Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski and John Hammond.

On Monday, 13 June 2016 20:15:11 UTC+1, Alastair wrote:
Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski and John Hammond.

A what's driving the weather feature?

Ant chance of getting some glowballsers so we can finally find out some facts
Or not as the case may be.

In message ,
Alastair writes
Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski
and John Hammond.

It's a repeat IIRC. I think it was first shown on BBC 2. Worth watching
if you haven't seen it.
--
John Hall
"Banking was conceived in iniquity and born in sin"
attributed to Sir Josiah Stamp,
a former director of the Bank of England

On 13/06/2016 21:02, John Hall wrote:
In message ,
Alastair writes
Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski
and John Hammond.

It's a repeat IIRC. I think it was first shown on BBC 2. Worth watching
if you haven't seen it.

If only for Helen Czerski...


--

Paul Hyett, Cheltenham

On Monday, 13 June 2016 21:04:34 UTC+1, John Hall wrote:
In message ,
Alastair writes
Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski
and John Hammond.

It's a repeat IIRC. I think it was first shown on BBC 2. Worth watching
if you haven't seen it.
--
John Hall
"Banking was conceived in iniquity and born in sin"
attributed to Sir Josiah Stamp,
a former director of the Bank of England

Yes, I thought it was a repeat as I watched it, but I still learnt from it second time round. I must have dozed off first time!

Hurricanes, Jet Streams, El Nino, QBO, SSW and Arctic sea ice all get mentioned.

Cheers, Alastair.

On 14/06/2016 08:46, Alastair wrote:
On Monday, 13 June 2016 21:04:34 UTC+1, John Hall wrote:
In message ,
Alastair writes
Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski
and John Hammond.

It's a repeat IIRC. I think it was first shown on BBC 2. Worth watching
if you haven't seen it.
--
John Hall
"Banking was conceived in iniquity and born in sin"
attributed to Sir Josiah Stamp,
a former director of the Bank of England

Yes, I thought it was a repeat as I watched it, but I still learnt from it second time round. I must have dozed off first time!

Hurricanes, Jet Streams, El Nino, QBO, SSW and Arctic sea ice all get mentioned.

Cheers, Alastair.


Not quite arctic ice, but at least no politics in this thread.
Something I learnt at a recent open day at the National Oceanography
Centre , Southampton, courtesy of one of their profs.
I'll give the answer tomorrow, allowing for a few answers here first.
A sort of thought experiment. If sufficient ice melted off , only,
Greenland to raise the average sea-level around the world by 1 metre,
how much of a rise around Greenland itself?

"N_Cook" wrote:

A sort of thought experiment. If sufficient ice melted off , only,
Greenland to raise the average sea-level around the world by 1 metre, how
much of a rise around Greenland itself?

It would fall by quite a bit around Greenland because of the reduced
gravitational pull of all that now-absent ice.

On Tuesday, June 14, 2016 at 4:17:02 PM UTC+1, Togless wrote:
"N_Cook" wrote:

A sort of thought experiment. If sufficient ice melted off , only,
Greenland to raise the average sea-level around the world by 1 metre, how
much of a rise around Greenland itself?

It would fall by quite a bit around Greenland because of the reduced
gravitational pull of all that now-absent ice.

Yes, sea level would certainly fall around Greenland. I think the correct term is isostatic readjustment.

A real life example is Scandinavia, which rose so much after the melting of ice, the old moorings for boats are now way up the cliff.

From Wikipedia "
In several other Nordic ports, like Tornio and Pori (formerly at Ulvila), the harbour has had to be relocated several times. Place names in the coastal regions also illustrate the rising land: there are inland places named 'island', 'skerry', 'rock', 'point' and 'sound'."

Graham
Penzance

On Tuesday, 14 June 2016 16:17:02 UTC+1, Togless wrote:
"N_Cook" wrote:

A sort of thought experiment. If sufficient ice melted off , only,
Greenland to raise the average sea-level around the world by 1 metre, how
much of a rise around Greenland itself?

It would fall by quite a bit around Greenland because of the reduced
gravitational pull of all that now-absent ice.

I don't think gravity would have much effect at all. In any case Greenland would rise because of the reduced ice burden which would nullify any reduced gravitation.

Tudor Hughes

On Monday, 13 June 2016 20:15:11 UTC+1, Alastair wrote:
Horizon program on BBC 4 tonight at nine o'clock with Dr Helen Czerski and John Hammond.

I often wonder whether programmes like this should have a more neutral title like "Is there anything wrong with our weather?" rather than setting out to be sensationalist - but I guess that doesn't buy viewers.

Richard