A kind of hycom data downloading method, system, computer equipment, terminal

Abstract

The invention belongs to the technical field of marine weather forecasting, and discloses a HYCOM data download method, system, computer equipment and terminal. According to the download. The OPeNDAP Server address of the HYCOM data corresponding to the termination time determination; read the metadata information of the dataset; slice and extract the specified element components according to the time period, area range, horizontal resolution, time step and vertical water depth set in the configuration file ;Format the read data, and create a corresponding file format according to the configuration file; read the downloaded result data through the python xarray and netcdf class libraries; check whether the downloaded result data is complete and correct through the preset sampling grid points; input corresponding processing command. The invention realizes on-demand extraction and efficient statistical analysis of HYCOM data, and can also be applied to the download of other atmosphere and ocean data supporting the OPeNDAP protocol after modification.

Description

technical field [0001] The invention belongs to the technical field of marine weather forecasting, and in particular relates to a HYCOM data downloading method, system, computer equipment and terminal. Background technique [0002] Currently, the U.S. Navy’s Global Ocean Forecasting System (GOFSv3.0, which has been updated to 3.1) consists of a global 1 / 12° Hybrid Coordinate Ocean Model (HYbrid Coordinate Ocean Model, HYCOM) and a Coupled Ocean Data Assimilation System (Navy Coupled Ocean Data Assimilation , NCODA), which provides HYCOM reanalysis products and forecast products, there are five main variables: water_temp (temperature), salinity (salinity), surf_el (sea surface height), water_u (latitudinal velocity), water_v (longitudinal Velocity), version 3.1 adds water_temp_bottom (bottom temperature), salinity _bottom (bottom salinity), water_u_bottom (bottom latitudinal velocity), water_v_bottom (bottom meridional velocity). Reanalysis Reanalysis products mainly include...

AI Technical Summary

Problems solved by technology

[0005] Through the above analysis, the existing problems and defects of the prior art are: 1. The current HYCOM download tool is relatively limited, and mainly downloads through ftp. A small number of tools based on the OPeNDAP download method have simple functions and do not extract the specified target area for download. HYCOM data functions of time interval, feature, spatial resolution, time interval and vertical depth, and there is no integration of downloading of various HYCOM data sets

2. Affected by the performance of the network and server, there may be abnormal problems such as connection interruption, incomplete data download and non-value (nan) when downloading HYCOM data

3. There are many data files downloaded in batches, and the post-processing is more complicated

[0006] The difficulty of solving the above problems and defects is as follows: 1. It is necessary to systematically integrate a series of data product downloads provided by HYCOM. The time period, resolution and download address of different data products are different.

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