#astronomy August 2021 Climate in Armagh – Astronotes

September 13, 2021 - Comment

DULLEST AUGUST AT ARMAGH FOR 13 YEARS, WARMER AND SLIGHTLY WETTER THAN AVERAGE.  WARMEST SUMMER AT ARMAGH FOR 15 YEARS, DRIEST FOR EIGHT YEARS AND SLIGHTLY DULLER THAN AVERAGE Armagh Observatory experiences that August 2021 was the dullest August at Armagh for 13 years.  Though hotter and barely wetter than common, it was additionally the


DULLEST AUGUST AT ARMAGH FOR 13 YEARS, WARMER AND SLIGHTLY WETTER THAN AVERAGE.  WARMEST SUMMER AT ARMAGH FOR 15 YEARS, DRIEST FOR EIGHT YEARS AND SLIGHTLY DULLER THAN AVERAGE

Armagh Observatory experiences that August 2021 was the dullest August at Armagh for 13 years.  Though hotter and barely wetter than common, it was additionally the driest August at Armagh for 3 years. Taking the three months June, July, and August collectively, the meteorological summer season was the warmest at Armagh for 15 years, the driest for eight years and barely duller than common.

With 100.7 hours of recorded sturdy sunshine this August was the dullest at Armagh for 13 years, that’s, for the reason that exceptionally uninteresting August 2008 (69.Zero hours of sturdy sunshine). That is roughly 76% of the 140-year long-term (1881-2020) common variety of hours of sturdy sunshine at Armagh (132.7 hours) and almost 72% of the newest (1991-2020) 30-year common (140.6 hours).

The sunniest days have been 11.5 hours on the 28th, 11.four hours on the 25th and 9.eight hours on the 24th.  Solely 4 different days recorded greater than 6 hours of sturdy sunshine.

The imply month-to-month temperature was almost 15.9 levels Celsius (60.6 Fahrenheit), nearly 1.three C hotter than the 225-year long-term (1796-2020) common August temperature at Armagh (14.63 C) and Zero.four C hotter than the newest (1991-2020) 30-year August common (15.48 C).

Common August temperatures at Armagh have elevated markedly over the past 30 years or so.  For instance, the (1981-2010) 30-year common was 15.38 C and the (1961-1990) 30-year common was 14.82 C.

The warmest day (highest most air temperature) was 25.four C on the 25th, adopted by 24.2 C on the 24th and 23.three C on the 4th.  The coldest day (lowest most air temperature) was 16.1 C on the 16th, adopted by 16.four C on the 17th.

The warmest night time (highest minimal air temperature) was 14.7 C on the 11th adopted by 14.2 C on the eighth.  The coldest night time (lowest minimal air temperature) was 6.7 C on the 2nd, adopted by eight.four C on the 28th.  There was just one floor frost this month, which was -Zero.three C on the 2nd.

The observer reported an unusually giant flight of roughly 50 feeding swallows above the climate station on the morning of the 15th, and on the 18th two ravens harrying a buzzard.

Whole August precipitation was 90.00 mm (three.54 inches) together with six hint values, that’s, 89.7 mm if hint values are ignored.  That is 9.three% greater than the 183-year long-term (1838-2020) common August precipitation at Armagh (82.35 mm) and 14.5% greater than the newest (1991-2020) 30-year August common (78.62 mm). Owing to a really moist spell between the fifth and the seventh, this August was barely wetter than common, nevertheless it was nonetheless the driest August at Armagh for 3 years, that’s, since August 2018 (78.85 mm).

The wettest day was 20.6 mm (Zero.81 inches) on the sixth.  This was preceded by 19.7 mm on the fifth and adopted by 15.1 mm on the seventh. These three days supplied almost 62% of the entire month’s precipitation.  The one different day with vital rainfall was the 21st, with 11.three mm. Thunder was heard throughout the early afternoon of the ninth.

Aside from a number of days starting on the fifth of August, the month was dominated by excessive atmospheric stress.  This culminated on the 31st in what was an exceptionally excessive atmospheric stress for August, roughly 1035 mbar (decreased to imply sea stage).  This was equal or near a number of different almost equal excessive August atmospheric pressures within the Observatory’s calibrated 170-year document of day by day stress readings extending again to 1850.

The three months June, July, and August collectively comprise the meteorological summer season.  This summer season was the warmest at Armagh for 15 years, the driest for eight years and barely duller than common.

The imply summer season temperature was 16.19 C, which is roughly 1.87 C hotter than the 225-year long-term (1796-2020) common summer season temperature at Armagh (14.32 C) and roughly 1.10 C hotter than the newest (1991-2020) 30-year summer season common (15.10 C).  This was the warmest summer season at Armagh for 15 years, that’s, since summer season 2006 (16.30C), and solely barely cooler than the summer season of 1983 (imply temperature 16.23 C).  In spherical figures the warmest summers at Armagh are actually 1995 (16.5 C); 2006 (16.three C); 1983, 2021, 2018, 1826 and 2013 (all roughly 16.2 C); 1976 (16.1 C); and 1846 (16.Zero C).

Whole summer season precipitation was 157.85 mm (6.21 inches) together with 11 hint values, that’s, 157.30 mm if hint values are ignored.  That is solely 72% of the 183-year long-term (1838-2020) common summer season precipitation at Armagh (219.44 mm) and 75% of the newest (1991-2020) 30-year common (210.55 mm).  This was the driest summer season at Armagh for eight years, that’s, since summer season 2013 (146.25 mm).

There have been 413.Zero hours of sturdy sunshine throughout summer season 2021, which is roughly 97% of the 140-year long-term (1881-2020) summer season common (427.Zero hours) and 98% of the newest (1991-2020) 30-year common (420.Zero hours).  Summer time 2021 was a lot sunnier than the very uninteresting summer season of 2020 (294.1 hours), however barely much less sunny than the summers of 2019 (435.2 hours) and 2018 (478.2 hours).

 

FOR FURTHER INFORMATION PLEASE CONTACT: Mark Bailey on the Armagh

Observatory, Faculty Hill, Armagh, BT61 9DG.  Tel.: 028-3752-2928; FAX:

028-3752-7174; mark.bailey@armagh.ac.uk; URL:

http://local weather.armagh.ac.uk/.

 

These information seek advice from observations at Armagh Observatory, which has

been recording the climate at Armagh since 1795.

 



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