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HEMIP_GIT/Code/SILO_download_lat_lon.py

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Python

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# -*- coding: utf-8 -*-
"""
Created on Mon Feb 3 12:54:11 2020
@original author: Saniya Khan
@adopted code: Valentin Heimhuber
This code uses a coords.csv file with a list of lat lon locations to extract SILO gridded climatology data at each location and
writes it into a csv file
SILO gridded data is 0.05° × 0.05° or 50x50km
More information about the interpolated griddes SILO datasets can be found here: https://www.longpaddock.qld.gov.au/silo/faq/#faq5
Available variables are:
"""
from __future__ import unicode_literals
import urllib.request
import urllib.parse
import pandas as pd
from io import StringIO
from itertools import repeat
api_url = 'https://www.longpaddock.qld.gov.au/cgi-bin/silo'
path_to_coordscsv_file = 'J:/Project/wrl2018064 Fisheries RAP/04_Working/05_Modelling/RMA/HEMIP/Global_Data/Climatology/SILO/'
#replace by actual geocodes
#geocode=pd.DataFrame([['YANKALILLA','-35.494262', '138.362596'],
# ['PORT WAKEFIELD','-34.185349', '138.155379']],columns=['Brigade','latitude','longitude'])
list_of_weather=[]
weather=pd.DataFrame()
def getGeocode():
geocode= pd.read_csv(path_to_coordscsv_file + "coords.csv")
print(geocode.columns)
geocode.set_index('Brigade')
#print("dfdfdfD")
#print(geocode)
return geocode;
def buildUrl(lat,long):
params = {
'format': 'standard',
'lat': str(lat),
'lon': str(long),
'start': '20090101',
'finish': '20181231',
'username': 'sk3862@drexel.edu',
'password': 'silo'
}
url = api_url + '/DataDrillDataset.php?' + urllib.parse.urlencode(params)
return url
def sendRequest(url):
with urllib.request.urlopen(url) as remote:
data = remote.read()
s=str(data,'utf-8')
data_formatted = StringIO(s)
df=pd.read_csv(data_formatted)
return df
def getData(lat,long) :
return weather
#lat long index
geocode=getGeocode()
for i in range(len(geocode)):
print(i)
brigade=[geocode.loc[i,'Brigade']]
url=buildUrl(geocode.loc[i,'latitude'], geocode.loc[i,'longitude']) #url for lat long
df=sendRequest(url) #ping the australian websiten
if i==0:
headr=df.iloc[31,:]
headr.reset_index(inplace=True, drop=True)
headr.replace('\s+', ',',regex=True,inplace=True) #separate out the header
headr[0]=headr[0]+",Brigade"+",Latitude"+",Longitude";
list_of_weather.append(headr)
df=df[32:(len(df)-1)]#cleaning remove header, indexes
df.replace('\s+', ',',regex=True,inplace=True) #make csv space delimited to comma delimited
df=df.iloc[:,-1]#cleaning
df.name=brigade[0]
formatted_data=df+","+brigade[0]+","+str(geocode.loc[i,'latitude'])+","+str(geocode.loc[i,'longitude'])
list_of_weather.append(formatted_data)#combine for different locations
#weather=pd.concat(list_of_weather)
#weather = [getData(x, y) for x, y in zip(geocode['latittude'], geocode['longitude'])]
#reformat into a nice dataframe with colnames and save that as CSV
col_names=["Date (yyyymmdd)","Day","T.Max(oC)","Smx","T.Min(oC)","Smn","Rain (mm)","Srn","Evap(mm)","Sev", "Radn(MJ/m2)","Ssl" ,"VP (hPA)","Svp","RHmaxT(%)" ,"RHminT(%)" ,"Date2(ddmmyyyy)","Brigade","Latitude","Longitude"]
df = pd.DataFrame(weather.str.split(',',n=19).tolist(),
columns = col_names)
df = df.iloc[1:]
print(df.head())
df.to_csv(path_to_coordscsv_file + 'SILO_weather_data' + brigade[0] + '.csv')