FN Archimer Export Format
PT J
TI Seasonal shift in storm surges at Brest revealed by extreme value analysis
BT 
AF Reinert, Markus
   PINEAU-GUILLOU, Lucia
   Raillard, Nicolas
   Chapron, Bertrand
AS 1:1,2;2:1;3:3;4:1;
FF 1:;2:PDG-ODE-LOPS-OC;3:PDG-REM-RDT-LCSM;4:PDG-ODE-LOPS-SIAM;
C1 IFREMER ,CNRS IRD UBO Laboratoire d’Océanographie Physique et Spatiale UMR 6523 IUEM Brest ,France
   Leibniz Institute for Baltic Sea Research ,Warnemünde 18119 Rostock ,Germany
   IFREMER, Laboratoire Comportement des Structures en Mer Brest ,France
C2 IFREMER, FRANCE
   LEIBNIZ INST BALT SEA RES (IOW), GERMANY
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-LOPS-OC
   PDG-REM-RDT-LCSM
   PDG-ODE-LOPS-SIAM
UM LOPS
IN WOS Ifremer UPR
   WOS Ifremer UMR
   copubli-europe
IF 3.938
TC 8
UR https://archimer.ifremer.fr/doc/00740/85212/90225.pdf
   https://archimer.ifremer.fr/doc/00740/85212/90226.pdf
LA English
DT Article
DE ;Strom surge;extremes;seasonality;sea level;climate variability;statistical analysis
AB Global warming changes the Earth’s climate in different ways, in particular it influences extreme weather events like storms. Strong storms cause large surges and thus have a signature in the sea level record. While previous studies focused on long-term changes of storm surge amplitude or frequency, changes in the timing of extreme surge events have not been investigated so far. We employed the more than 150-year long tide gauge record of Brest (France) and found a distinct shift of storm surge timing between the years 1950 and 2000. This caused extreme events to happen about three weeks earlier during the year. We developed for this study two different methods based on statistical extreme value analysis; both methods show this shift of the seasons consistently. Furthermore, by analyzing eight additional stations, we found evidence that this timing shift happened similarly over a large part of the European Atlantic coast. Therefore, we speculate that our measured shift is part of a large-scale climate process. Plain Language Summary Climate change leads to an increase of the sea level all over the world. This means not only that the average sea level rises, but also that extreme sea levels become higher, which presents a major threat for coastal communities. To prepare for this growing natural hazard, it is important to understand how extreme sea levels evolve in a warming climate. One of the best places to study this is the harbour of Brest, France, which has one of the longest sea level records in the world (over 150 years). From this time series we extracted the surge, which is the part of the sea level that is created by large-scale atmospheric forcing, like storms. We used two statistical methods to analyze the extreme surge levels in Brest, and we found that between 1950 and 2000, the season of large surge levels shifted forward. In 2000, extreme storm surge events happened three weeks earlier than 50 years before. We then analyzed sea level records of other stations and found the same shift over large parts of the European Atlantic coast. So we conclude that this shift of the extreme surge season might be the signature of a large-scale climate process. 
PY 2021
PD DEC
SO Journal Of Geophysical Research-oceans
SN 2169-9275
PU American Geophysical Union (AGU)
VL 126
IS 12
UT 000735870300029
DI 10.1029/2021JC017794
ID 85212
ER

EF