{
"cells": [
{
"cell_type": "markdown",
"metadata": {
"hideCode": true,
"hidePrompt": true
},
"source": [
"# Concentration de CO2 dans l'atmosphère depuis 1958"
]
},
{
"cell_type": "code",
"execution_count": 1,
"metadata": {
"hideCode": true,
"hidePrompt": true
},
"outputs": [],
"source": [
"import os\n",
"import urllib.request\n",
"import pandas as pd\n",
"import matplotlib.pyplot as plt\n",
"\n",
"%matplotlib inline"
]
},
{
"cell_type": "markdown",
"metadata": {
"hideCode": true,
"hideOutput": true,
"hidePrompt": true
},
"source": [
"Dans un premier temps, nous vérifions que le fichier de données local est présent, sinon nous le téléchargeons depuis l'URL."
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"hideCode": true,
"hidePrompt": true
},
"outputs": [],
"source": [
"data_url = \"https://scrippsco2.ucsd.edu/assets/data/atmospheric/stations/in_situ_co2/weekly/weekly_in_situ_co2_mlo.csv\"\n",
"data_file = \"weekly_in_situ_co2_mlo.csv\"\n",
"\n",
"if not os.path.exists(data_file):\n",
" urllib.request.urlretrieve(data_url, data_file)"
]
},
{
"cell_type": "markdown",
"metadata": {
"hideCode": true,
"hidePrompt": true
},
"source": [
"Les données sont ensuite chargées à l'aide de pandas."
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"hideCode": true,
"hidePrompt": true
},
"outputs": [
{
"data": {
"text/html": [
"\n",
"\n",
"
\n",
" \n",
" \n",
" | \n",
" CO2 | \n",
"
\n",
" \n",
" | Date | \n",
" | \n",
"
\n",
" \n",
" \n",
" \n",
" | 1958-03-29 | \n",
" 316.19 | \n",
"
\n",
" \n",
" | 1958-04-05 | \n",
" 317.31 | \n",
"
\n",
" \n",
" | 1958-04-12 | \n",
" 317.69 | \n",
"
\n",
" \n",
" | 1958-04-19 | \n",
" 317.58 | \n",
"
\n",
" \n",
" | 1958-04-26 | \n",
" 316.48 | \n",
"
\n",
" \n",
"
\n",
"