This paper highlights the urgent need to accelerate research and action on ocean carbon sinks through human intervention,known as the Global Ocean Negative Carbon Emissions(Global-ONCE)Programme,as a vital strategy in...This paper highlights the urgent need to accelerate research and action on ocean carbon sinks through human intervention,known as the Global Ocean Negative Carbon Emissions(Global-ONCE)Programme,as a vital strategy in global efforts to mitigate climate change.Achieving“net zero”by 2050 cannot rely on emission reductions alone,emphasizing the necessity of complementary approaches.Global-ONCE’s mission extends beyond scientific exploration.It embodies a profound commitment to protecting and restoring blue carbon ecosystems,as well as implementing ocean-based solutions that are sustainable,equitable,and inclusive.Early career ocean professionals(ECOPs)are at the heart of these efforts,and their innovative approaches,technical expertise,and passion make them indispensable leaders in advancing ONCE initiatives.ECOPs bridge the gap between science and society,playing a relevant role in integrating cutting-edge research,technological advancements,and community-driven action to address climate threats.By bringing together diverse perspectives and leveraging their interdisciplinary expertise,ECOPs ensure that ONCE strategies are grounded in scientific rigor and practical feasibility.Through advocacy,education,and collaboration,ECOPs not only spearhead research and innovation but also inspire collective action to safeguard our oceans.This paper amplifies the critical role of ECOPs as agents of change and calls for a unified global commitment to harness the ocean’s potential for a climate-resilient future.展开更多
Tropical cyclones are intense weather systems that originate over warm tropical oceans and they alter the dynamical,chemical,and biological state of the oceans.Here,the reasons for the rapid intensification of Super c...Tropical cyclones are intense weather systems that originate over warm tropical oceans and they alter the dynamical,chemical,and biological state of the oceans.Here,the reasons for the rapid intensification of Super cyclone Amphan that occurred in May 2020 in the Bay of Bengal(BoB)are thoroughly investigated.One of the main causes for the intensification of Amphan into a super cyclone is the rise in sea surface temperature(SST).Additionally,the warm-core eddies present in the track of cyclones also contributed to its rapid intensification.The Tropical Cyclone Heat Potential(TCHP)and Upper Ocean Heat Content(OHC)were consistent and remained high throughout the cyclone period to maintain its high intensity.Although there were greater cyclone-induced cold wakes during the period,the background SST conditions were still higher and were favourable for the cyclone to intensify further.The vertical wind shear in both shallow and deep layers was minimal,which further helped the formation of a stable and strong cyclonic vortex,and thus contributed to its rapid intensification.The behaviour of cyclone Amphan in future scenarios is analysed using a coupled atmosphere-ocean model.Compared to the current scenario,the severity of cyclones is expected to increase in the future(RCP 8.5).Early landfall is observed in the case of RCP 4.5.As a result of elevated UOHC,Amphan attains more strength in the RCP 8.5 than it does in the present scenario.The translational speed increases in the future,which makes the cyclone move faster.Due to the passage of Amphan,there is a reduction in UOHC,which is higher in the case of a future warm climate.This suggests that additional energy from the ocean is transferred to the atmosphere,causing the cyclone to intensify further.According to the results from the coupled atmosphere-ocean model,the future warm atmospheric and oceanic conditions will be more favourable for the genesis and development of stronger cyclones.展开更多
基金supported by the Ocean Negative Carbon Emissions(ONCE)Program,the Guangdong Provincial Education Science Planning Leading Group Office(2023GXJK107)the Guangdong Planning Office of Philosophy and Social Science(GD23XGL032)+3 种基金the Program for Scientific Research Start-up Funds of Guangdong Ocean University(060302092302)the Education and Teaching Reform Project of Guangdong Ocean University(PX-982024013)the Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)(SML2020SP002)C.Lindemann received funding from the Horizon Europe Framework project C-BLUES(project no.101137844).
文摘This paper highlights the urgent need to accelerate research and action on ocean carbon sinks through human intervention,known as the Global Ocean Negative Carbon Emissions(Global-ONCE)Programme,as a vital strategy in global efforts to mitigate climate change.Achieving“net zero”by 2050 cannot rely on emission reductions alone,emphasizing the necessity of complementary approaches.Global-ONCE’s mission extends beyond scientific exploration.It embodies a profound commitment to protecting and restoring blue carbon ecosystems,as well as implementing ocean-based solutions that are sustainable,equitable,and inclusive.Early career ocean professionals(ECOPs)are at the heart of these efforts,and their innovative approaches,technical expertise,and passion make them indispensable leaders in advancing ONCE initiatives.ECOPs bridge the gap between science and society,playing a relevant role in integrating cutting-edge research,technological advancements,and community-driven action to address climate threats.By bringing together diverse perspectives and leveraging their interdisciplinary expertise,ECOPs ensure that ONCE strategies are grounded in scientific rigor and practical feasibility.Through advocacy,education,and collaboration,ECOPs not only spearhead research and innovation but also inspire collective action to safeguard our oceans.This paper amplifies the critical role of ECOPs as agents of change and calls for a unified global commitment to harness the ocean’s potential for a climate-resilient future.
文摘Tropical cyclones are intense weather systems that originate over warm tropical oceans and they alter the dynamical,chemical,and biological state of the oceans.Here,the reasons for the rapid intensification of Super cyclone Amphan that occurred in May 2020 in the Bay of Bengal(BoB)are thoroughly investigated.One of the main causes for the intensification of Amphan into a super cyclone is the rise in sea surface temperature(SST).Additionally,the warm-core eddies present in the track of cyclones also contributed to its rapid intensification.The Tropical Cyclone Heat Potential(TCHP)and Upper Ocean Heat Content(OHC)were consistent and remained high throughout the cyclone period to maintain its high intensity.Although there were greater cyclone-induced cold wakes during the period,the background SST conditions were still higher and were favourable for the cyclone to intensify further.The vertical wind shear in both shallow and deep layers was minimal,which further helped the formation of a stable and strong cyclonic vortex,and thus contributed to its rapid intensification.The behaviour of cyclone Amphan in future scenarios is analysed using a coupled atmosphere-ocean model.Compared to the current scenario,the severity of cyclones is expected to increase in the future(RCP 8.5).Early landfall is observed in the case of RCP 4.5.As a result of elevated UOHC,Amphan attains more strength in the RCP 8.5 than it does in the present scenario.The translational speed increases in the future,which makes the cyclone move faster.Due to the passage of Amphan,there is a reduction in UOHC,which is higher in the case of a future warm climate.This suggests that additional energy from the ocean is transferred to the atmosphere,causing the cyclone to intensify further.According to the results from the coupled atmosphere-ocean model,the future warm atmospheric and oceanic conditions will be more favourable for the genesis and development of stronger cyclones.
