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Messages - Aluminium

Pages: 1 ... 14 15 [16]
751
Arctic sea ice / Re: The 2018 melting season
« on: June 19, 2018, 07:54:01 AM »
June 14-18.

752
Arctic sea ice / Re: 2018 sea ice area and extent data
« on: June 18, 2018, 12:34:55 PM »
JAXA Extent 110,126,025 km2(June 17, 2018)
Wow. :)

753
There is no rain on the eastern shore of the Baltic sea. Saint-Petersburg is often considered pretty rainy and cloudy. The weather usually agrees. However soil is very dry today. There was only 12 mm of rain for 46 days.

754
Arctic sea ice / Re: The 2018 melting season
« on: June 17, 2018, 06:21:50 AM »
June 12-16.

755
Arctic sea ice / Re: The 2018 melting season
« on: June 15, 2018, 09:31:07 AM »
Meanwhile, impressive Siberian heat update.
Tiksi (Laptev), Pevek (ESS)
Khatanga. Right now Khatanga is the warmest place in Russia (31.7°C).

756
Arctic sea ice / Re: The 2018 melting season
« on: June 15, 2018, 08:29:24 AM »
June 10-14.

757
Arctic sea ice / Re: The 2018 melting season
« on: June 13, 2018, 09:30:32 AM »
June 8-12.

758
Arctic sea ice / Re: The 2018 melting season
« on: June 11, 2018, 07:45:29 PM »
Lena at Kusur. Average monthly discharge in June is 74000 m3/s. The highest monthly discharge was 104000 m3/s in June 1989.

759
Arctic sea ice / Re: The 2018 melting season
« on: June 11, 2018, 12:12:55 PM »
My understanding is that the water from the Lena River can contain so much sediment that it can be denser than the sea water when it enters the Arctic Basin and so sink underneath it rather than floating on the surface.

Sorry, I did a web search but can't find a reference to support this. Anyone?

Source.
Yearly average turbidity in the Lena is 43 g/m3. Maximum is 400 g/m3 in the lower reaches of the river.

Just interesting fact. The spring rise of the water level is about 28 meters in Kyusyur.

760
Arctic sea ice / Re: The 2018 melting season
« on: June 10, 2018, 02:10:55 PM »
So, one possible interpretation of these data is that the pulse of summer heat flow is coming down the Lena river, but it has not fully hit the Laptev Sea yet.  That would in turn explain why there has been so little melting yet of ice at the edge of the delta where it meets the sea ice.
Firstly, Lena brings to Laptev large amount of river ice and cold fresh water. Ice flow finished couple of days ago. Before this moment, incoming water has no chance to warm significantly.

761
Arctic sea ice / Re: The 2018 melting season
« on: June 07, 2018, 06:21:21 PM »
Another cyclone in a similar place. Winds are slightly weaker. Air above Laptev is getting even warmer.

762
Arctic sea ice / Re: The 2018 melting season
« on: June 05, 2018, 02:42:40 AM »
Forecast from earth.nullschool.net for 07.06.2018 09:00 UTC. There are winds up to 72 km/h, total precipitable water over 25 kg/m2, T850 about 10°C.

763
Arctic sea ice / Re: The 2018 melting season
« on: May 31, 2018, 12:17:16 PM »
The Lena River is certainly a big beast, with a huge maximum discharge when the snow melts. June is the big month - but apparently snow-melting is also happening in May now. Presumably large amounts (200gt ?) of fresh water entering the Laptev in just one month must impact how ice loss happens in the Laptev.   See data below and images attached.


A nice video about Lena and the nature of Yakutia. The video was shot near the Lena delta at this time of year several years ago. In this video, Lena breaks ice and the ice flow begins.

In 2018, front edge of the ice flow will reach Lena delta in 3-4 days.

764
Consequences / Re: Hurricane season 2018
« on: May 25, 2018, 07:32:32 PM »
Mekunu will likely landfall at Category 2 intensity, a first in the satellite era in southwest Oman.
According to the latest data, Mekunu reached Category 3.

765
Consequences / Re: Hurricane season 2018
« on: May 25, 2018, 09:58:49 AM »
Last information about storm Mekunu.

As of 06:00 UTC May 25, 2018:
Location: 15.7°N 54.6°E
Maximum Winds: 90 kt
Minimum Central Pressure: 960 mb

Location is 150 km SSE from Salalah and the storm is moving right to this city.

766
Arctic sea ice / Re: The 2018 melting season
« on: May 24, 2018, 11:22:11 PM »
The flat ten year extent minima curve is the result of an increasingly mobile, fragmented, porous and fragile pack sprawling outwards as it is pummeled by increasingly vigorous weather systems.
The horizontal ten-years trend has no statistically significant difference with the decreasing forty-years trend. Appearance of short horizontal trends can be explained by random fluctuations.

767
Consequences / Re: Hurricane season 2018
« on: May 24, 2018, 12:33:39 AM »
re the above .. if you like a beautiful storm in an unusual place .. check out today's worldview of the Arabian Gulf , b.c.
Storm Mekunu is really beautiful... It is getting stronger. Winds will reach about 50 m/s. Quite rare cyclone power for this place.

768
Consequences / Re: Hurricane season 2018
« on: May 23, 2018, 03:58:11 PM »
Hurricane in the Indian Ocean is going to Arabian peninsula.

As of 12:00 UTC May 23, 2018:
Location: 12.0°N 56.0°E
Maximum Winds: 65 kt
Minimum Central Pressure: 974 mb

769
Arctic sea ice / Re: The 2018 melting season
« on: May 15, 2018, 12:46:02 AM »
Longyearbyen, Svalbard weather forecast attached. Is this warm for the time of year, or just average?
In Barentsburg the weather is much warmer than average. I use this site (in Russian). The average temperature is normally below zero until the end of May.

770
Arctic sea ice / Re: 2018 sea ice area and extent data
« on: May 09, 2018, 03:30:41 PM »
Does somebody knows how much ice the Bering Sea normaly loses at this time of the year ?
10-15 thousand km2/day.

771
Arctic sea ice / Re: The 2018 melting season
« on: May 05, 2018, 03:10:43 PM »
Is there an update for this one, or an easy way to check it ?
It isn't difficult to make it. There are no significant changes compared to the last.

772
Arctic background / Re: Baltic Images
« on: April 07, 2018, 07:42:23 AM »
60°02'N 29°42'E. An ice hut near Kotlin.

773
Consequences / Re: Hurricane season 2017
« on: October 14, 2017, 08:58:42 PM »
How many hurricane-related records does that make that we broke in the last few weeks??
Perhaps we will see even more before the end of the season.
Another one. #Ophelia is now a major hurricane - the farthest east (26.6°W) an Atlantic major hurricane has existed on record.

774
Consequences / Re: Hurricane season 2017
« on: October 13, 2017, 08:44:03 PM »
Distance between maximums or minimums is about 60-70 years. Next maximum of 30 years average can be expected around 2030. I think, last value isn't a new maximum. I see an increase by 20-30% compared to 65 or 130 years ago.

775
Consequences / Re: Hurricane season 2017
« on: October 13, 2017, 01:55:16 AM »
Accumulated cyclone energy for the 2017 Atlantic hurricane season has reached 7th highest.

Ophelia is going to Ireland in four days.

776
Consequences / Re: Hurricane season 2017
« on: October 09, 2017, 09:06:16 PM »
There is very little long-term trend in hurricane activity, and this is supported by most of the data.
Maybe, it's not significant. Nevertheless, 30-years average Atlantic ACE (red line) has increased compared to the past.

777
Antarctica / Re: PIG has calved
« on: September 22, 2017, 11:37:27 PM »
Two screenshots from EOSDIS.

778
Consequences / Re: Sea Level Rise Projections and Maps
« on: September 21, 2017, 12:50:48 AM »
Hello, ASIF. :)

Few months ago I attempted to estimate acceleration of SLR. I took data from AVISO before February 2017. Simple polynomial approximation was used: at2+bt+c.

Results for 2017.0
Velocity = 0.393 cm/y. 1 sigma = 0.005 cm/y.
Acceleration = 0.0055 cm/y2. 1 sigma = 0.0004 cm/y2.

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