1. 2019. NumPy. https://www.numpy.org/. 2019. NumPy. https://www.numpy.org/.
2. 2019. Python Data Analysis Library. https://pandas.pydata.org/. 2019. Python Data Analysis Library. https://pandas.pydata.org/.
3. 2019. www.nohrsc.noaa.gov. https://www.nohrsc.noaa.gov. 2019. www.nohrsc.noaa.gov. https://www.nohrsc.noaa.gov.
4. 2020. National Operational Hydrologic Remote Sensing Center (NOHRSC) Snow Data. https://www.nohrsc.noaa.gov/interactive/html/map.html 2020. National Operational Hydrologic Remote Sensing Center (NOHRSC) Snow Data. https://www.nohrsc.noaa.gov/interactive/html/map.html
5. 2020. Snow Data Assimilation System (SNODAS) Data Products at NSIDC. https://nsidc.org/data/g02158 2020. Snow Data Assimilation System (SNODAS) Data Products at NSIDC. https://nsidc.org/data/g02158