珠江口海雾天气气候特征及成因分析

来源 :海洋预报 | 被引量 : 0次 | 上传用户:seasonlao
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
利用设立于珠江口海域具有较高时间分辨率的自动气象站的观测资料,结合欧洲中期天气预报中心再分析逐日数据集ERA-Interim,对珠江口海雾的天气气候特征、环流场及相关的气象和水文因子进行分析研究.结果 表明:海雾日数月际变化显著,海雾盛季为2-4月;日变化特征表现为海雾多生成于夜间—凌晨时段,多消散于早晨—上午时段.珠江口海雾发生的大尺度环流形势可分为冷锋型、均压场型、低压前部型和高压后部型4类,其中冷锋型海雾属于混合雾,其他均属于平流冷却雾.进一步的分析表明,层结稳定且适宜的相对湿度、风速、风向及海-气温差等气象和水文条件,有利于珠江口海雾过程的发生和发展,这对做好海雾过程的预报具有一定的指导意义.
其他文献
Reduced graphene oxide is the precursor to produce graphene in a large scale;however,to date,there has been no consensus on the electronic structure of reduced graphene oxide.In this study,we carried out an ab initio molecu-lar dynamics simulation to inve
We present a new three-dimensional po-tential energy surface (PES) for CH4-Ne complex.The electronic structure computations were carried out using the coupled-cluster method with sin-gles,doubles,and perturbative triples[CCSD(T)],the augmented correlation
The luminescence property of 2,7-diphenyl-fluorenone (DPFO) was previously reported to be very un-usual with a large aggregation-induced effect associated with a flu-orescence redshift of 150 nm.The phenomenon is reexamined in this work.It is found that t
Three-dimensional (3D) dia-batic potential energy surfaces(PESs) of thiophenol involving the S0,and coupled 1ππ* and 1πσ* states were constructed by a neural network approach.Specifically,the diabatization of the PESs for the 1ππ* and 1πσ* states was achi
Monte Carlo (MC) methods are important computational tools for molecular struc-ture optimizations and predictions.When solvent effects are explicitly considered,MC methods become very expensive due to the large degree of freedom associated with the water
In order to investigate the origin of cat-alytic power for serine proteases,the role of the hydrogen bond in the catalytic triad was studied in the proteolysis pro-cess of the peptides chymotrypsin in-hibitor 2 (CI2),MCTI-A,and a hexapep-tide (SUB),respec
We measured the photoelectron spectra of AlnC4-(n=2-4) clusters by using size-selected anion photoelectron spectroscopy.The structures of AlnC4-/0 (n=2-4) clusters were ex-plored with quantum chemistry calculations and were determined by comparing the the
预算管理作为企业会计人员管理资金常用手段和工具,合理利用企业预算管控可使企业控制内部各项经济活动、资金运转等能力提高,让经济活动可以在预期目标和规定范围内进行,为企业经营和发展中开展的各类决策提供充足数据资料,保证企业涉及的资金成本能够得到全方位控制.因此,如何针对企业预算落实管理手段,全面解决预算管理过程中出现的各项问题,维护企业生产以及运行中产生的成本,成为现代各个类型企业综合考量的内容.本文以企业预算管理的概念为切入点,通过分析企业预算管理工作落实时存在的问题,探索企业成本管控过程中预算管理具有的应
The hierarchical equation of motion method has become one of the most popular nu-merical methods for describ-ing the dissipative dynamics of open quantum systems linearly coupled to environment.How-ever,its applications to sys-tems with strong electron co
Cyano substitution has been established as a viable approach to optimize the performance of all-small-molecule organic solar cells.However,the effect of cyano substitution on the dynamics of photo-charge generation re-mains largely unexplored.Here,we repo