Changelog¶

1.8.4¶

SASKTRAN-TIR is now a part of the main sasktran package instead of an extension module
SASKTRAN-DO is now part of the main sasktran package instead of an extension module

Development of the model has moved over to github, see https://github.com/usask-arg/sasktran
Fixed several bugs involving running sasktran on non-anaconda based python environments
Built experimental wheels for osx x86_64, python 3.8, 3.9, 3.10, 3.11

Added the sk.UserDefinedAbsorptionPressure optical property which is a user defined optical property as a function of pressure, temperature, wavelength, and a broadener
Added the sk.UserDefinedScatterConstantHeight optical property which is used to set scattering properties for the SASKTRAN-DO engine.
Added a few osculating spheroid functions and the ability for the NadirGeometry class to adjust lines of sight based on the geoid used
Fix a bug with HRSSApprox and HITRAN
Considerably speed up the loading of the Baum table
Added internal functionality to allow for better interfacing between the optical properties and SASKTRAN-DO
Added Mie interface wrapper, still to be documented.
Add option to BaumSpecies to set the name.
Added some internal methods in SASKTRAN-HR to better specify diffuse profile locations

Add the ability for HR to calculate weighting functions for multiple species simultaneously
Added a spectral varying BRDF option
Added the option for HR to calculate weighting functions with respect to surface reflectance when directly viewing the surface

Fix HR WF calculation for scattering species when operating in vector mode
Add an option to the HR engine to calculate cell optical depths
Fix a bug where the default settings for HR vector mode were not precise
Multithreading improvements when running on a large number of threads
Added EngineHRSSapprox which uses HR to calculate radiance using an SS approximation
Added support for Python 3.9 (still in experimental phases)
Added documentation for the occultation and monte carlo engines in EngineOCC and EngineMC specifically
Added support for calculating box AMFs with the MC engine
Added support for inelastic Ramen scattering with the MC engine
Added experimenal support for solar refraction in the HR engine
Improved support and documentation for Baum ice crystal calculations in HR

Build the package for Python 3.8
Large update to HITRAN internals to speed up calculations
Updates to the internal MSIS90 model to extend altitude range up to 200-300 km
Added O2O2 collisional cross sections
Added an experimental option to disable single scattering sources along the LOS.
Bug fixes for the Baum ice crystal database

Large update on the underlying package orientation, sasktranif is now part of the sasktran wheel.
Update HITRAN to 2016
Add options to download HITRAN and PRATMO binary files

Fixed a bug where the polarization basis returned back by both MC and HR engines were not correct
Fixed a deprecation warning in pyyaml 5.1
Fixed a deprecation warning in numpy 1.16

Added BaumIceCrystal optical property and SpeciesBaumIceCloud species
Fix a bug where output_format=’xarray’ was not working correctly when engine.wavelengths was a scalar
Added A Band emission model

Added examples showing how to obtain diagnostic information from SASKTRAN-HR
Added support for basic thermal emissions
Improved the xarray output radiance structure when weighting functions are calculated
Updated required SASKTRANIF to version 4.2.6, SKTRAN_Disco to 0.1.12