Croucher News

July 2021

CMIP5 projections point to longer, more humid heat seasons in Hong Kong 31 July 2021

Projections using CMIP5 data show increasing wet-bulb temperatures and longer warm seasons in Hong Kong, posing serious public health challenges by the end of the century.

Enhancing slope safety for extreme rainfall and climate change impacts in Hong Kong 31 July 2021

A study highlights how climate change-induced rainfall increases could overwhelm Hong Kong’s landslide emergency response system, stressing the need for improved slope safety measures.

Hong Kong Observatory projects rise in extreme rainfall 31 July 2021

Using CMIP5 climate models, the Hong Kong Observatory projects rising rainfall intensity, more frequent extreme rainfall events, and longer consecutive wet days by 2100.

Evolving slope safety measures for a changing climate 31 July 2021

Climate change and extreme rainfall heighten landslide risks in Hong Kong, requiring advanced technologies and holistic management strategies for resilience.

Flood damage assessments in Hong Kong and PRD from 21st-century sea level rise. 31 July 2021

Sea level rise will worsen flooding in Hong Kong and PRD, displacing 100,000 annually by 2100, requiring urgent adaptation.

Study links cumulative and nocturnal heat stress to increased urban mortality 31 July 2021

A time-stratified study in Hong Kong highlights the critical impact of consecutive hot nights and non-consecutive heat on mortality, underscoring the need for enhanced heat-health monitoring.

Mapping a heat health risk index for high-density cities 31 July 2021

A spatial study of heat health risk in Hong Kong identifies high-risk areas, revealing shifting hotspots and key factors driving vulnerability for improved localised action plans.

Hong Kong experiences sharp rise in short-duration extreme rainfall 31 July 2021

A study of Hong Kong's rainfall from 1984 to 2010 links abrupt increases in extreme precipitation intensity and frequency to atmospheric circulation patterns and monsoon variability.

Warming climate may intensify typhoons and raise storm-tide risk in the Pearl River Delta 31 July 2021

Pseudo‑global‑warming simulations of three major Pearl River Delta cyclones suggest stronger storms and higher surges, with sea‑level rise lifting late‑century storm‑tide levels by ~1 m.

Pacific climate cycles found to control South China Sea sea level 31 July 2021

A study links sea level variations in the South China Sea to warm and cold phases, driven by atmospheric heat flux, water advection, and Pacific climate variability.

Rising seas and stronger typhoons heighten storm surge and waves in the Pearl River Estuary 31 July 2021

A study finds typhoon intensity significantly impacts storm surges, while sea level rise drives higher wave heights, exacerbating flood risks in low-lying coastal areas.

Projected 21st‑century sea level rise and submersion risk in the Pearl River Delta 31 July 2021

The Pearl River Delta could see sea levels rise by up to 1.94 metres by 2100, potentially submerging around 8,570 square kilometres of land and calling for strengthened coastal planning and adaptation.

Hong Kong’s extreme heat risk rose from 2006 to 2016, study finds 31 July 2021

A study mapped extreme heat risk in Hong Kong, revealing worsening conditions and identifying high-risk urban hotspots driven by population density and socio-economic vulnerabilities.

The changing composition of seasonal rainfall in Hong Kong 31 July 2021

Research reveals tropical cyclones contribute 25% of Hong Kong's summer and autumn precipitation, with changing patterns showing decreased cyclone-related rainfall but increased non-cyclone rainfall events.

Western North Pacific typhoons may become fewer but more damaging 31 July 2021

Third assessment on impacts of climate change on tropical cyclones in the Western North Pacific projects fewer storms, higher intensity, and greater storm surge risks linked to sea level rise.

CMIP5 temperature projections for Hong Kong to 2100 31 July 2021

Using CMIP5 models, projections show Hong Kong’s temperature could rise by 2.2ºC to 4.2ºC by 2100, depending on greenhouse gas emissions scenarios.2

Sea levels set to rise faster around Hong Kong 31 July 2021

Modelling suggests sea levels near Hong Kong could rise by up to 0.84 metres this century, driven by land subsidence and global ice loss.

Western North Pacific typhoons show few clear climate signals so far 31 July 2021

Recent findings indicate limited evidence of climate change effects on Western Pacific cyclones but confirm increasing storm surge risks

Hospital admissions influenced by temperature, weather, and pollution. 31 July 2021

Retrospective analysis of hospital admissions in Hong Kong highlights the health effects of extreme temperatures, weather patterns, and pollution, with admissions rising during both hot and cold seasons.

South China’s changing cyclone risk 31 July 2021

Projections show a decline in tropical cyclone landfalls in South China due to shifting genesis patterns but predict stronger landfalling storms under warmer climate conditions.

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