Without adaptation, water-related impacts of climate change are projected to reduce global GDP by 0.49% in 2050 under SSP3, with significant regional variations for the Middle East ; Sahel ; Central Asia , and East Asia  . In Asia, water-related impacts of climate change on all sectors of the economy are projected to reduce GDP by 0.9%  to 2.7%  by 2050 without adaptation or mitigation. Under the A1B scenario, real GDP is projected to fall by 0.78% by 2030 in South Asia . In Sub-Saharan Africa, damages from floods in 2100 are projected at 0.5% of GDP under a 2℃ temperature rise without adaptation; and will be non-uniformly spread across countries . In Europe, annual damages due to coastal flooding are projected at €93 billion by 2100 under RCP8.5-
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report