At the end of the first quarter of Meteorological Year 2018/19, the two hemispheres (each represented by 5 Weather Stations) were running Mean Temperatures above Pre-Industrial that differed by only one-hundredth of a degree Centigrade. North 1.31, South 1.32; rounding to a Global figure of 1.32 above P-I.
Things are very different this year. At the end of Week 8, four of the northern stations are in the “red zone” – more than 2°C above P-I. Rome is in the orange zone – above the Paris Target but below two degrees. They combine to yield a hemisphere average of 3.7°C above P-I.
The biggest contributor to this increase in relative warmth is Koltsovo, the coldest of the five stations. (The daily mean there has crept above zero centigrade on just three of the 56 days.)
The GFS 10-day weather forecast model shows a huge cold air mass moving east from Europe across the Federation – I’m expecting a dip over the next couple of weeks but it is a long way down to 2 degrees above P-I. It may take a Grand Solar Minimum to get it there by the end of the year.
Of course, returns from the thousands of other northern stations could bring my token average of 3.7C above P-I down to a figure that won’t frighten the horses. I have no way of knowing how representative my Ten Stations are. They could even be giving a false picture. These graphs should only be taken as an indication of what may be happening to global temperatures – and viewed in the context of current climate change hysteria.
After 8 weeks then, my North is running at 2.16°C warmer than the same period last year. My South is 0.7 degrees cooler. Putting the two together gives this chart of my “mini Globe’s” weekly differences, with a slight warming trend.
The southern hemisphere was warmer than I expected last week with Buenos Aires and Rio taking two of the top three places in the Table. This took the gloss off correctly nominating Koltsovo for Week 45 top spot.
Roughly in the centre of the Russian Federation, Koltsovo might be expected to descend rapidly into sub-zero winter. Last week seemed to be the beginning – after the last burst (perhaps) of heat.
The first-day figure of almost ten degrees centigrade above P-I is the highest I can recall being recorded in my ten stations this year. A fall from a daily mean of 13.4°C on Saturday to 1.8 the following Friday is not something I’d care to experience. Having said that, Durham Tees was colder every day of Week 45 than Koltsovo’s warmest day. (Range 10.7°C on Wednesday to 12.2 on Friday.)
A warm Koltsovo has been the main reason for the northern hemisphere reversing the trendline forecast of cooling to the end of the meteorological year.
A quick look at the GFS model for this week points to Koltsovo turning warm again for several days. Three southern hemisphere stations might make it into the top four (Cape Town, Rio and Wellington. I’m putting pretend money on Washington and Buenos Aires propping up the Table at the end of Week 46.
Typhoon Hagibis was the week’s most obvious villain but the Arctic is a continuing cause for concern. For the next ten days, GFS indicates it will run between two and three degrees centigrade above what used to be considered “normal”. For weird weather-with-consequences, keep your eye on California. Let Jane Tande be your guide.
On my second visit to Weather Underground last month I found that the Mean Temperatures of my Ten Stations were now being delivered to one decimal place (in degrees Fahrenheit). Maximum and minimum daily temperatures were still presented in whole degrees. I was happy with this change but dismayed on the next visit to find the more accurate mean temperatures rounded again to whole degrees.
Not that it matters much. Converting the Fahrenheit data offers the opportunity to present the Centigrade temperatures to two decimal places. This semblance of greater accuracy makes me feel better but nobody should be fooled.
Halfway through this meteorological year and it is still not clear that there is a long term trend to the greater warming of “Climate Change” or the cooling brought on by the promised Grand Solar Minimum.
Here are two Tables for Week 26, with Durham Tees figures added, replacing the no longer available Whitby/Filey data.
After several decidedly cool weeks, warmth returned to North East England – and five of the Ten Stations were more than 2℃ above Pre-Industrial. Rome hasn’t yet shaken off its cold.
The second Table shows the Year to Date running average of daily Mean temperatures, with the stations ranged from warm to cool. Koltsovo has lost its top spot to Rio de Janeiro but there’s not much between them. Sydney and Wellington are also running neck and neck. These four stations are the only ones likely to change ranking positions over the next six months.
If you recall, my Pre-Industrial Baseline is 0.85℃ below the average of 10 years of Mean temperatures (calculated daily for each station). The “cf10yr” column saves you having to do the mental arithmetic. The “above P-I” figures are companions to the Global Warming narrative – “we must not go above two degrees C”. The “10yr” figures show how much warmer or cooler this meteorological year is than the average for 2008/9 to 2017/18. You would expect roughly half of the stations to be warmer than average. How much warmer (or cooler) may come as a surprise.
I have twinned my Ten Stations. The “warmest” northern hemisphere station is chummed with the “coolest” in the south…and so on. Over a rolling five-week cycle I will offer graphs for each set of twins, beginning with Koltsovo and Buenos Aires.
Here’s a suite of charts/graphs/histograms. See what you make of them.
I wrote yesterday that this was the warmest of my ten stations. It was actually the coldest – but I had its temperature anomaly in mind. On six days last month, the average temperature was over 10°C above the Pre-Industrial baseline. It is also the station with the greatest fluctuations of temperature from one day to the next.
Here’s a graph of Sydney data (Kingsford Smith station) for comparison.
Last month was Australia’s hottest January for over a hundred years, “and there is no relief in sight for the months ahead”.