SMHI E-hype3 river run-off climatology.
=======================================

by j. w. nielsen, dmi, feb. 2020.

This is how to download model data for European run-off
from the Swedish hydrological model E-hype3,
available to the general public at the SMHI Hype project page

	https://hypeweb.smhi.se/

Data sets are produced using the Swedish hydrological HYPE model, European version 3.
The model has 35408 catchments in total, of which 3032 are coastal.

Daily run-off is presented along the entire European coast line,
from Iceland to Israel, for the 30-year period 1981-2010.

This particular data set is available for download in Excel format,
one file per catchment.

Please note, however, that this free data set is not the most recent one.
An updated and extended version, 1980-2016/1, may be purchased at SMHI.
The update relates to the weather forcing, while the hydrological model is unchanged.
The two data sets are "similar, but different".

Real time data is similar to the updated version.
It is produced using ECMWF weather data as input.
A daily ten day forecast service requires a written agreement and an annual fee.
This is the status as I write, winter 2020.

The historical Europe data set is found at the SMHI url
	https://hypeweb.smhi.se/explore-water/historical-data/europe-time-series/

from where you may download using e.g. wget, viz.
	% wget (SMHIurl)/(index)

looping through all catchment indices.
Each index is a 7-digit number as indicated in this E-hype3 table file
	e-hype3-coastal.tab.txt

The file is provided on this NOOS page:
	http://noos.eurogoos.eu/members-products/on-river-discharge/

The table gives
	catchment index		used to download
	geographical lat-lon	used to connect with ocean model grid

Downloads are in Excel format, which may be converted to plain text using e.g.
	% ssconvert (index) (index).txt

When this is done, you have 3032 30-year series of daily run-off.
Based on this, production of annual, monthly, or calendar day climatology is straight-forward.

SMHI contact person:
	Niclas Hjerdt <niclas.hjerdt@smhi.se>

Citation, please refer to
	https://hypeweb.smhi.se/explore-water/geographical-domains/#europehype