""" RHEAS module for retrieving rainfall data from the Climate Hazard Group
InfraRed Precipitation with Station (CHIRPS) data archive.
.. module:: chirps
:synopsis: Retrieve CHIRPS rainfall data
.. moduleauthor:: Kostas Andreadis <kandread@jpl.nasa.gov>
"""
from datetime import timedelta
from datasets.decorators import geotiff, http
import datasets
table = "precip.chirps"
@geotiff
@http
[docs]def fetch(dbname, dt, bbox):
"""Downloads CHIRPS rainfall data from the data server."""
url = "ftp://ftp.chg.ucsb.edu/pub/org/chg/products/CHIRPS-2.0/global_daily/tifs/p05/{0:04d}/chirps-v2.0.{0:04d}.{1:02d}.{2:02d}.tif.gz"
return url, bbox, dt
[docs]def download(dbname, dts, bbox=None):
res = 0.05
for dt in [dts[0] + timedelta(tt) for tt in range((dts[-1] - dts[0]).days + 1)]:
data, lat, lon, t = fetch(dbname, dt, bbox)
datasets.ingest(dbname, table, data, lat, lon, res, t)
[docs]def dates(dbname):
dts = datasets.dates(dbname, table)
return dts