Diurnal temperature range

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Diurnal temperature range

Postby greg_gruner » 2015 Apr 06, 16:38

The cloud finally cleared last night from Farnborough and it remained mostly clear through today.
As a result, we had a diurnal temperature range of 17.6C, from a minimum of 0.3C at 0630 (with ground frost) to a maximum of 17.9C at 1430.
Not that unusual for this time of year, but still impressive. The maximum temperature was the highest since October 31st.
Greg Gruner
Farnborough, Hampshire
greg_gruner
 
Posts: 224
Joined: 2012 Feb 04, 17:28

Re: Diurnal temperature range

Postby Richard Hunt » 2015 Apr 06, 20:34

Sunny at dawn, then thick fog off the sea from around 0700 to 0900 UTC reduced visibility to 300m. Fog then lifted to leave a sunny dry and cool day.


It felt mild, even warm in the sun, but I only recorded a screen maximum of 9.1c.

Tmin was 3.8c.

Grass minimum dropped to 0.0c.

Trace amounts in the gauge due to dewfall.
COL Station: 25020.

Watson W-8681 AWS. Standard Stevenson Screen. Maximum and Minimum screen thermometers. Grass minimum thermometer.
5" Copper standard rain gauge. Roof mounted annemometer.
Richard Hunt
 
Posts: 374
Joined: 2012 Jan 27, 19:23
Location: Hornsea, East Yorkshire. 10m AMSL

Re: Diurnal temperature range

Postby greg_gruner » 2015 Apr 07, 15:00

It seems to depend very much on the location at the moment, with sea temperature being still cold.

I had a min of 1.4C and a max of 19.4C today, so an even wider diurnal range of 18.0C.
Greg Gruner
Farnborough, Hampshire
greg_gruner
 
Posts: 224
Joined: 2012 Feb 04, 17:28

Re: Diurnal temperature range

Postby Len Wood » 2015 Apr 07, 22:42

Sea is definitely still chilly at around 9 or 10C.
That means we have only had maxes of 15C in the last two days, and that is when the sea breeze weakens in late afternoon.
Beautifully sunny though.

Diurnal range has been about 10CdegC.
Len

Wembury, SW Devon coast
N50.33 W4.13
Altitude 83 m asl
Len Wood
 
Posts: 349
Joined: 2012 Jan 28, 16:12
Location: Wembury, coastal SW Devon, 83 m asl

Re: Diurnal temperature range

Postby Nick Gardner » 2015 Apr 08, 18:47

On Monday the minimum temperature was a rather chilly 0.2°C but the day soon warmed and without a sea breeze that day, the temperature topped out at 21.0°C.

So an unusually large (for here) diurnal range of 20.8°C.

Sea breezes yesterday and today meant the maximum temperatures were no where near as high.
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: Diurnal temperature range

Postby Richard Hunt » 2015 Apr 09, 19:30

No great diurnal variation here, the best been an 11c range from 2.8c to 14.3c on day 7.
COL Station: 25020.

Watson W-8681 AWS. Standard Stevenson Screen. Maximum and Minimum screen thermometers. Grass minimum thermometer.
5" Copper standard rain gauge. Roof mounted annemometer.
Richard Hunt
 
Posts: 374
Joined: 2012 Jan 27, 19:23
Location: Hornsea, East Yorkshire. 10m AMSL


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