smrt 1.3

The Snow Microwave Radiative Transfer (SMRT) model is a highly modular model to compute the thermal emission and backscattering coefficient of snowpacks and other cryospheric bodies in the microwave domain.

Snow Microwave Radiative Transfer model

SMRT is a radiative transfer model to compute emission and backscatter from snowpack.

Getting started is easy, follow the instructions and explore the other repositories with examples in the 'smrt-model' github organization or read the detailed 'documentation'.

If you want to try without installing anything on your computer, use free mybinder.org notenooks:

Quick Installation

To install the latest stable release:

pip install smrt

Alternatively, the latest developments are available using:

pip install git+https://github.com/smrt-model/smrt.git

or by 'manual installation'.

A simple example

An example to calculate the brightness temperature from a one-layer snowpack.

from smrt import make_snowpack, sensor_list, make_model

# create a snowpack
snowpack = make_snowpack(thickness=10.,   # snowpack depth in m
                         microstructure_model="sticky_hard_spheres",
                         density=320.0,   # density in kg/m3
                         temperature=260, # temperature in Kelvin
                         radius=100e-6)   # scatterers raidus in m

# create the sensor (AMSRE, channel 37 GHz vertical polarization)
radiometer = sensor_list.amsre('37V')

# create the model including the scattering model (IBA) and the radiative transfer solver (DORT)
m = make_model("iba", "dort")

# run the model
result = m.run(radiometer, snowpack)

print(result.TbV())

License information

See the file LICENSE.txt for terms & conditions for usage, and a DISCLAIMER OF ALL WARRANTIES.

DISCLAIMER: This version of SMRT is under peer review. Please use this software with caution, ask for assistance if needed, and let us know any feedback you may have.

Copyright (c) 2016-2022 Ghislain Picard, Melody Sandells, Henning Löwe.

Other contributions

• Nina Maass
• Ludovic Brucker
• Marion Leduc-Leballeur
• Mai Winstrup
• Carlo Marin
• Justin Murfitt
• Julien Meloche