0.12.0

Version 0.12 (2020/01/05)

This is the first release that only supports Python 3.

API Changes

• precipitable_water now issues a FutureWarning due to an impending change to its function signature in 1.0--this will change the signature to precipitable_water(pressure, dewpt, *, bottom=None, top=None) for better consistency with the rest of the library. To avoid this warning, import the function with from metpy.future import precipitable_water
• storm_relative_helicity now issues a FutureWarning due to an impending change to its function signature in 1.0--this will change the signature to storm_relative_helicity(heights, u, v, depth, *, bottom, storm_u, storm_v) for better consistency with the rest of the library. To avoid this warning, import the function with from metpy.future import storm_relative_helicity
• dewpoint_rh has been deprecated in favor of dewpoint_from_relative_humidity, and will be removed in 1.0
• Removed previously deprecated functions get_wind_components, get_wind_dir, get_wind_speed, interp, interpolate_nans, and log_interp as well as the metpy.gridding sub-package.

Highlights

• Added parser for METAR-formatted reports
• Update NEXRAD Level2File to handle future format changes
• Added calculation mixed_layer_cape_cin
• geopotential <-> height calculations modified to use standard gravity
• Added declarative interface for station plots
• Added arrows to go with barbs on station plots
• Added support for Python 3.8, dropped support for Python 2.7
• Compatibility fixes for future versions of Pint
• Enhancements to xarray coordinate identification
• Fixed average spacing calculation in interpolation
• Added 'wide' and 'most_cape' options for LFC/EL
• Added wx_code_to_numeric for converting text weather codes (e.g. '+SNRA') to corresponding WMO code.

Contributors

@ahijevyc, @akrherz, @jthielen, @kgoebber, @mgrover1, @zbruick, and @dopplershift contributed code to this release.

Issues Closed

• Issue 1245 - Fix title in Four Panel Example (PR 1246)
• Issue 1239 - Update NEXRAD Level2File for TDWR (PR 1251)
• Issue 1235 - Consider re-ordering arguments for precipitable_water (PR 1244)
• Issue 1230 - Average Spacing calculation in interpolation incorrect (PR 1255)
• Issue 1229 - Remove Cartopy workaround from stationplot (PR 1254)
• Issue 1222 - Tests failing with matplotlib 3.2.0rc1 (PR 1242)
• Issue 1221 - smooth_n_point doesn't work with temperature units (PR 1253)
• Issue 1211 - metpy.calc.tools imports metpy.calc.basic which creates potential circular import (PR 1213)
• Issue 1207 - Declarative show() does not pop up GUI (PR 1254)
• Issue 1185 - Add explicit API for mixed layer CAPE/CIN calculation (PR 1145)
• Issue 1183 - metpy.testing.assert_array_almost_equal fails to compare array with masked array
• Issue 1090 - Change xarray coordinate identification to enforce dimensionality and allow both lat/lon and x/y identification (PR 1236)
• Issue 955 - Allow barbs and arrows for station plots (PR 1148)
• Issue 870 - Removals/Deprecations in MetPy 0.12 (PR 1195)
• Issue 862 - CAPE/CIN calculations for soundings with 'multiple' LFCs (PR 1138)
• Issue 70 - METAR parsing

In this release 16 issues were closed.

Pull Requests Merged

• PR 1266 - Fixes
• PR 1262 - fix docs
• PR 1261 - Still further updates to pint master branch compatibility
• PR 1259 - Update PlotObs for time and station dimension naming
• PR 1257 - add exception catch
• PR 1255 - Fix interpolation average spacing (1230)
• PR 1254 - Plotting fixes (1229, 1207)
• PR 1253 - Fix smoothing unit-handling (1221, 1138)
• PR 1252 - MNT: Add another NEXRAD file for testing
• PR 1251 - NEXRAD Updates (1239)
• PR 1250 - Further updates to pint master branch compatibility
• PR 1246 - MNT: Update examples for date plotting (1245)
• PR 1244 - Update some function signatures (1235)
• PR 1242 - Fixes for pre-releases (1222)
• PR 1241 - Adds a declarative syntax for point observations
• PR 1238 - Adds function to get numeric wx code
• PR 1236 - Modify xarray coordinate identification from CF axis to generic labels, permitting latitude/longitude identification (1090, 1090)
• PR 1233 - Refactor _reassign_quantity_indexer to avoid modifying dict keys while iterating
• PR 1227 - Add example to PW docstring (1226)
• PR 1225 - Identify 'lv_' variables as vertical coordinates.
• PR 1217 - Update xarray time derivative for subsecond precision
• PR 1213 - avoid potential circular ref by lazy import (1211)
• PR 1212 - Add support for Python 3.8
• PR 1208 - Deprecate dewpoint_rh in favor of dewpoint_from_relative_humidity
• PR 1195 - Removal of deprecations for 0.12 (870)
• PR 1174 - Change geopotential <-> height formulas to use standard gravity
• PR 1163 - Drop support for Python 2.7! (801)
• PR 1148 - Add arrows to StationPlot (955)
• PR 1145 - Add mixed-layer CAPE (1185)
• PR 1138 - Add 'wide' and 'most_cape' options for LFC/EL, options for CAPE (862)
• PR 1081 - METAR Parsing Tools

In this release 31 pull requests were closed.