File:NASA-GISTEMP-Hemispheres.svg
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English: Graph showing the development of average temperatures from 1880 till 2023 for each hemisphere separately. Data from https://data.giss.nasa.gov/gistemp/graphs/. This plot may and should be updated using the code below, whenever new data points become available. |
| Date | |
| Source | Own work |
| Author | Geek3 |
| SVG development |  This plot was created with Matplotlib. |
| Source code | Python code#! /usr/bin/env python3
# -*- coding:utf8 -*-
import matplotlib.pyplot as plt
import numpy as np
from math import *
plt.style.use('classic')
years = range(1880, 2023+1)
northern = [
-.28, -.17, -.20, -.27, -.42, -.43, -.43, -.43, -.23, -.17, # 188x
-.38, -.26, -.39, -.47, -.38, -.30, -.19, -.16, -.28, -.21, # 189x
-.09, -.13, -.33, -.38, -.48, -.29, -.24, -.48, -.46, -.49, # 190x
-.44, -.42, -.46, -.42, -.19, -.14, -.42, -.58, -.40, -.35, # 191x
-.31, -.12, -.28, -.22, -.19, -.14, .01, -.14, -.10, -.34, # 192x
-.02, .04, -.06, -.26, .00, -.09, -.03, .12, .16, .09, # 193x
.18, .23, .13, .18, .27, .10, .03, .08, -.02, -.03, # 194x
-.15, .05, .06, .24, -.02, -.09, -.23, .04, .15, .12, # 195x
.08, .08, .13, .14, -.19, -.14, -.02, .03, -.07, -.03, # 196x
-.04, -.15, -.17, .10, -.18, -.05, -.21, .12, .02, .08, # 197x
.17, .37, .05, .25, .04, -.00, .13, .25, .37, .27, # 198x
.53, .41, .14, .19, .37, .58, .27, .52, .71, .48, # 199x
.50, .64, .71, .75, .66, .86, .82, .85, .68, .73, # 200x
.90, .74, .81, .80, .92, 1.18, 1.31, 1.18, 1.03, 1.21, # 201x
1.35, 1.14, 1.16, 1.50] # 202x
southern = [
-.04, .01, .00, -.06, -.14, -.24, -.20, -.28, -.12, -.03, # 188x
-.32, -.19, -.15, -.15, -.21, -.14, -.02, -.04, -.25, -.13, # 189x
-.06, -.17, -.21, -.36, -.45, -.22, -.20, -.29, -.40, -.47, # 190x
-.42, -.45, -.24, -.26, -.10, -.13, -.30, -.35, -.20, -.19, # 191x
-.23, -.25, -.29, -.31, -.35, -.30, -.22, -.29, -.29, -.38, # 192x
-.29, -.22, -.26, -.32, -.25, -.30, -.26, -.18, -.19, -.13, # 193x
.09, .16, .00, -.02, .14, .09, -.17, -.14, -.20, -.20, # 194x
-.21, -.18, -.03, -.07, -.25, -.20, -.16, .05, -.03, -.06, # 195x
-.13, .03, -.06, -.03, -.20, -.07, -.09, -.08, -.09, .15, # 196x
.09, -.02, .20, .23, .03, .02, .01, .24, .11, .25, # 197x
.35, .27, .23, .38, .28, .24, .23, .41, .40, .27, # 198x
.37, .40, .31, .28, .26, .32, .39, .42, .52, .28, # 199x
.29, .44, .54, .50, .42, .50, .46, .47, .41, .59, # 200x
.55, .47, .48, .55, .57, .62, .72, .66, .66, .74, # 201x
.68, .55, .62, .85] # 202x
n_avg = 5
northern_avg = np.convolve(northern, np.ones((n_avg,))/n_avg, mode='valid')
southern_avg = np.convolve(southern, np.ones((n_avg,))/n_avg, mode='valid')
plt.rc('font', size=15)
fig = plt.figure(figsize=(680 / 90.0, 450 / 90.0), dpi=72)
plt.plot(years, northern, 'ro-', linewidth=0.7, markersize=4, label='Northern Hemisphere')
plt.plot(years[n_avg//2:-(n_avg//2)], northern_avg, 'r-', lw=2.5, zorder=-1, label='5 Year Mean')
plt.plot(years, southern, 'bo-', linewidth=0.7, markersize=4, label='Southern Hemisphere')
plt.plot(years[n_avg//2:-(n_avg//2)], southern_avg, 'b-', lw=2.5, zorder=-1, label='5 Year Mean')
plt.grid(True)
plt.xlim(floor(min(years)/5.)*5., ceil(max(years)/5.)*5.)
plt.ylim(-0.6, 1.52)
plt.ylabel(u'Temperature Anomaly (\u00B0C)')
plt.title('Hemispheric Temperature Change')
plt.legend(loc='upper left', prop={'size':13})
plt.tight_layout()
plt.savefig('NASA-GISTEMP-Hemispheres.svg')
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:31, 24 August 2024 | | 725 × 480 (86 KB) | Geek3 (talk | contribs) | update 2023 |
| 13:56, 3 August 2021 |  | 680 × 450 (82 KB) | Geek3 (talk | contribs) | update 2020 | |
| 13:01, 18 February 2019 |  | 680 × 450 (92 KB) | Geek3 (talk | contribs) | added 2018 values | |
| 23:09, 27 March 2018 |  | 680 × 450 (94 KB) | Geek3 (talk | contribs) | User created page with UploadWizard |
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