HIRHAM5 Regional Climate Model

It’s become clear that data accessibility is a big issue so here I want to provide a link site that to the most recent climate simulation data I have. I have done this before but this page will be more permanent. Ultimately this will become part of the DMI research website, but for now here is a quick and easy link to our data server.

In my day job I do climate simulations with the HIRHAM5 Regional Climate Model, specifically over Greenland but also in the Arctic. We have done a tremendous amount of work in upgrading and improving the model and we run it at, for a regional climate model, a very high resolution of 0.05 degrees, which is around 5km by 5 km grid squares. This resolution is really important when trying to resolve narrow ablation zones, or precipitation in high relief topography, like that we find in Greenland.

The latest data from the latest simulation is here:


This is certainly nowhere near a complete download – we have many many variables that are output and these can be available in any time step from 3 hourly to daily to annual. For practical reasons, due to the immense file size! I have only put monthly and annual values here. Get in touch if you need something specific, I’m only too happy to have people workign with our data.

It is freely available for scientific purposes, but please credit our group – and in particular our funding agencies like to be acknowledged.

For reference to the actual model we have a couple of papers in the pipeline:

This latest run is an update on but similar to that presented here:

P. L. Langen, R. H. Mottram, J. H. Christensen, F. Boberg, C. B. Rodehacke, M. Stendel, D. van As, A. P. Ahlstrøm, J. Mortensen, S. Rysgaard, D. Petersen, K. H. Svendsen, G. Aðalgeirsdóttir, and J. Cappelen, 2015: Quantifying Energy and Mass Fluxes Controlling Godthåbsfjord Freshwater Input in a 5-km Simulation (1991–2012). J. Climate, 28, 3694–3713, doi: 10.1175/JCLI-D-14-00271.1.

(and summarised in this blogpost)


A paper that has just been submitted to this  Frontiers Special Issue will be online soon and I will also write a summary here.

A paper I am currently writing for the journal of low temperature science at Hokkaido University to be submitted at the end of this month