nonlineartemppy calculates nonlinear temperature distributions using an integrated sine technique. Degree days define time above a specified temperature threshold (e.g. degree days above 30C) and time in each degree define time within a specified temperature threshold (e.g. time in 30C).
degree_days(): calculates degree days within a specified thresholdsdegree_time(): calculates time in each degree at one degree intervals within a specified thresholds.
# Install through pip (make sure pypi-install is installed)
pip install nonlineartemppyimport numpy as np
import pandas as pd
import nonlineartemppy.calculations as nltemp
import io
import pkgutil
# Import Napa data set
data = pkgutil.get_data('nonlineartemppy', 'data/napa.csv')
napa = pd.read_csv(io.BytesIO(data), encoding='utf8', sep=",", dtype={"switch": np.int8})
napa = pd.DataFrame(napa)
# Degree Days
dd_napa = nltemp.degree_days(napa, range(0,5))
dd_napa.head()
date year month day fips county state lat long \
0 1899-12-15 1899.0 12 15 6055 Napa County CA 38.5 -122.5
1 1899-12-16 1899.0 12 16 6055 Napa County CA 38.5 -122.5
2 1899-12-17 1899.0 12 17 6055 Napa County CA 38.5 -122.5
3 1899-12-18 1899.0 12 18 6055 Napa County CA 38.5 -122.5
4 1899-12-19 1899.0 12 19 6055 Napa County CA 38.5 -122.5
tmax tmin tavg dday0C dday1C dday2C dday3C dday4C
0 12.5000 4.1100 8.30500 8.30500 7.30500 6.30500 5.30500 4.30500
1 12.5445 4.2894 8.41695 8.41695 7.41695 6.41695 5.41695 4.41695
2 12.5878 4.4574 8.52260 8.52260 7.52260 6.52260 5.52260 4.52260
3 12.6298 4.6144 8.62210 8.62210 7.62210 6.62210 5.62210 4.62210
4 12.6706 4.7604 8.71550 8.71550 7.71550 6.71550 5.71550 4.71550
# Time in each degree
td_napa = nltemp.degree_time(napa, range(0,5))
td_napa.head()
date year month day fips county state lat long \
0 1899-12-15 1899.0 12 15 6055 Napa County CA 38.5 -122.5
1 1899-12-16 1899.0 12 16 6055 Napa County CA 38.5 -122.5
2 1899-12-17 1899.0 12 17 6055 Napa County CA 38.5 -122.5
3 1899-12-18 1899.0 12 18 6055 Napa County CA 38.5 -122.5
4 1899-12-19 1899.0 12 19 6055 Napa County CA 38.5 -122.5
tmax tmin tdegree0C tdegree1C tdegree2C tdegree3C tdegree4C
0 12.5000 4.1100 0.0 0.0 0.0 0.0 0.02960
1 12.5445 4.2894 0.0 0.0 0.0 0.0 0.01624
2 12.5878 4.4574 0.0 0.0 0.0 0.0 0.00334
3 12.6298 4.6144 0.0 0.0 0.0 0.0 0.00000
4 12.6706 4.7604 0.0 0.0 0.0 0.0 0.00000