On Thu, 1 Feb 2024 16:41:08 +0000, The Natural Philosopher
<t...@invalid.invalid> wrote:
>On 01/02/2024 16:10, John Larkin wrote:
>> On Thu, 1 Feb 2024 10:45:38 +0000, The Natural Philosopher
>> <t...@invalid.invalid> wrote:
>>> I don't think it is deliberate. Who wants to travel a hundred and fifty
>>> miles into a wilderness to read a thermometer? And even with digital
>>> thermometers there needs to be electric power.
>>>
>>> And in airports, what is needed for aircraft is the air temperature
>>> there, at or near ground level, because that affects landing and takeoff
>>> speeds.
>>>
>>> What is slightly mire worrying is the way they record 'daily averages'
>>>
>>> In the days of mercury or alcohol thermometers you read the maximum and
>>> minimum temperatures recorded by the sliding steel bars, added them
>>> together, and halved them.
>>>
>>> Not very precise, or average, but the best you could do.
>>>
>>> However digital thermometers respond much faster than mercury does, so
>>> it's possible to record a very brief maximum caused by e.g. a car or jet
>>> exhaust, by a climate activist shining a mirror on the weather
>>> station...or holding a lighter underneath it...
>>>
>>> And of course nearly all land weather stations have seen encroachment by
>>> urbanisation since 1950.
>>>
>>> What about the sea? Well that too is a tad suspect. It generally now
>>> measures from the intakes of cooling water into the ships engines. But
>>> ships tend to stick to shipping lanes, because they represent the
>>> shortest distances between choke points and popular destinations. and
>>> are pouring out hot water into the seas in those lanes.
>>>
>>> The best measurements are satellite, but they don't record earth
>>> temperatures, but the radiation over an area that may come from clouds
>>> high up, weather balloons, and buoys that duck down into the deep water,
>>> and record temperatures on the way up.
>>>
>>> In short, the actual data on which all these models are based, is not
>>> nearly as solid as people are told it is.
>>>
>>> And all the fuss is about an alleged rise of less than 0.5°C...
>>
>> From the link above
>>
>> "NOAA’s climate monitoring stations found that the Earth’s average
>> land and ocean surface temperature in 2023 was 1.35 degrees Celsius
>> above the pre-industrial average."
>>
>> so people are panicking by a possible 0.15c increase above that, which
>> will somehow suddenly become a planetary-scale extinction event.
>>
>>
>>>
>>> Which is so far well within the range of 'natural' variation...
>>>
>>> In the little ice age ...'mean annual temperatures across the Northern
>>> Hemisphere declined by 0.6 °C (1.1 °F) relative to the average
>>> temperature between 1000 and 2000 CE.'...
>>>
>>> Not saying man made climate change isn't happening - it would be hard to
>>> justify saying that human activity has no effect whatsoever - but there
>>> is no smoking gun and no gunshot residue either.
>>>
>>> It could as easily be 99% natural. Or systematic errors in measurement.
>>>
>>> The real indicators would be places like the US and Canadian prairies to
>>> see whether they were getting earlier harvests consistently. Or whether
>>> the Siberian tundra were in fact becoming available for agriculture.
>>
>> CO2 is fertilizing plants, and we are always breeding better stuff, so
>> crop yields aren't a good indicator of temperature.
>>
>Crops tend not to grow in winter. Crops growing earlier is a fairly
>reliable indicator of rising temperatures.
Still doesn't assist in determining the cause, though. I think if it's
happening at all, 'carbon' from mankind's activities is a seriously
half-baked hypothesis.