The true measure of warmth

Maximum Temperature Anomaly [06-18] UTC on Monday, 9 May 2016
Maximum Temperature Anomaly [06-18] UTC on Monday, 9 May 2016

Yesterday, Lusa in Skye was not only the warmest place by actual temperature, it was also the warmest by anomaly – the difference between the actual maximum and the average maximum for the 9th of May – and that was a massive +13.0°C. In comparison the 27.1°C maximum on the previous day (8th) at Northolt in London was only +9.4°C above average.

There were some interesting variations around the Moray Firth yesterday as regards temperature too, the maximum at Lossiemouth was only 17.0°C but just along the coast a few miles further west the maximum was 25.2°C at Kinloss.

9 May 2016 - Maximum [06-18] anomalies
9 May 2016 – Maximum [06-18] anomalies

It’s all to do with sea breezes and whether you are exposed to one or not, in this case the gradient at Kinloss remained SE’ly, rather than E’NE as it was just along the coast beyond Burghead.

Synops for Mon, 9 May 2016 at 1500 UTC
Synops for Mon, 9 May 2016 at 1500 UTC

Sea Ice news

The following is a message from the NSIDC:

May 6, 2016

Daily sea ice extent updates resume with provisional data

NSIDC has obtained data from the DMSP F-18 satellite and is in the process of intercalibrating the F-18 data with F-17 data. Intercalibration addresses differences between the series of sensors, in order to provide a long-term, consistent sea ice record. While this work continues, we are displaying the uncalibrated F-18 data in the daily extent image. The daily time series graph shows F-17 data through March 31, and F-18 data from April 1 forward. Initial evaluation of the uncalibrated F-18 data indicates reasonable agreement with F-17, but the data should be considered provisional and quantitative comparisons with other data should not be done at this time.

Because these are provisional data, the Sea Ice Index has not been updated and continues to display only F-17 data through March 31. We expect to make the F-18 data available in Charctic soon.

For general information on the intercalibration of sensors, see the documentation for Sea Ice Concentrations from Nimbus-7 SMMR and DMSP SSM/I-SSMIS Passive Microwave Data. This documentation will be updated when the intercalibration to F-18 is complete.

Likewise the Arctic and Antarctic comparison charts that I maintain have also not been updated since March 31.

Warmest 8th of May since 1878

Warmest Central England Temperature for the 8th of May
Warmest Central England Temperature for the 8th of May

Provisionally yesterday – Sunday the 8th of May 2016 – was the warmest 8th of May in Central England since at least 1878. The maximum temperature anomaly was +10°C warmer than the 1961-1990 long-term average for that day and was a full 2°C warmer than the previous warmest that occurred in 2008. The mean temperature was the highest since at least 1772 at 18.0°C and exceeded the previous highest mean of 1867 by 1.1°C. Quite an exceptionally warm day for early May.

03772 London Heathrow - United Kingdom 24 AMSL 2 May-8 May 2016
03772 London Heathrow – United Kingdom 24 AMSL 2 May-8 May 2016

I’ve been a little busy but I’m back now…

work in progress

I did try to give up blogging for a number of weeks, but it’s proved to be impossible, so I have bitten the bullet, and invested in 12 months hosting with FVSHosting and repurchased my xmetman.com URL so that I can host my very own xmetman WordPress site.

I found that I just need an internet presence where I can express myself and display my creations on, even if no one reads the blogs that I write, it will still provide me with an outlet and a reason for all the weather and climate programs that I’ve written over the years.

There are a few advantages to owning your own blog rather than the free one from WordPress. For one thing you can embed your own JavaScript into your posts and pages, as well as installing from a much larger collection of widgets. So that’s why, at least for first few months, this site is strictly work-in-progress and a little on the experimental side. So please stick with me as I try out some of the new possibilities that are now opened to me, normal service will be restored eventually…