March

March Extremes, anomaly charts and the UKMO

Unfortunately the UKMOUKMO The Meteorological Office is the United Kingdom's national weather service. It is an executive agency and trading fund of the Department for Business, Energy and Industrial Strategy, from who I download these anomaly charts for the UKUK The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland., still haven’t extended the series back beyond 1910 for precipitation or temperature, or from 2001 for sunshine, despite the fact that regional gridded data extends back to 1836 for precipitation, 1884 for temperature and 1910 for sunshine. You would think if they have the underlying gridded data, they surely must be able to generate the charts?They also have only extended the anomaly charts that use the latest 1991-2020 LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO. back to 2000, so unfortunately the charts that extend back the furthest, still only use the 1961-1990 LTA. I don’t think extending the charts back further, and using the latest LTA would be such an arduous task, maybe they could find some time to run the code on their new super-computer ?🤔

The third coldest March since 1910 occurred as recently as 2013.

It’s been quite a while since we’ve had a record dry March.

Shame the sunshine record is so short.

March, Precipitation, Sunshine, Temperature, UKMO

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March 2024 – Objective LWT

March 2024 was a mobile affair, and often quite cyclonic, with only brief anticyclonic interludes between before the arrival of the next low. MSLPMSLP Mean sea level pressure is the pressure at sea level, or, when measured at a given elevation on land, the station pressure reduced to sea level assuming an isothermal layer at the station temperature. during the month was well below the LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO., particularly in the last week.

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LWT, March

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March 2023 – Lamb Weather Types

Another month in which the weather type changed dramatically from an anticyclonic easterly, to a cyclonic westerly, in the space of a day or so around the 11th of the month. Up until then the weather had been remarkably cold and wintery across the north of Scotland, with severe overnight frosts. Further south the weather after that remained cyclonic and very wet at times.

LWT, March

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March 2023 – Global Temperature

In my DIYDIY Do It Yourself Global temperature series based on reanalysis gridded data which I maintain, I make March 2023 the second warmest in my series, which started in 1948, a little behind March in the record warm year of 2016. The odd thing is that the largest increases zonally at the moment, are coming from the northern subtropics, and not the tropics, where the double dip La NinaLa Niña La Niña is an oceanic and atmospheric phenomenon that is the colder counterpart of El Niño, as part of the broader El Niño–Southern Oscillation climate pattern. The name La Niña originates from Spanish for "the girl", by analogy to El Niño, meaning "the boy". In the past, it was also called an anti-El Niño[1] and El Viejo, meaning "the old man." has just come to an abrupt end.

Global Temperatures, March

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March 2023 – Mean temperature

The north-south temperature gradient in anomalies continued into March across the UKUK The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland.. It’s slightly ominous that +4°C anomalies are evident again across Morocco and a number of times the SSWSSW A sudden stratospheric warming (SSW) is an event in which polar stratospheric temperatures rise by as much as 50 °C in the course of a few days. The warming is preceded by a slowing then reversal of the westerly winds in the stratospheric polar vortex. SSWs occur about six times per decade in the northern hemisphere, and about once every 20-30 years in the southern hemisphere.’ly flow during the month pumped warm air across Iberia and into the south of France. This seems to have been a recurring theme in recent years and could provide the method of delivery for hot air in what could be another record breaking hot summer across central Europe.

Anomalies, March, Temperature

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March 2023 – Mean Pressure

No need to look very far for reasons why March was so wet across the south of the UKUK The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland.. Anomalies of -19 hPahPa A Hectopascal is the SI unit of pressure and identical to the Millibar in the southern mid-Atlantic and +18 hPa over Greenland pushed the omnipresent Icelandic low much further south than usual and with it the SW’ly conveyor. That kept much of the colder air north of 60° north and the very mild air south of 50° north, leaving the UK in a kind of mish mash between them.

Anomalies, March, Pressure

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