Secular Sea Levels

[Michael Roger]

Hi Y’all and Anyone,

Do we have any objective measure of how climate change is affecting our sea water levels in Guernsey?

A distant memory lingers of a reference to ‘observation of secular tide levels’ by German troops in wartime in Alderney

Any offers?

Best wishes,

Mike Roger

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[deg...@cwgsy.net]

From a previous review of this subject we figured the best source of information was the UK Climate Projections (UKCP09), which is still the most up-to-date information presented.

Marine & coastal Sea level rise projections
http://ukclimateprojections.metoffice.gov.uk/22568

Online Marine & coastal projections 3 Changes to sea level rise
http://ukclimateprojections.metoffice.gov.uk/22638

Key Findings

Our analysis gives projections of UK coastal absolute sea level rise (not including land movement) for 2095 that range* from approximately 13–76 cm.

Taking vertical land movement into account gives slightly larger sea level rise projections relative to the land in the more southern parts of the UK where land is subsiding, and somewhat lower increases in relative sea level for the north. We have, for example, derived projected relative sea level increases for 1990–2095 of approximately 21–68 cm for London and 7–54 cm for Edinburgh (5th to 95th percentile for the medium emissions scenario).

A low probability High++ sea level range has been defined for vulnerability testing. For the UK this absolute SLR estimate is 93 cm to 1.9 m by 2100.

-----Original Message-----
From: "Michael Roger" <mikero...@hotmail.com>
Sent: Tuesday, 1 July, 2014 09:25
To: guerns...@googlegroups.com
Subject: Secular Sea Levels

Hi Y'all and Anyone,

Do we have any objective measure of how climate change is affecting our sea
water levels in Guernsey?

A distant memory lingers of a reference to 'observation of secular tide
levels' by German troops in wartime in Alderney

Any offers?

Best wishes,

Mike Roger

---

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http://www.avast.com

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[Michael Roger]

Hi Y’all and Anyone,

Do we have any objective measure of how climate change is affecting our sea water levels in Guernsey?

A distant memory lingers of a reference to ‘observation of secular tide levels’ by German troops in wartime in Alderney

Any offers?

Best wishes,

Mike Roger

---

[nick...@cwgsy.net]

Hi Mike,
A good question. I am not sure about Guernsey, but I have just come across an interesting article, 'Rising sea levels in the English Channel' which you can access by googling the title. It gives data for Jersey for the past 20 years or so, as well as a series of other ports on both sides of the Channel, including Brest, Roscoff andd Cherbourg. Guernsey would need reliable records going back at least 20 years to give a reasonable estimate of change. I would imagine sea level change here must be similar to Jersey.
Best wishes
Nick.

-----Original Message-----
From: "Michael Roger" <mikero...@hotmail.com>
Sent: Tuesday, 1 July, 2014 09:25
To: guerns...@googlegroups.com
Subject: Secular Sea Levels

Hi Y'all and Anyone,

Do we have any objective measure of how climate change is affecting our sea
water levels in Guernsey?

A distant memory lingers of a reference to 'observation of secular tide
levels' by German troops in wartime in Alderney

Any offers?

Best wishes,

Mike Roger

---

This email is free from viruses and malware because avast! Antivirus protection is active.