Geostrophic wind | 地轉風 地轉風(Geostrophic wind) 地轉風(Geostrophic wind) 是一種科氏力和氣壓梯度力 (Coriolis force and the pressure gradient force)巧妙平衡下產生的一種理論上的風。這個狀況稱為「地轉平衡」 (geostrophic equilibrium or geostrophic balance)。 地轉風的方向和等壓線平行。 這 2024-10-26 Meteorology
Jet Stream | 高速氣流 高速氣流(Jet Stream),或稱噴射氣流、高空急流、極鋒噴流、噴流、激流,是行星尺度的大氣環流。在地球上,指數條圍繞地球的強而窄的高速氣流帶,集中在對流層頂,在中高緯西風帶內或在低緯度地區都可出現。其水平長度達上萬公里,寬數百公里,厚數公里。中心風速有時可達每小時200至300公里的偏西風,而且可以有一個或多個風速極大中心,具有強大的水平風切變和垂直風切變。高速氣流附近亦有強大風切變,這也是 2024-10-26 Meteorology
Maths | PDE | Overview In mathematics, a partial differential equation (PDE) is an equation which computes a function between various partial derivatives of a multivariable function. Classification A PDE is called linear if 2024-10-25 Maths #NWP #ML #AI #PDE
Maths | Boundary Conditions In the study of differential equations, a boundary-value problem is a differential equation subjected to constraints called boundary conditions. A solution to a boundary value problem is a solution to 2024-10-25 Maths #NWP #ML #AI #PDE
ML | DeepONet DeepONet DeepONet is a novel deep learning architecture designed to approximate nonlinear operators, which are mappings from one function space to another. Developed by researchers at Brown University 2024-10-24 ML #ML #AI #PINN #DeepONet
ML | Automatic Differentiation In mathematics and computer algebra, automatic differentiation (auto-differentiation, autodiff, or AD), also called algorithmic differentiation, computational differentiation, is a set of techniques t 2024-10-22 ML #ML #AI #PINN #DeepONet
ML | Gaussian-Process (GP) In probability theory and statistics, a Gaussian process is a stochastic process (a collection of random variables indexed by time or space), such that every finite collection of those random variable 2024-10-21 ML #ML #AI #PINN #DeepONet
NWP | ECMWF The organisation was established in 1975 and now employs around 500 staff from more than 30 countries. ECMWF is one of the six members of the Co-ordinated Organisations, which also include the North A 2024-10-18 NWP #WRF #NWP #ML #AI #MPAS #ECMWF
LaTex | Figures Figures/Graphics Vector files. Mathematical formulas establish points on a grid to build vector images. Versatility is key for vector files because they can adjust in size countless times without losi 2024-10-17 LaTex
LaTex | Overview LaTeX LaTeX is a software system for typesetting documents. LaTeX is widely used in academia for the communication and publication of scientific documents and technical note-taking in many fields, owi 2024-10-17 LaTex