sunshine hours

September 9, 2012

British Columbia cooling at -0.501C per decade for last 15 years

British Columbia, Canada (BC)  is north of Washington/Idaho/Montana.

I download monthly data from the Environment Canada (EC) websites. EC treats some stations as special and calculates anomalies against what they call Normals. As of today the Normals are calculated for 1971-2000 and I am using those special stations. This data is in anomalies in Celsius, not Fahrenheit. Here, for example, is data for all of Canada for Aug 2012 (I am just looking at BC today).

British Columbia has been cooling at -0.501C per decade for last 15 years.

Click on the graph for full size.

Another way to look at the data is to calculate 5 year means going backwards from the most recent data.

The most recent 5 year period in BC is -0.01C colder than the 1971 – 2000 Normals.

More importantly it is .79C colder than the previous 5 year period. That also puts the last 5 years colder than ~1925-1930, and colder than ~1940 and the same temperature as ~1960 and ~ 1990.

 

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6 Comments »

  1. [...] a follow on to this post on British Columbia’s temperature trend over the last 15 years here are the stations (that [...]

    Pingback by British Columbia – Temperature Trend Per Station for Last 15 years « sunshine hours — September 9, 2012 @ 1:52 PM | Reply

    • Stunning, I did not know that Canadian temperature data was available from EC.

      Are not these data already somewhat (warm-) adjusted?

      If you have a file with Canadian temperature trends from EC I would be very interested in doing more analysis, for example see if I can test if they are (Warm-) adjusted. And if useful include in “RUTI”.

      K.R., Frank Lansner / http://www.hidethedecline.eu

      Comment by Frank Lansner — September 10, 2012 @ 2:25 AM | Reply

  2. Stunning, great job, i would like to do an analysis too of these Canadian data.
    1) Do you know if these are (warm) adjusted?
    I would guess so…

    2) Do you have a file with data in general from EC / Canada?
    As you know it takes quite some time to create…

    K.R. Frank

    http://www.hidethedecline.eu

    Comment by Frank Lansner — September 10, 2012 @ 1:48 AM | Reply

  3. Stunning, I did not know that Canadian temperature data was available from EC.

    Are not these data already somewhat (warm-) adjusted?

    If you have a file with Canadian temperature trends from EC I would be very interested in doing more analysis, for example see if I can test if they are (Warm-) adjusted. And if useful include in “RUTI”.

    K.R., Frank Lansner

    Comment by Frank Lansner — September 10, 2012 @ 2:27 AM | Reply

    • Hi, Sorry I took so long to reply but your posts ended up in the SPAM folder of WordPress.

      The data is available in Monthly chunks. I use an R script.

      Here is a URL for BC May 2012. You can use All for prov. txtFormat can be xml

      ## http://climate.weatheroffice.gc.ca/prods_servs/cdn_climate_summary_report_e.html?intMonth=5&intYear=2012&prov=BC&txtFormat=text&btnSubmit=Submit
      ## Sample
      ##Environment Canada
      ##Monthly Values for May 2012
      ##Stn_Name | Lat | Long |Prov | Tm |DwTm| D | Tx |DwTx| Tn |DwTn| S | DwS|S%N| P | DwP|P%N|S_G|Pd |BS |DwBS|BS%| HDD | CDD |Stn_No
      ##
      ##CHEMAINUS |48.935 |-123.742 |BC | 12.7| 0| | 24.0| 0| 3.5| 0| 0.0| 0| | 40.4| 0| | 0| 5| | | | 166.1| 0.5|1011500
      ##LAKE COWICHAN |48.829 |-124.052 |BC | 10.4| 15| -1.5| 29.5| 11| 0.0| 10| 0.0| 11| | 50.2| 11| | 0| 10| | | | 121.9| 0.0|1012055
      ##DISCOVERY ISLAND |48.424 |-123.225 |BC | 11.0| 0| | 21.1| 0| 5.9| 0| | | | | | | | | | | | 216.9| 0.0|1012475

      Comment by sunshinehours1 — September 17, 2012 @ 12:32 PM | Reply

  4. [...] addition to BC cooling over the last 15 years, so are the following Canadian Provinces and [...]

    Pingback by Alberta, Saskatchewan, Manitoba, Northwest Territories, and Yukon cooling too « sunshine hours — September 10, 2012 @ 7:19 AM | Reply


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