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Author Topic: Baltic Images  (Read 22137 times)

nanning

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Re: Baltic Images
« Reply #50 on: January 15, 2020, 04:29:17 PM »
(Jääkartta from the pdf linked by blueice. reads like Jakarta)
I thought it was on Balti but now I see it is on Jäava.
It's a bit farfetched I agree. Sorry, probably not a good joke. And I hadn't even smoked a joint... crickets... curtain
"It is preoccupation with possessions, more than anything else, that prevents us from living freely and nobly" - Bertrand Russell
"It is preoccupation with what other people from your groups think of you, that prevents you from living freely and nobly" - Nanning
Why do you keep accumulating stuff?

Niall Dollard

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Re: Baltic Images
« Reply #51 on: January 15, 2020, 10:55:17 PM »
(Jääkartta from the pdf linked by blueice. reads like Jakarta)
I thought it was on Balti but now I see it is on Jäava.

What have you started Nanning ?   :)

Okay. One last one.

Why do Swedish naval ships have barcodes on the sides ?



So they can Scandinavian.  :D

blumenkraft

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Re: Baltic Images
« Reply #52 on: January 16, 2020, 07:03:32 AM »
Who is Dinavian?

nanning

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Re: Baltic Images
« Reply #53 on: January 16, 2020, 10:06:40 AM »
I guess it's "Thy Navy"
"It is preoccupation with possessions, more than anything else, that prevents us from living freely and nobly" - Bertrand Russell
"It is preoccupation with what other people from your groups think of you, that prevents you from living freely and nobly" - Nanning
Why do you keep accumulating stuff?

Niall Dollard

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Re: Baltic Images
« Reply #54 on: January 16, 2020, 09:54:44 PM »

Niall Dollard

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Re: Baltic Images
« Reply #55 on: January 16, 2020, 10:06:49 PM »
But back to the Baltic.

Per SMHI, anomalies from the 1961-1990 mean are running at +10 C for the first 16 days of the year over much of northern Sweden

sesyf

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Re: Baltic Images
« Reply #56 on: January 19, 2020, 05:42:47 PM »


Current ice in Baltic vs the average.

Pmt111500

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Re: Baltic Images
« Reply #57 on: January 30, 2020, 05:29:50 AM »
Finnish snows as of yesterday (in centimeters, multiply by 4/10ths  to get inches): quite a lot in Lapland, almost normals (still abit below I think) in the middle, southwest and south, not so much normal. I think I've not seen temperatures below -9 C yet in my place (clear night NnW winds @ 0400 AM)
« Last Edit: January 30, 2020, 10:09:13 AM by Pmt111500 »

gerontocrat

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Re: Baltic Images
« Reply #58 on: February 12, 2020, 07:24:17 PM »
A different source for Baltic Sea Ice

http://baltice.org/weather/
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Niall Dollard

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Re: Baltic Images
« Reply #59 on: February 29, 2020, 05:12:43 PM »
No measurable snow at Helsinki for both January and February 2020.

(chart courtesy Mika Ratanen)

Pmt111500

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Re: Baltic Images
« Reply #60 on: March 07, 2020, 05:52:13 PM »
No measurable snow at Helsinki for both January and February 2020.
Can confirm the silght downwards trend with huge variation from early 1980s onwards.

Pmt111500

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Re: Baltic Images
« Reply #61 on: March 21, 2020, 07:52:39 AM »
"Long shadows of spring", a friend on their cottage in southwestern Finland.

We've had 6 episodes of minimal snow here this winter, possibly this is the last one. Friend and wife though have to come back to city to take care of their elderlies, so total isolation here is not possible.

be cause

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Re: Baltic Images
« Reply #62 on: March 27, 2020, 09:45:03 PM »
winter's on it's way .. keep warm .. :) .. b.c.
2007 + 5 = 2012 + 4 = 2016 + 3 = 2019 + 2 = 2021 + 1 =  ' if only we could have seen it coming ' ...

Niall Dollard

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Re: Baltic Images
« Reply #63 on: October 22, 2020, 11:50:13 PM »
Sea Surface Temperatures are currently about 2 C above the 1971-2000 normal across practically all the Baltic Sea.

(Temperatures in the ovals are the 1971-2000 means)

https://cdn.fmi.fi/marine-observations/products/ice-charts/latest-black-and-white-ice-chart.pdf

Niall Dollard

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Re: Baltic Images
« Reply #64 on: November 23, 2020, 07:48:22 PM »
Sea surface temperatures are still running between 2 and 3 C above normal over much of the Baltic Sea.

Recent chart for 231120 shows a tiny bit of new ice has formed at the very top of the Gulf of Bothnia.

But further south the Gulf of Finland is very warm.

wili

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Re: Baltic Images
« Reply #65 on: December 02, 2020, 10:07:28 PM »
A bit north of the baltic, and sorry, it's from fb, but pretty dramatic picture of northern lights

https://www.facebook.com/photo/?fbid=2795056350733881&set=a.1546148808957981
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Niall Dollard

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Re: Baltic Images
« Reply #66 on: March 01, 2021, 09:50:54 PM »
The Baltic took its time freezing up this year but in recent weeks both the Gulf of Finland and Gulf of Bothnia were starting to freeze up - something which hardly happened at all last year.

However in recent days the record warm air across much of Europe has spread north and taken its toll on the ice in the Gulf of Bothnia. (Finland top right/Sweden lower left)

GIF needs a click


gerontocrat

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Re: Baltic Images
« Reply #67 on: March 16, 2021, 02:02:17 PM »
Having downloaded the Wipneus data files I find that there is Baltic Sea sea uce area and extent data. So here are the graphs.

What I find interesting is that from the 1980's to the 1990's there is a collapse of winter ice. But after that decadal averages are pretty stable although yearly variations are high. Also the period of zero ice does not seem to lengthen.

Now could that apply to the 14 seas of the Arctic that we look at all the time?

click images to enlarge

« Last Edit: March 16, 2021, 03:18:57 PM by gerontocrat »
"Para a Causa do Povo a Luta Continua!"
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blu_ice

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Re: Baltic Images
« Reply #68 on: March 17, 2021, 09:32:29 AM »
Thanks Gero, interesting graphs.

Baltic Sea is very different from the Arctic Ocean but the lesson to be learnt here is that change isn't always linear.

My take on the graph is that since the 1990's the Baltic Proper on average no longer froze in winter.  Gulf of Bothnia, Gulf of Finland and the northern and eastern coastal areas still froze because they are less saline, shallower and located further north.

Past two winters Sea of Bothnia and large parts of Gulf of Finland and Gulf of Riga remained ice free. If this becomes a trend we can expect 2020's average to deviate from the winter average from 1990's to 2010's.

hst_319

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Re: Baltic Images
« Reply #69 on: March 19, 2021, 11:12:37 AM »
After many years of reading i finally feel i can contribute!

Swedish met. office published a really interesting article about the refreeze in the gulf of Bothnia a month ago. It included measurements from research ship Svea that showed an increasing build up of heat. Bad weather also seem to have the effect that the heat gets stirred up, slowing the refreeze.

The time of measurement was 7th of dec. 2020.

IMO this means less ice and more snow for the Swedish north coast. The big question is if this translates to the arctic seas.

Full article in swedish only: https://www.smhi.se/nyhetsarkiv/blasvadret-rensade-bottenviken-fran-is-1.168510

oren

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Re: Baltic Images
« Reply #70 on: March 21, 2021, 12:09:47 AM »
Welcome, hst. The first post is the hardest... I am sure you will have more to contribute.

kassy

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Re: Baltic Images
« Reply #71 on: March 21, 2021, 07:08:08 PM »
Google translate does an excellent job. Caption of graphic below:

The blue dots show the temperature on 7 December 2020 at given depths from the surface to the bottom at measuring point RR5 located in the Gulf of Bothnia midway between Skellefteå and Brahestad. The gray line shows the mean value for 2001-2015 and the light gray field indicates the standard deviation.
Þetta minnismerki er til vitnis um að við vitum hvað er að gerast og hvað þarf að gera. Aðeins þú veist hvort við gerðum eitthvað.

gerontocrat

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Re: Baltic Images
« Reply #72 on: April 03, 2021, 03:31:17 PM »
Baltic sea ice from NSIDC data analysed by Wipneus,

If anything, 2020 amd 2021 pointing to earlier melt.
"Para a Causa do Povo a Luta Continua!"
"And that's all I'm going to say about that". Forrest Gump
"Damn, I wanted to see what happened next" (Epitaph)

interstitial

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Re: Baltic Images
« Reply #73 on: April 04, 2021, 01:29:39 AM »
Baltic sea ice from NSIDC data analysed by Wipneus,

If anything, 2020 amd 2021 pointing to earlier melt.
With masking affects evident up to 0.02 km^2 of area and 0.03 km^2 of extent commenting on more than near the peak is not evidence based. With the higher noise level in a single years data then a decade average comparing them is tenuous at best.  I am always looking for trends that may not be evident yet. Considering the data I do not believe one can conclude more than area and extent in the 1980's were significantly higher than the following decades.

Having said all that the trend is probably there its just the evidence is not. I feel somewhat hypocritical writing this post as I have spent significant effort trying to say renewable growth is or is about to dramatically increase with even less evidence.