Have we done the incipient mini ice age?

[pjclarke]

Where's the May 15 peak gone?

<Sigh> Different dataset. UAH (University of Alabama Huntsville) is a satellite record that attempts to reconstruct the temperature of the lower troposphere from measurements of microwave brightness (using a model btw), the NASA dataset is constructed from ground based thermometers and sea surface temperatures. Over the long term the two datasets have a similar trend, but they do not always agree on a month by month basis, the troposphere tends to respond more strongly to ENSO, for example.

As the surface based data currently represents the strongest warming, the pseudosceptics at the moment prefer the satellites, calling the surface record 'fiddled' or 'adjusted' and the satellite data pristine. This may change if we get a strong El Nino. And it ain't so - the satellite record is stitched together from several different satellites and so must be adjusted for differences in calibration, the platforms suffer from orbital drift, another adjustment, basically a guess, they do not cover the poles, where warming is strongest, they are not accurate looking sideways over high ground, etc etc.

This is not to say that the satellites are 'wrong' and the ground data 'right'. Two agencies (UAH and RSS) analyse the satellite data using different assumptions and adjustments and are in good agreement, but the NASA and UAH datasets are measuring different physical quantities, and after all, the surface is where people live. BTW Dr Carl Mears, head of RSS, says the surface datasets are 'more reliable'.

Troposphere temperatures are also measured by weather balloon-based radiosondes, here's a fascinating discussion:

https://tamino.wordpress.com/2015/06...e-for-a-pause/

[DimPrawn]

There's so match patching, adjusting, smoothing, interpolating and modelling no wonder the warmists can show any type of climate anomaly they like.

It's basically junk science. Garbage in, garbage out as they say.

[pjclarke]

There's so match patching, adjusting, smoothing, interpolating and modelling no wonder the warmists can show any type of climate anomaly they like.

It's basically junk science. Garbage in, garbage out as they say.

Whatever. I guess the Arctic is just melting on a whim.

[EternalOptimist]

Arctic ice in july is the highest its been since 2005


arctic ice is up
Antarctic ice is up
polar bears are up

[pjclarke]

Arctic ice in july is the highest its been since 2005

Usual standard of accuracy.

[pjclarke]

and relevance

[EternalOptimist]

wrong again pj

[pjclarke]

wrong again pj

Obsolete graph. The current one shows ice extent 1 sd below climatology. Not exactly compelling evidence for non-melt.

Ocean and Ice Services | Danmarks Meteorologiske Institut

[DodgyAgent]

Here is another one: Lily Kember: Shame on the journos who smeared Plane Stupid activists as 'posh'. Climate change doesn't care what class you are | Comment is free | The Guardian

We have less than seven years to change our future. The Arctic ice is melting at an alarming rate and once that's gone, the world will start to warm beyond our control. We are on track for a +6C future, which will lead to the extinction of thousands of species and millions of people from all races, classes and walks of life. Things are going to get very, very nasty – and for the whole human race, not just a bunch of poor people in a far-off land which we wouldn't be able to find on a map.

That was in 2008. It is now 2015 - another typical alarmist boLLoc*s

[pjclarke]

Here is another one: Lily Kember: Shame on the journos who smeared Plane Stupid activists as 'posh'. Climate change doesn't care what class you are | Comment is free | The Guardian

We have less than seven years to change our future. The Arctic ice is melting at an alarming rate and once that's gone, the world will start to warm beyond our control. We are on track for a +6C future, which will lead to the extinction of thousands of species and millions of people from all races, classes and walks of life. Things are going to get very, very nasty – and for the whole human race, not just a bunch of poor people in a far-off land which we wouldn't be able to find on a map.

That was in 2008. It is now 2015 - another typical alarmist boLLoc*s

For completeness, this where the 'seven years to change our future' link leads to ... Too late? Why scientists say we should expect the worst of global warming | Environment | The Guardian

Its about targets, and long term effects, not imminent flaming purgatory.