The Hugo-winning artist ?

Aircraft aside, what is the effect on the weather station of a 30,000 square metre x 4 metre thick slab of concrete on one side and a 50,000 square metre carpark on the other?

Concrete on the ramps and taxiways generally runs 2-3 ft ( <1 meter) thick on a base of crushed rock. I have heard of 4 meter thickness in the touchdown zones of some runways. Gonna be warming, though, holding heat into the night.

Disagreeable me, sorry.

1. CG (center of gravity) position is definitely a problem. All freight containers are weighed and known, but containers may still be loaded aboard in an incorrect order, and as I said, that makes the aircraft handle in unexpected ways, resulting in over-rotation and tailstrikes. An overweight takeoff will require more rotation, but at a normal rate and that shouldn’t get a tailstrike.

2. Airlines have temperature/pressure/gross weight takeoff charts computed for every runway they use at an airport; it’s all part of their certification for operations at an airport. Aside from the go/no-go aspect, pilots use the charts for reduced power takeoffs whenever they can, which is easier on the engines. Throttles are set for the highest temperature on a runway chart that allows safe takeoff, which produces more power than you actually need but less power than you actually have available. This leaves a good reserve of power in case of difficulty. The actual density altitude doesn’t enter in for reduced power, and for full power takeoffs, the pilots use their own ambient temperature gauge.

3. Not a clue what a donk is.
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ralph ellis (07:58:08) :
The heat behind a taxiing A320 or 737 is easily detectable at the distances involved. When an aircraft taxis into a stand opposite ours (a similar distance) you can feel the heat, which would equate (I suppose) to 50 – 60 oc.

That would be a bit over my 20 C above ambient estimate, assuming you mean actual temp and not 50 C above ambient. I don’t have my charts handy, but really hot temps as far aft as the Ciampino Stevenson screens are, would take higher power and damaging wind speeds.
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I guess I’ll hit the ‘Submit’ button, then check for typos.

2.Density altitude with temp being important 5C has given me a tight feeling in the rear

I’d be sure to see a doctor about that if I were you.

Ciampino is a weather station whose daily data are included in the ECA&D dataset and freely available:
http://eca.knmi.nl./

No doubt that the station above is Roma/Ciampino whose WMO codex is 16139.
The GHCN co-ordinates must be wrong.
Moreover, ECA&D has daily data till 2005 and I have got data till yesterday.
You can find real time daily data at the site of the Italian Air Force Met. Service.
For example, right now, at 20:00 UTC you can read Roma/Ciampino temperature extremes taken yesterday at this link:
http://www.meteoam.it/modules/tempoInAtto/infoStazione.php?icao=LIRA

Tmin was 8.4° at 01:50 and Tmax was 18.8° at 14:20.
These data are published every day at 09:00 UTC.

That page reports also today’s daytime high (published at 18:00) and nighttime low (at 06:00), that are different with respct to daily extremes.
Today’s low was 13.4°; the high was 20.0°, thanks to scirocco weather.

Before taking any climate information out from a weather station, there is no other way (at least a seriuos way) that doing that kind of work that Anthony started for the US.

Of great importance, of course, it would be also to know the station history.
Ciampino, for example, had for sure a lot of air traffic increment when was opened to civil air traffic and wide plane parking lot had to have been added.
Survey like this allows to discriminate bad or dubious stations from better ones.