: technical notes of NISMON-CO2 v2021.1

Niwa, Yosuke; Ishijima, Kentaro; Ito, Akihiko; Iida, Yosuke

doi:10.1186/s40645-022-00502-6

Fig. 2

From: Toward a long-term atmospheric CO₂ inversion for elucidating natural carbon fluxes: technical notes of NISMON-CO₂ v2021.1

Error correlations of a prior gross primary production (GPP) flux at near 60.5° N, 100.5° E along with distance for April (a) and July (b). Gray and red crosses represent correlations before and after localization (Eq. 8), respectively. Spatial structures of the localized error correlations of a and b are shown in c and d, respectively. Furthermore, e and f are the same as c and d but for a different prior GPP flux at near 30.5° N, 110.5° E

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