Tag: BC

I live near Nanaimo BC (data from 1947 at “NANAIMO A”). I was curious what the temperature range for any given day would be.

By temperature range I mean find the warmest it has ever been for a particular day and then subtract the coldest it has ever been.

December 1st , February 4th, November 14th and May 16 have the biggest range = 32.8C.

November 18th has the lowest range = 16.9C. (I find it interesting it has never been colder than -4.4C on November 18 when it has been -16.1C on November 14th.

(Remember this when someone says humans and animals will notice a 1C change in the next 100 years).

Top 10 and bottom 10 below.

Biggest Difference:

Month	Day	Min	Max	Difference
12	1	-18.9	13.9	32.8
2	4	-16.7	16.1	32.8
11	14	-16.1	16.7	32.8
5	16	-4.4	28.4	32.8
6	17	0.6	33.3	32.7
5	29	1.7	34.3	32.6
5	12	0	32.4	32.4
5	28	0.6	33	32.4
5	14	-0.6	31.7	32.3
12	24	-13.9	18.2	32.1

Lowest Difference:

Month	Day	Min	Max	Diffference
11	18	-4.1	12.8	16.9
3	15	-3.3	14.5	17.8
12	5	-7.1	12.1	19.2
11	10	-4.4	14.9	19.3
12	11	-6.1	13.5	19.6
12	3	-5.9	14	19.9
12	12	-6.3	13.9	20.2
2	23	-5.6	14.6	20.2
3	14	-3.9	16.6	20.5
3	17	-5	15.7	20.7

Every once in a while I visit the data for the weather station closest to my hometown on the west coast of Canada.

Today I am looking at daily TMAX data  from Nanaimo Airport (1947 – 2015).

1987 was the warmest year (1958 was 2nd warmest FYI) . 1955 was the coldest They are shown as the orange and blue lines.

Here I have graphed all the available data in the style I usually use for Sea Ice data.

2015 is in red. There are gaps because Environment Canada doesn’t seem to care.

Notice that temps can fluctuate by 20C for the same day in different years.

Ponder this … why can we humans (and crops and animals)  adapt to 20C swings but we can’t adapt to a 1C change over 100 years?

Click graph for larger.

Update: I added Tmin

Every once in a while I visit the data for the weather station closest to my hometown on the west coast of Canada.

Today I am looking at daily data (using KNMI) from Departure Bay (1913 – 1992) and Nanaimo Airport (1947 – 2014).

I’ve summarized the data by monthly mean.

The data does overlap. The first graph is just Tmax. The second graph is Tmax anomaly from the overlap period of 1948 to 1992

 

 

 

Update: From 1948 added at bottom

Every once in a while I visit the data for the weather station closest to my hometown on the west coast of Canada. The data only starts in the late 1940s so there is no extreme’s from the 1930s and 1940s.

The three graphs below have the Tmin and Tmax data from the Environment Canada monthly reports up to the end of 2014.

The three start in 2010, 1998 and 1980. What does the data tell you?

If you start in 2010 … we are going to bake to death.

If you start in 1998 … we are slowly cooling.

If you start in 1980 the Tmin is climbing and the Tmax is dropping. UHI probably.