{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "\n# Skew-T plot of a sounding\n\nThis example shows how to make a Skew-T plot from a sounding\nand calculate stability indicies.\n" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "collapsed": false }, "outputs": [], "source": [ "import xarray as xr\nfrom arm_test_data import DATASETS\nfrom matplotlib import pyplot as plt\n\nimport act\n\n# Make sure attributes are retained\nxr.set_options(keep_attrs=True)\n\n# Read data\nfilename_sonde = DATASETS.fetch('sgpsondewnpnC1.b1.20190101.053200.cdf')\nsonde_ds = act.io.arm.read_arm_netcdf(filename_sonde)\n\nprint(list(sonde_ds))\n# Calculate stability indicies\nsonde_ds = act.retrievals.calculate_stability_indicies(\n sonde_ds, temp_name='tdry', td_name='dp', p_name='pres'\n)\nprint(sonde_ds['lifted_index'])\n\n# Set up plot\nskewt = act.plotting.SkewTDisplay(sonde_ds, figsize=(15, 10))\n\n# Add data\nskewt.plot_from_u_and_v('u_wind', 'v_wind', 'pres', 'tdry', 'dp')\n\nplt.show()\n# One could also add options like adiabats and mixing lines\nskewt = act.plotting.SkewTDisplay(sonde_ds, figsize=(15, 10))\nskewt.plot_from_u_and_v(\n 'u_wind',\n 'v_wind',\n 'pres',\n 'tdry',\n 'dp',\n plot_dry_adiabats=True,\n plot_moist_adiabats=True,\n plot_mixing_lines=True,\n)\nplt.show()\nsonde_ds.close()" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.14.3" } }, "nbformat": 4, "nbformat_minor": 0 }