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@Zeitsperre Zeitsperre released this 23 Jun 15:11
v0.44.0
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Learn about vigilant mode.

Contributors to this version: Éric Dupuis (@coxipi), Trevor James Smith (@Zeitsperre), Pascal Bourgault (@aulemahal), Ludwig Lierhammer (@ludwiglierhammer), David Huard (@huard).

Announcements

  • xclim: xarray-based climate data analytics has been published in the Journal of Open Source Software (DOI:10.21105/joss.05415). Users can now make use of the Cite this repository button in the sidebar for academic purposes. Many thanks to our core developers and user base for their fine contributions over the years! (GH/95, PR/250).
  • xclim now officially supports Python3.11. (PR/1388).

New indicators

  • Several new indices and indicators:
    • snowfall_{frequency | intensity} for calculating the {percentage of | mean snowfall intensity on} days with snowfall above a threshold. (GH/1352, PR/1358)
    • {sfcWind | sfcWindmax}_{max | mean | min} for calculating the {max | mean | min} daily {mean | max} wind speed. (GH/1352, PR/1358)
    • {precip | liquid_precip | solid_precip}_average} for calculating the mean daily {total precipitation | liquid precipitation | solid precipitation } amount. (GH/1352, PR/1358)
    • {cold | dry}_spell_max_length for calculating maximum length of {cold | dry} spell events. (GH/1352, PR/1359).
    • dry_spell_frequency for calculating total number of dry spells. (GH/1352, PR/1359).
    • hardiness_zones with supported methods "usda" (USA) and "anbg" (Australia) for calculating hardiness classifications from climatologies. (GH/1290, PR/1396).
  • New indicator late_frost_days for calculating the number of days where the daily minimum temperature is below a threshold over a given time period. (GH/1352, PR/1361).

New features and enhancements

  • xclim.sdba.processing.escore performance was improved with a faster runtime (PR/1360).
  • New generic function (flux_and_rate_converter) converting flux to a rate (and vice-versa) using a density. snw_to_snd and snd_to_snw were refactored using this function. (GH/1352, PR/1358)
  • New function (prsn_to_prsnd) to convert snowfall flux ([mass] / [area] / [time]) to snowfall rate ([length] / [time]) using snow density ([mass] / [volume]). (GH/1352, PR/1358)
  • New variables: Snowfall rate prsnd and surface maximum wind speed sfcWindmax. (GH/1352, PR/1358).
  • Docstring for freq links to pandas offset aliases documentation. (GH/1310, PR/1392).
  • New function xclim.indces.run_length.extract_events for determining runs whose starting and stopping points are defined through run length conditions. (PR/1256).
  • Stats functions frequency_analysis now takes method parameter to select other fitting methods such as PWM or MOM. (GH/1168, PR/1398).
  • xclim.indices.frost_days now accepts an **indexer parameter for calculating frost days over a temporal subset of the given dataset. (GH/1352, PR/1361).
  • New function xclim.indices.generic.get_zones attributing a histogram bin index (a zone) to each value in an input array. (GH/1290, PR/1396).

Bug fixes

  • Fixed a bug in xclim.core.calendar.time_bnds when using DataArrayResample objects, caused by an upstream change in xarray 2023.5.0. (GH/1368, PR/1377).
  • ensembles.change_significance will returns NaNs when the input values are all NaNs, instead of failing. (GH/1379, PR/1380).
  • Accelerated import of xclim by caching the compilation of guvectorize functions. (PR/1378).
  • Fixed many issues with xclim.indices.helpers.cosine_of_solar_zenith_angle, the signature changed. (GH/1110, PR/1399).

Internal changes

  • In order to ensure documentation can be rebuilt at a later time, errors raised by sphinx linkcheck are now set to be ignored when building the documentation. (PR/1375).
  • With the publication of xclim, the code repository now offers a CITATION.cff configuration for users to properly cite the software (APA formatted and raw BibTeX) for academic purposes. (GH/95, PR/250).
  • Logging messages emitted when redefining units via pint (caused by logging interactions with dependencies) have been silenced. (GH/1373, PR/1384).
  • Fixed some annotations and dev recipe dependencies issues to allow for the development of xclim inside a python3.11 environment. (GH/1376, PR/1381).
  • The deprecated mamba-org/provision-with-micromamba GitHub Action has been replaced with mamba-org/setup-micromamba. (PR/1388).
  • xclim GitHub CI workflows now run builds against Python3.11. (PR/1388).
  • In indices, verify that all parameters of type Quantified that have a default value have their dimension declared. (GH/1293, PR/1393).
  • Updated roy_extremeprecip_2021 to the newly published paper. (PR/1394).
  • Two new GitHub CI Actions have been added to the existing Workflows (PR/1390):
    • actions/add-to-project: Automatically adds issues to the xclim project.
    • saadmk11/github-actions-version-updater: Updates GitHub Action versions in all Workflows (triggered monthly).
  • Added method parameter to frequency_analysis and fa. (GH/1168, PR/1398).

Breaking changes

  • Signature of hot_spell_{frequency | max_length | total_length} : thresh_tasmax modified to thresh. (GH/1352, PR/1359).
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