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Desertification and Climate Change

… a pre-industrial value of about 715 ppb to 1732 ppb in the early 1990s, and was 1774 ppb in 2005. The global atmospheric … regional and international levels; (b) Promoting effective early warning systems, which also serve as an essential alert …
18 Jun 2026 Document in Climate and Atmosphere
wmo_cc_desertif_foldout_en.pdf