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Table 1 Criteria for demarcating the arid/humid climate regions of Asia according to AI

From: Arid/humid patterns over Asia in response to national-committed emission reductions under the Paris agreement

Arid/humid climate regionAridity index (AI = P/PET)
HumidAI ≥ 0.65
Sub-humid0.5 ≤ AI < 0.65
Semi-arid0.2 ≤ AI < 0.5
AridAI < 0.2