气候变化领域集成服务门户(CCPortal): Sensitivity of Shelf Sea Marine Ecosystems to Temporal Resolution of Meteorological Forcing

CCPortal

DOI	10.1029/2019JC015922
	Sensitivity of Shelf Sea Marine Ecosystems to Temporal Resolution of Meteorological Forcing
	Powley H.R.; Bruggeman J.; Hopkins J.; Smyth T.; Blackford J.
发表日期	2020
ISSN	21699275
卷号	125 期号:7
英文摘要	Phytoplankton phenology and the length of the growing season have implications that cascade through trophic levels and ultimately impact the global carbon flux to the seafloor. Coupled hydrodynamic-ecosystem models must accurately predict timing and duration of phytoplankton blooms in order to predict the impact of environmental change on ecosystem dynamics. Meteorological conditions, such as solar irradiance, air temperature, and wind speed are known to strongly impact the timing of phytoplankton blooms. Here, we investigate the impact of degrading the temporal resolution of meteorological forcing (wind, surface pressure, air, and dew point temperatures) from 1–24 hr using a 1-D coupled hydrodynamic-ecosystem model at two contrasting shelf-sea sites: one coastal intermediately stratified site (L4) and one offshore site with constant summer stratification (CCS). Higher temporal resolutions of meteorological forcing resulted in greater wind stress acting on the sea surface increasing water column turbulent kinetic energy. Consequently, the water column was stratified for a smaller proportion of the year, producing a delayed onset of the spring phytoplankton bloom by up to 6 days, often earlier cessation of the autumn bloom, and shortened growing season of up to 23 days. Despite opposing trends in gross primary production between sites, a weakened microbial loop occurred with higher meteorological resolution due to reduced dissolved organic carbon production by phytoplankton caused by differences in resource limitation: light at CCS and nitrate at L4. Caution should be taken when comparing model runs with differing meteorological forcing resolutions. Recalibration of hydrodynamic-ecosystem models may be required if meteorological resolution is upgraded. ©2020. The Authors.
英文关键词	ecosystem modeling; ERA5; ERSEM; meteorology; phenology; wind
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186776
作者单位	Plymouth Marine Laboratory, Plymouth, United Kingdom; National Oceanography Centre, Liverpool, United Kingdom
推荐引用方式 GB/T 7714	Powley H.R.,Bruggeman J.,Hopkins J.,et al. Sensitivity of Shelf Sea Marine Ecosystems to Temporal Resolution of Meteorological Forcing[J],2020,125(7).
APA	Powley H.R.,Bruggeman J.,Hopkins J.,Smyth T.,&Blackford J..(2020).Sensitivity of Shelf Sea Marine Ecosystems to Temporal Resolution of Meteorological Forcing.Journal of Geophysical Research: Oceans,125(7).
MLA	Powley H.R.,et al."Sensitivity of Shelf Sea Marine Ecosystems to Temporal Resolution of Meteorological Forcing".Journal of Geophysical Research: Oceans 125.7(2020).