Temperature Highs, Climate Change Salience, and Eco-Anxiety: Early Evidence from the 2022 United Kingdom Heatwave

Savu, Alexandru

doi:10.2139/ssrn.4294843

Cited by 3 publications

(2 citation statements)

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“…This is consistent with Schlegel et al (2021), who found that the maximum intensity of MHWs dominates MCSs in the Bay of Biscay and vice versa in the English Channel. Along the coasts, the maximum of MHW activity is detected in 2022 in the English Channel, which might be related to the summer European heatwaves recorded (ECMWF, 2022;Savu, 2022;Guinaldo et al, 2023).…”

Section: Discussionmentioning

confidence: 90%

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

Simon,

Poppeschi,

Plecha

et al. 2023

Ocean Sci.

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Abstract. The latest Intergovernmental Panel on Climate Change (IPCC) report describes an increase in the number and intensity of marine heatwaves (MHWs) and a decrease in marine cold spells (MCSs) in the global ocean. However, these reported changes are not uniform on a regional to local basis, and it remains unknown if coastal areas follow the open-ocean trends. Surface ocean temperature measurements collected by satellites (from 1982–2022) and 13 coastal buoys (from 1990–2022) are analyzed in the northeastern Atlantic and three subregions: the English Channel, Bay of Brest and Bay of Biscay. The activity metric, combining the number of events, intensity, duration and spatial extent, is used to evaluate the magnitude of these extreme events. The results from in situ and satellite datasets for each of the studied regions are quite in agreement, although the satellite dataset underestimates the amplitude of activity for both MHWs and MCSs. This supports the applicability of the method to both in situ and satellite data, albeit with caution on the amplitude of these events. Also, this localized study in European coastal northeastern Atlantic water highlights that similar changes are being seen in coastal and open oceans regarding extreme events of temperature, with MHWs being more frequent and longer and extending over larger areas, while the opposite is seen for MCSs. These trends can be explained by changes in both the mean of and variance in sea-surface temperature. In addition, the pace of evolution and dynamics of marine extreme events differ among the subregions. Among the three studied subregions, the English Channel is the region experiencing the strongest increase in summer MHW activity over the last 4 decades. Summer MHWs were very active in the English Channel in 2022 due to long events, in the Bay of Biscay in 2018 due to intense events and in the Bay of Brest in 2017 due to a high occurrence of events. Winter MCSs were the largest in 1987 and 1986 due to long and intense events in the English Channel. Finally, our findings suggest that at an interannual timescale, the positive North Atlantic Oscillation favors the generation of strong summer MHWs in the northeastern Atlantic, while low-pressure conditions over northern Europe and a high off the Iberian Peninsula in winter dominate for MCSs. A preliminary analysis of air–sea heat fluxes suggests that, in this region, reduced cloud coverage is a key parameter for the generation of summer MHWs, while strong winds and increased cloud coverage are important for the generation of winter MCSs.

show abstract

Section: Discussionmentioning

confidence: 90%

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

Simon,

Poppeschi,

Plecha

et al. 2023

Ocean Sci.

View full text Add to dashboard Cite

show abstract

“…This is consistent with Schlegel et al (2021) who found that the maximum intensity of MHW dominates MCS in the Bay of Biscay, and vice versa in the English Channel. Along the coasts, the maximum of MHW activity is detected in 2022 in the English Channel which might be related to the summer European heatwaves recorded (ECMWF, 2022;Savu, 2022).…”

Section: Discussionmentioning

confidence: 92%

Coastal and regional marine heatwaves and cold-spells in the Northeast Atlantic

Simon

Poppeschi

Plecha

et al. 2023

Preprint

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Abstract. The latest IPCC report describes an increase in the number and intensity of marine heatwaves (MHWs) and a decrease in marine cold-spells (MCSs) in the global ocean. However, these reported changes are not uniform on a regional to local basis and it remains unknown if coastal areas follow the open ocean trends. Ocean temperature measurements collected by satellites (from 1982–2022) and 13 coastal buoys (from 1990–2022) are analyzed in the Northeast Atlantic and three subregions: English Channel, Bay of Brest and Bay of Biscay. The activity metric, combining the number of events, intensity, duration and spatial extent, is used to evaluate the magnitude of these extreme events. The results from in situ and satellite datasets for each of the studied regions are quite in agreement, although the satellite dataset underestimates the amplitude of activity for both MHW and MCS. This supports the applicability of the method to both in situ and satellite data, albeit with caution on the amplitude of these events. Also, this localized study in European coastal Northeast Atlantic water highlights that similar changes are being seen in coastal and open oceans regarding extreme events of temperature, with MHWs being more frequent, longer, and extending over larger areas, while the opposite is seen for MCSs. These trends are explained by changes in both the mean and variance of sea-surface temperature. Besides, the pace of evolution and dynamics of marine extreme events differs among the subregions. The English Channel is the region experiencing the most drastic changes over the last four decades. Summer marine heatwaves were very active in the English Channel in 2022 due to long events, in the Bay of Biscay in 2018 due to intense events and in the Bay of Brest in 2017 due to a high occurrence of events. Winter MCSs were the largest in 1987 and 1986 due to long and intense events in the English Channel. Finally, our findings suggest that at an interannual time scale, having dominant high-pressure conditions over Northern Europe and a low off the Iberian Peninsula favor the generation of strong summer MHWs in the Northeast Atlantic, while the opposite situation in winter dominates for MCSs.

show abstract

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

Simon,

Poppeschi,

Plecha

et al. 2024

Preprint

View full text Add to dashboard Cite

The latest Intergovernmental Panel on Climate Change (IPCC) report describes an increase in the number and intensity of marine heatwaves (MHWs) and a decrease in marine cold spells (MCSs) in the global ocean. How- ever, these reported changes are not uniform on a regional to local basis, and it remains unknown if coastal areas fol- low the open-ocean trends. Surface ocean temperature mea- surements collected by satellites (from 1982–2022) and 13 coastal buoys (from 1990–2022) are analyzed in the north- eastern Atlantic and three subregions: the English Channel, Bay of Brest and Bay of Biscay. The activity metric, com- bining the number of events, intensity, duration and spatial extent, is used to evaluate the magnitude of these extreme events. The results from in situ and satellite datasets for each of the studied regions are quite in agreement, although the satellite dataset underestimates the amplitude of activity for both MHWs and MCSs. This supports the applicability of the method to both in situ and satellite data, albeit with cau- tion on the amplitude of these events. Also, this localized study in European coastal northeastern Atlantic water high- lights that similar changes are being seen in coastal and open oceans regarding extreme events of temperature, with MHWs being more frequent and longer and extending over larger ar- eas, while the opposite is seen for MCSs. These trends can be explained by changes in both the mean of and variance in sea-surface temperature. In addition, the pace of evolu- tion and dynamics of marine extreme events differ among the subregions. Among the three studied subregions, the English Channel is the region experiencing the strongest increase in summer MHW activity over the last 4 decades. Summer MHWs were very active in the English Channel in 2022 due to long events, in the Bay of Biscay in 2018 due to intense events and in the Bay of Brest in 2017 due to a high occur- rence of events. Winter MCSs were the largest in 1987 and 1986 due to long and intense events in the English Channel. Finally, our findings suggest that at an interannual timescale, the positive North Atlantic Oscillation favors the generation of strong summer MHWs in the northeastern Atlantic, while low-pressure conditions over northern Europe and a high off the Iberian Peninsula in winter dominate for MCSs. A pre- liminary analysis of air–sea heat fluxes suggests that, in this region, reduced cloud coverage is a key parameter for the generation of summer MHWs, while strong winds and in- creased cloud coverage are important for the generation of winter MCSs.

show abstract

Temperature Highs, Climate Change Salience, and Eco-Anxiety: Early Evidence from the 2022 United Kingdom Heatwave

Cited by 3 publications

References 0 publications

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

Coastal and regional marine heatwaves and cold-spells in the Northeast Atlantic

Coastal and regional marine heatwaves and cold spells in the northeastern Atlantic

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