Recent scientific data indicates a significant increase in the duration and intensity of heat stress globally, compounded by specific meteorological phenomena in Europe.

最近的科學數據顯示，全球熱壓力的持續時間與強度顯著增加，且受到歐洲特定氣象現象的影響而加劇。

The proliferation of heat stress is attributed to the anthropogenic emission of greenhouse gases from fossil fuel combustion. Research published in Nature Climate Change utilizes the Universal Thermal Climate Index to demonstrate that the synergy of elevated temperatures and humidity impairs human thermoregulation via sweat evaporation. This has resulted in an expansion of the heat stress footprint into historically temperate regions. Quantitatively, an additional one billion individuals are now exposed to at least one day of extreme heat stress annually compared to the 1970s. Furthermore, the rate of increase in nocturnal minimum temperatures exceeds that of diurnal maximums, potentially impeding physiological recovery from daytime thermal loads.

熱壓力的擴散歸因於人類燃燒化石燃料排放的溫室氣體。《自然·氣候變化》發表的研究利用「通用熱氣候指數」證明，高溫與高濕度的協同作用會損害人類透過汗液蒸發進行的體溫調節。這導致熱壓力的影響範圍擴展至以往的溫帶地區。定量分析顯示，與 1970 年代相比，目前每年有額外十億人暴露於至少一天的極端熱壓力中。此外，夜間最低溫的上升率超過了日間最高溫，可能阻礙身體從日間熱負荷中恢復。

Regional variations are pronounced; Southern Africa, East Africa, and Central America have experienced an increase of approximately 50 days of strong heat stress per annum. Southern Europe has seen an increase of up to 40 days, while the United States, particularly Florida and Texas, reports a rise in very strong heat stress days.

區域差異十分明顯；南部非洲、東部非洲與中美洲每年強熱壓力的天數增加了約 50 天。南歐增加了最多 40 天，而美國（尤其是佛羅里達州與德州）則報告極強熱壓力天數有所上升。

Concurrent with these long-term trends, Western Europe has experienced acute mortality—exceeding 40 deaths in France—linked to an 'omega block.' This atmospheric configuration occurs when a high-pressure ridge is sequestered between two low-pressure systems, disrupting the jet stream's zonal flow. While scientific consensus regarding the frequency of such blocking events remains unsettled, there is an established correlation between a higher global baseline temperature and the intensified severity of the resulting heatwaves. Consequently, European heatwaves are currently estimated to be 2 to 4 degrees Celsius more intense than they would be in a pre-industrial climate.

與這些長期趨勢同時發生的是，西歐經歷了與「歐米茄阻塞」相關的急性死亡事件——法國超過 40 人死亡。這種大氣配置發生於高壓脊被困在兩個低壓系統之間，從而擾亂了噴射氣流的帶狀流動。雖然科學界對於此類阻塞事件的發生頻率尚未達成共識，但全球基準溫度較高與熱浪嚴重程度加劇之間存在明確的相關性。因此，目前估計歐洲熱浪的強度比工業化前的氣候高出 2 至 4 攝氏度。

Global populations are facing an increase in lethal heat stress, exacerbated by atmospheric blocking patterns and a rising thermal baseline.

全球人口正面臨致命熱壓力增加的問題，且受大氣阻塞模式與上升的熱基準溫度而加劇。