rodeo-bufr-tools 0.4.5

Tools for working with JSON-BUFR conversion in the E-SOH proejct.

E-SOH

EURODEO

The RODEO project develops a user interface and Application Programming Interfaces (API) for accessing meteorological datasets declared as High Value Datasets (HVD) by the EU Implementing Regulation (EU) 2023/138 under the EU Open Data Directive (EU) 2019/1024. The project also fosters the engagement between data providers and data users for enhancing the understanding of technical solutions being available for sharing and accessing the HVD datasets. This project provides a sustainable and standardized system for sharing real-time surface weather observations in line with the HVD regulation and WMO WIS 2.0 strategy. The real-time surface weather observations are made available through open web services, so that they can be accessed by anyone.

Near real-time observational data

E-SOH is part of the RODEO project. The goal for this project is to make near real-time weather observations from land based station easily available. The data will be published on both a message queue using MQTT and EDR compliant APIs. Metadata will also be made available through OGC Records APIs. The system architecture is portable, scalable and modular for taking into account possible future extensions to existing networks and datasets (e.g. 3rd party surface observations).

RODEO BUFR Tools

This tool handles the BUFR messages:

• ecoding the messages for E-SOH/openradardata ingestion
• providing E-SOH API output in BUFR format

The library suports ECMWF ecCodes, WMO and OPERA BUFR tables.

Installation

Create virtual environment

python3 -m venv bufr-venv

Activate

source bufr-venv/bin/activate

Install rodeo-bufr-tools

pip install rodeo-bufr-tools

Install BUFR table files:

• WMO(for example version 44)

  wget https://github.com/wmo-im/BUFR4/archive/refs/tags/v44.zip
  unzip v44.zip
  export BUFR_TABLE_DIR=./BUFR4-44/txt/
  

• ECMWF Eccodes

  sudo apt install libeccodes-data
  export BUFR_TABLE_DIR=/usr/share/eccodes/definitions/bufr/tables/0/wmo
  

Usage

Dump BUFR content

# Dump BUFR file(s)

import os
import sys

from bufr_tools import bufr2txt

if __name__ == "__main__":

    msg = ""

    if len(sys.argv) > 1:
        for i, file_name in enumerate(sys.argv[1:]):
            if os.path.exists(file_name):
                msg = bufr2txt.bufr2text(file_name)
                print(msg)
                print(file_name)
            else:
                print("File not exists: {0}".format(file_name))
                exit(1)
    else:
        print(f"Usage: python3 {sys.argv[0]} <bufr_file1> <bufr_file2> ...", file=sys.stderr)
        sys.exit(1)

    sys.exit(0)

Create E-SOH message(s)

Print E-SOH message

# Extract BUFR file(s) to E-SOH ingest json format

import os
import sys

from bufr_tools import create_mqtt_message_from_bufr

if __name__ == "__main__":

    msg = ""

    if len(sys.argv) > 1:
        for i, file_name in enumerate(sys.argv[1:]):
            if os.path.exists(file_name):
                msg = create_mqtt_message_from_bufr.bufr2mqtt(file_name)
                for m in msg:
                    print("======")
                    print(m)
            else:
                print("File not exists: {0}".format(file_name))
                exit(1)
    else:
        print(f"Usage: python3 {sys.argv[0]} <bufr_file1> <bufr_file2> ...", file=sys.stderr)
        sys.exit(1)

    sys.exit(0)

Encode BUFR content from Coverage json

# Convert E-SOH coverage json to BUFR format

import os
import sys

from bufr_tools import covjson2bufr

if __name__ == "__main__":
    bufr_schema = "default"

    if len(sys.argv) > 1:
        for i, file_name in enumerate(sys.argv):
            if i > 0:
                if os.path.exists(file_name):
                    with open(file_name, "rb") as file:
                        coverage_str = file.read()
                        bufr_content = covjson2bufr.covjson2bufr(coverage_str, bufr_schema)
                        with open("test_out.bufr", "wb") as file:
                            file.write(bufr_content)
                else:
                    print("File not exists: {0}".format(file_name))
                    exit(1)
    else:
        print("Usage: python3 covjson2bufr.py coverage.json")

    exit(0)