Nicolas Freychet

Biographic Data

ID7993072
NAMENicolas Freychet
GIVEN NAMESNicolas
FAMILY NAMEFreychet
SIGNATUREFREYCHET N
AFFILIATIONSUniversity of Edinburgh
ORCID0000-0003-2207-4425
VERIFIEDYes
TOTAL WORKS6
TOTAL CITATIONS0
AUTHOR COUNT6
EDITOR COUNT0
FIRST PUBLICATION YEAR2017
LATEST PUBLICATION YEAR2022
H-INDEX0

  • Robust increase in population exposure to heat stress with increasing global warming

    Open AccessNicolas Freychet, Gabriele C Hegerl et al.ARTICLEEnvironmental Research Letters2022

    Extreme heat, particularly if combined with humidity, poses a severe risk to human health. To estimate future global risk of extreme heat with humidity on health, we calculate indicators of heat stress that have been commonly used: the Heat Index, the Wet-Bulb Globe Temperature and the Wet-Bulb Temperature, from the latest Climate Model Intercomparison Project (CMIP6) projections. We analyse how and where different levels of heat stress hazards w…

  • Changes in regional wet heatwave in Eurasia during summer (1979–2017)

    Open AccessShuang Yu, Simon F B Tett et al.ARTICLEEnvironmental Research Letters2021

    Wet heatwaves can have more impact on human health than hot dry heatwaves. However, changes in these have received little scientific attention. Using the ECMWF Reanalysis v5 reanalysis dataset, wet-bulb temperatures ( T w ) were used to investigate the spatial-temporal variation of wet heatwaves in Eurasia for 1979–2017. Wet heatwaves were defined as three day or longer periods when T w was above the 90th percentile of the summer distribution and…

  • Anthropogenic influence on Northern Hemisphere blocking during the winter 1960/1961–2012/2013

    Open AccessDong Chen, Shaobo Qiao et al.ARTICLEEnvironmental Research Letters2021

    Atmospheric blocking (‘blocking’) in the Northern Hemisphere (NH) is a crucial driver of extreme cold spells in winter. Here we investigate the anthropogenic influence on the NH blocking and its impact on surface air temperature (SAT) during the winter 1960/1961–2012/2013 using two HadGEM3-GA6-N216 simulations with 15 ensemble members: (a) with anthropogenic and natural forcing (All-hist) and (b) with natural forcing only (Nat-hist). Compared to …

  • Attributing human influence on the July 2017 Chinese heatwave

    Open AccessSarah Sparrow, Qin Su et al.ARTICLEEnvironmental Research Letters2018

    On21–25 July 2017 a record-breaking heatwave occurred in Central Eastern China, affecting nearly half of the national population and causing severe impacts on public health, agriculture and infrastructure. Here, we compare attribution results from twoUKMet Office Hadley Centre models, HadGEM3-GA6 and weather@home (HadAM3P driving 50 kmHadRM3P). Within HadGEM3-GA6 July 2017-like heatwaves were unequaled in the ensemble representing the world witho…

  • Attribution of extreme precipitation in the lower reaches of the Yangtze River during May 2016

    Open AccessChunxiang Li, Qinhua Tian et al.ARTICLEEnvironmental Research Letters2017

    May 2016 was the third wettest May on record since 1961 over central eastern China based on station observations, with total monthly rainfall 40% more than the climatological mean for 1961–2013. Accompanying disasters such as waterlogging, landslides and debris flow struck part of the lower reaches of the Yangtze River. Causal influence of anthropogenic forcings on this event is investigated using the newly updated Met Office Hadley Centre system…

  • Summer heat waves over Eastern China

    Open AccessNicolas Freychet, Simon F B Tett et al.ARTICLEEnvironmental Research Letters2017

    Recent trends in summer heat waves (HW) over Central-Eastern China and their atmospheric drivers are investigated using the ERA Interim re-analysis. A composite analysis shows that these events are preceded by an increase in 500 hPa geopotential height. Consequently, a subsidence anomaly develops over the region and surface solar radiation increases. An increase in the northward moisture transport from the tropical region is also found to increas…