Temperature & Extreme Heat

Extreme Heatwave Frequency & Duration

Frequency, peak temperatures, and duration of severe heatwaves exceeding historical thresholds.

Wet-Bulb Temperature Extremes

Combined heat and humidity reaching or exceeding human thermoregulatory limits (31–35°C Tw].

Warming Trends & Mean Temperature Anomaly

Baseline shift in annual average temperatures, pronounced in polar, boreal, and continental interiors.

Loss of Winter Freeze / Cold Days

Decline in sub-zero chilling days affecting pest control, snow accumulation, and winter recreation.

Water Availability & Hydrology

Drought Severity & Soil Moisture Deficit

Prolonged rainfall deficits, topsoil drying, and agricultural aridification.

Groundwater Depletion & Water Stress

Extraction exceeding recharge, leading to aquifer collapse and municipal rationing.

Glacial Retreat & Snowpack Volume Loss

Loss of seasonal headwater storage threatening dry-season river flow and hydroelectricity.

Freshwater Salinization

Intrusion of ocean saltwater into river deltas, low-lying coastal estuaries, and potable aquifers.

Coastal & Marine Impacts

Sea Level Rise (Relative & Absolute]

Permanent coastal submergence driven by thermal expansion and melting ice sheets.

Coastal Storm Surge & Tidal Flooding

Frequent nuisance sunny-day high-tide flooding and storm tides inundating settlements.

Ocean Acidification & Coral Bleaching

Decline in marine pH and reef mortality destroying natural wave barriers and coastal fisheries.

Coastal Erosion & Shoreline Retreat

Permanent loss of landmass, beach loss, and cliff collapse due to wave action and rising seas.

Extreme Weather & Atmosphere

Tropical Cyclone Intensity & Frequency

Increase in high-category hurricanes, typhoons, and cyclones with severe peak winds and stalling rainfall.

Extreme Precipitation & Pluvial (Flash] Flooding

Torrential downpours overwhelming urban drainage and causing intense cloudburst flash floods.

Riverine (Fluvial] Flooding

Catastrophic riverbank overtopping following sustained seasonal monsoons or sudden high-altitude snowmelt.

Wildfire Hazard & Burn Acreage

Extended fire weather seasons, rapid fire spread, and expanded total hectares burned annually.

Surface Air Quality & Wildfire Smoke Exposure

Elevated PM2.5 levels from chronic smoke plumes, dust storms, and stagnant heat domes.

Ecosystem & Socio-Economic Knock-On Effects

Agricultural Yield Volatility

Crop failures and staple grain yield losses caused by unseasonal droughts, heat waves, and water scarcity.

Vector-Borne Disease Expansion

Geographic and altitudinal expansion of mosquito and tick habitats carrying dengue, malaria, or Lyme disease.

Permafrost Thaw & Infrastructure Subsidence

Structural collapse of roads, buildings, and oil pipelines over thawing Arctic ground.

Political Stability & Governance Resilience

Vulnerability of state institutions, rule of law, and internal peace to climate-induced resource crises (1 = stable, 3 = high fragility].

Openness to Immigrants & Integration Policy

Border and residency barriers for foreign migrants and climate-displaced individuals (1 = open/accessible, 3 = closed/hostile].