Comments on: Canada October 2012 – 15 Year Trends (A lot of cooling)

By: Lance

Lance — Thu, 29 Nov 2012 20:03:48 +0000

I checked EC webpage and both Queenstown and K are climate stations also, thus read to .5C too. I would believe they are better suited to show the trend better than my station, as, unfortunately, my place has become surrounded by the town over the years (1990 – about 3000 people) to present day 25,000? Thus UHI has hit my area!

By: Lance

Lance — Thu, 29 Nov 2012 19:57:17 +0000

if i get a few moments, i’ll run some sql against my database and see what numbers i come up with for the 170 months.
Don’t doubt that the decline has started, but remember, my data is only read to the nearest .5C (as required by EC), even though I have accurate thermometers!
Its just the way they wanted it.
Anyhow, will be interesting to see.

By: sunshinehours1

sunshinehours1 — Wed, 28 Nov 2012 17:47:43 +0000

If I just graph the last 15 years – Nov 1997 to Oct 2012 I get:

-.262C / Decade for the Tmean
-.463C / Decade for Tmax

By: sunshinehours1

sunshinehours1 — Wed, 28 Nov 2012 15:25:37 +0000

The three closest stations with 170 or more datapoints in the last 15 years are:

Trend in C/Decade – Station – Distance

-0.02 CALGARY INTL A 43km
-0.96 QUEENSTOWN 71km
-0.33 KANANASKIS 82km

The distances are from the [R] Imap package.

By: lance

lance — Wed, 28 Nov 2012 05:11:35 +0000

I run a climate station just south of Calgary (since 1990) for Environment Canada. I still have a warming trend, but the last few years have shown a very large decline (except this year was very warm)…http://www.lanceappleby.com/OkotoksWeather/Okotoks%20History%20Index.htm
if your interested in a short term history.

By: sunshinehours1

sunshinehours1 — Fri, 23 Nov 2012 03:44:19 +0000

I wrote a program in R to scrape the data from Environment Canada one month at a time.

Here is the latest month.

http://climate.weatheroffice.gc.ca/prods_servs/cdn_climate_summary_report_e.html?intMonth=10&intYear=2012&txtFormat=text&btnSubmit=Submit

I use the stations with values in the D column which are the “normals” – the anomaly from the 1971-2000 average.

By: Tom Harris

Tom Harris — Fri, 23 Nov 2012 02:33:49 +0000

Could you give the URL for the Enviro Canada Webpage on this, please. It is very important we circulate this far and wide!