Data

Tools

Indexes

Applications

Experiments

Open Sustainable Technology

A curated list of open technology projects to sustain a stable climate, energy supply, biodiversity and natural resources.

Recent Releases of cosipy

cosipy - COSIPY v2.0.2

What's Changed

Full Changelog: https://github.com/cryotools/cosipy/compare/v2.0.1...v2.0.2

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn 5 months ago

cosipy - COSIPY v2.0.1

What's Changed

New Contributors

Full Changelog: https://github.com/cryotools/cosipy/compare/v2.0...v2.0.1

Cryosphere - Glacier and Ice Sheets - Python
Published by gampnico 5 months ago

cosipy - COSIPY v2.0

COSIPY 2.0

This update is not backwards-compatible with previous versions of COSIPY.

TL;DR

  • New configuration system - convert your old config files using convert_config.py.
  • Critical bug fixes - surface temperature, refreezing, snowfall, radiation.
  • Performance - up to 30% faster for some simulations.
  • Expanded support for WRF.
  • Pip package support - install once, run anywhere.
  • Documentation update - API, tutorial.
  • CI workflow.

Please read the updated tutorial on cosipy.readthedocs.io to learn how to use the new configuration system.

Features

  • Configuration system now uses .toml files. You can now run multiple simulations from the same root directory.
  • Configuration for utilities is now centralised to a single file.
  • .py configuration files for COSIPY 1.4 can be converted to the new .toml system with a utility script.
  • Expanded support for WRF.
  • Packaging support for pip - installing with pip provides shortcuts for common COSIPY commands.
  • Updated tutorial, API, and documentation.

Breaking changes

  • Drops support for Python 3.8 and lower.
  • Replaces the entire configuration system.
  • Centralises the source directory structure.
  • Removes the output and output.full files. Output variable selection is now in the config file.
  • Some arguments have been renamed to avoid namespace collision. -c, -x, -u, -s are now reserved for handling configuration files.
  • Some output attributes and variable names have been corrected.

Critical Bug Fixes

  • The surface temperature solver no longer terminates prematurely.
  • Refreezing now conserves mass and uses the correct units. Thanks to @MarcusGastaldello for providing both these fixes.
  • Snowfall is now in metres water equivalent instead of ice equivalent. Thanks to @Richteny for spotting this.
  • Date comparisons now compare times instead of string lengths.
  • Incorrect conversion to radians in radiation module.
  • Fixed typos in output variable names.

Optimisations

  • Simulations run up to 30% faster.
  • Significant optimisations across all modules - with thanks to @MarcusGastaldello and @Richteny.
  • "Secant" is now the default minimisation algorithm.
  • Optimisations for saving data to disk.
  • Optimisations for preprocessing scripts.

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn 5 months ago

cosipy - COSIPY v1.4

Major runtime optimisation release:

  • Optimisation of runtime by implementing numba
  • Added SLSQP and Newton optimisation for finding surface temperature
  • New ground heat flux calculation (does not depend on layer heights any more)
  • Layer ice fraction added to the restart file
  • Snow properties timestamp since last snowfall now to obtain correct albedo values after restart (before it was relative to selected start point) t
  • Added minimum_snowfall to constants (minimum snowfall per timestep) and separate it from minimum_snow_layer_height (which is used within the adaptive regridding)
  • Initial top temperature of snowpack depends on air temperature of first-time step now (before it was a constant)
  • Change names of initial density constants
  • Better constrained initial density and temperature profiles
  • Heat equation has been vectorized (runtime optimisation)
  • README and requirements.txt updated
  • yaml log has been deleted

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn over 4 years ago

cosipy - COSIPY v1.3.1 - update of version 1.3

  • fixes wrf2cosipy utility
  • fixes aws2cosipy utility
  • bug fix rain heat flux
  • fixes subsurface modules
  • output SNOWFALL variable now in m w.e. (before is was m)

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn over 4 years ago

cosipy - COSIPY v1.3 – An open-source coupled snowpack and ice surface energy and mass balance model

New Major released - version used for our revised GMD paper (https://www.geosci-model-dev-discuss.net/gmd-2020-21/#discussion):

  • new densification parameterisations (now available: Boone, Vionnet, emprical, constant)
  • bugfix radiation model (Wohlfahrt et al, 2016)
  • bugfixes utility 'wrf2cosipy'
  • new plot profile utility
  • improved utility 'create static file' (Error in case of NaNs, differet method to calculate aspect (solves problem with NaNs with high spatial resolutions for aspect)
  • improved utility 'aws2cosipy' (Error in case of NaNs, G outside glacier now NaN instead of zero)
  • improved evaluation, non WRF grids should work now

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn almost 5 years ago

cosipy - Coupled snowpack and ice surface energy and mass balance model in Python v1.2

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn over 5 years ago

cosipy - Coupled snowpack and ice surface energy and mass balance model in Python - Version 1.1

COSIPY solves the energy balance at the surface and is coupled to an adaptive vertical multilayer snow and ice module.

Cryosphere - Glacier and Ice Sheets - Python
Published by AnsArn about 6 years ago