[Bldg-sim] Mapping ASHRAE and Koppen Climate zones

Joe Huang yjhuang at whiteboxtechnologies.com
Wed Apr 29 18:24:23 PDT 2020

About 10 years ago I needed to get the Koeppen Climate Classification for thousands of 
international locations  in order to run a solar model (Zhang-Huang 2003) where we've 
grouped locations by Koeppen CC.

In order to do that, I found a digital map of the entire world at a half-degree grid with 
the Koeppen CC for each grid, and then wrote a script to read the map file and then return 
the Koeppen CC for any location based on its lat/lon. It worked well enough for my needs 
that after I've added the Koeppen CC to the station information, e.g., lat, lon, elev, 
time-zone, etc., I haven't had a need to return to the map since.

Some words of caution about the Koeppen CC.  Since they're based on a number of climate 
statistics, the Koeppen CC will change for some locations near the boundaries (just like 
ASHRAE Climate Zones!:-)).  I'm not in favor of such shifting climate zones and decided to 
use what somebody has compiled than embark on my own calculations.

I can share more information about what I did if there's interest.


Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
yjhuang at whiteboxtechnologies.com
http://weather.whiteboxtechnologies.com for simulation-ready weather data
(o) (925)388-0265
(c) (510)928-2683
"building energy simulations at your fingertips"

On 4/29/2020 3:37 PM, Andrew Corney via Bldg-sim wrote:
> Thanks David.
> This is really helpful but not quite what we needed. Really appreciate you and others 
> taking the time to reply.
> We decided to bite the bullet and just parse it out - looking for an easy win but I 
> don’t think it exists here!!
> Thanks again!
> -- 
> Andrew Corney • PE
> Product Director
> Sefaira
> M +44 7887 059 722
> Complete this survey <http://goo.gl/forms/ZonzQutvxaL8lnTh2> to find out more about what 
> your peers are doing during early stage design.
> This email was sent from Sefaira UK Ltd.
>> On 29 Apr 2020, at 18:15, David Eldridge <DEldridge at grummanbutkus.com> wrote:
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