heat_low_trends

https://github.com/kittyattwood/heat_low_trends

Science Score: 44.0%

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Last synced: 6 months ago · JSON representation ·

Repository

Basic Info

Host: GitHub
Owner: kittyattwood
Language: Python
Default Branch: main
Size: 15.6 KB

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Created 9 months ago · Last pushed 9 months ago

Metadata Files

Readme Citation

README.md

heatlowtrends

Code used in the analysis and production of figures. The workflow is documented below. Contact: kitty.attwood@ouce.ox.ac.uk

Detect heat lows using daily ERA5 data: heatlowdetection.py

Global ERA5 data requirements:

- Daily LLAT data per region located at: {data_dir}{box}_LLAT_1980_2024.nc
    LLAT is calculated as the difference in ERA5 geopotential height at the two specified pressure levels. Hourly data is resampled to daily.
    Available from the CDS datastore https://cds.climate.copernicus.eu/datasets/reanalysis-era5-pressure-levels

- Global daily vertical velocity data (300 hPa) in yearly files at: {daily_w_dir}era5_daily_vertical_velocity_{year}.nc
    Hourly vertical velocity is resampled to daily. Files are aggregated by year. Available from the CDS datastore: https://cds.climate.copernicus.eu/datasets/reanalysis-era5-pressure-levels

- Global land-sea mask file located at: {data_dir}era5_land_sea_mask.nc
    Invariant, downloadable from the CDS datastore: https://cds.climate.copernicus.eu/datasets/reanalysis-era5-single-levels

- ERA5 climatological surface pressure at: {data_dir}era5_avg_sp_1980-2024.nc
    Calculated from daily surface pressure. Available at: https://cds.climate.copernicus.eu/datasets/reanalysis-era5-single-levels

Generate statistics on trends and save to csv files: calculate_statistics.py
Plot seasonal size and frequency trends using csv files created in (2): plotseasonaltrends.py
Plot spatial trends in heat low frequency using netCDF files created in (1): plotspatialtrends.py

Owner

Login: kittyattwood
Kind: user

Repositories: 1
Profile: https://github.com/kittyattwood

Citation (CITATION.cff)

cff-version: 1.0.0
message: "If you use this software, please cite it as below."
authors:
- family-names: "Attwood"
  given-names: "Kitty"
  orcid: "https://orcid.org/0009-0006-1652-947X"
title: "Heat Low Trends"
version: 1.0.0
doi: 10.5281/zenodo.15633855
date-released: 2025-06-10
url: "https://github.com/kittyattwood/heat_low_trends"

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