 Climate change has already had diverse adverse impacts on human systems, including on water security and food production, health and well-being, and cities, settlements and infrastructure. The + and-symbols indicate the direction of observed impacts, with a-denoting an increasing adverse impact and a denoting that, within a region or globally, both adverse and positive impacts have been observed . Globally, "-" denotes an overall adverse impact, 'Water scarcity' considers, e.g., water availability in general groundwater, water quality, demand for water drought in cities. Impacts on food production were assessed by excluding non-climatic drivers of production increases; Global assessment for agricultural production is based on the impacts on global aggregated production: Reduced animal and livestock health and productivity considers, e.g., heat stress, diseases, productivity, mortality: "Reduced fisheries yields and aquaculture production includes marine and freshwater fisheries/production, Infectious diseases include, e.g., water-bome and vector-borne diseases; "Heat, malnutrition and other' considers, e.g., human heat-related morbidity and mortality, labour productivity, harm from wildfire, nutritional deficiencies; "Mental health includes impacts from extreme weather events, cumulative events, and vicarious or anticipatory events; 'Displacement' assessments refer to evidence of displacement attributable to climate and weather extremes; Inland flooding and associated damages' considers, eg, river overflows, heavy rain, glacier outbursts, urban flooding: 'Flood/storm induced damages in coastal areas include damages due to, e.g., cyclones, sea level rise, storm surges. Damages by key economic sectors are observed impacts related to an attributable mean or extreme climate hazard or directly attributed. Key economic sectors include standard classifications and sectors of importance to regions .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report