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Messages - PSJ

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1
Science / Re: Global Forest Watch
« on: August 25, 2019, 11:43:08 AM »
But 2003-2010 was actually worse than now?

Higher rates of deforestation then yes, but now as the original forest cover shrinks every unit of deforestation is much more serious as it shrinks the carbon sink and we are much closer to the tipping point of where the first might not produce enough water vapour to sustain itself as a first and turn into a Savannah.


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Science / Re: Global Forest Watch
« on: August 24, 2019, 09:52:31 AM »
And this one

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Science / Re: Global Forest Watch
« on: August 24, 2019, 09:50:25 AM »
Great article in NYT about what satellite time series tell us about this year's fires in the Amazon

https://www.nytimes.com/interactive/2019/08/24/world/americas/amazon-rain-forest-fire-maps.html

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Policy and solutions / Re: Greta Thunberg's Atlantic crossing
« on: August 16, 2019, 04:13:33 PM »
Yea, that's really too bad and should have been more thought through. Let's at least hope that the impact of the stunt ends up being greater than the emissions it adds...  ::)

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Policy and solutions / Re: Greta Thunberg's Atlantic crossing
« on: August 16, 2019, 09:26:19 AM »
First AGW related tweet from the boat is about ASI

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Policy and solutions / Re: Greta Thunberg's Atlantic crossing
« on: August 15, 2019, 08:31:53 AM »
Thanks for setting up this thread. ASI and ASIF urgently needs leaders like Greta Thunberg who have inspired some many children as well as adults. Amazing that her voyage is already being covered by media like the BBC and TheGuardian.

7
Arctic sea ice / Re: Global sea ice area and extent data
« on: February 09, 2018, 11:29:07 AM »
Marking the new NSIDC global extent low, this graph is what really knocks me off my feet. Are we in new quasi-equilibrium of -3 standard deviations? How long will we be here for?


Source
https://sites.google.com/site/arctischepinguin/home/global-sea-ice


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Arctic sea ice / Re: IJIS
« on: August 03, 2017, 11:08:44 AM »
IJIS:

5th lowest measured for the date.

Looks like 4th?

9
Policy and solutions / Re: Other earth observation forums
« on: July 10, 2017, 03:12:01 PM »
Here's one platform focusing on forest monitoring: http://www.globalforestwatch.org/

It has a google discussion group, here: https://groups.google.com/forum/#!forum/globalforestwatch


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Policy and solutions / Re: Other earth observation forums
« on: July 10, 2017, 03:03:51 PM »
Thanks everybody for your contributions. For me, these "forums" also underscore the unique nature of ASIF in being driven by contributions from an open community. Maybe it's worth looking more into weather forums that focus on some of these areas?

Good one Charles: "Other Earth" observations, lol.

11
Policy and solutions / Other earth observation fora
« on: July 08, 2017, 06:47:10 PM »
Given the tremendous value of ASIF in advancing interpretation of earth observation of the Arctic and in communicating the importance of the issue, all on an open/public platform, I have for a while been wondering if similar forums exist for other components of the earth system.

Imagine, for example, if other tipping points from Lenton et al. 2008 had similar forums. ASIF obviously treats several of the cryosphere related. But what about the rest?

Use this thread to post links to relevant public discussion forums on tropical forests, such as the Amazon, oceans, such as the Pacific, or desserts and arid lands, such as the Sahara or Sahel.



 

12
Arctic sea ice / Re: The 2017 melting season
« on: March 25, 2017, 03:10:21 PM »
Does anyone know where to find HYCOM/CICE forecasts after March 21? It seems the usual page has not updated for some days.

https://www7320.nrlssc.navy.mil/hycomARC/arctic.html

13
Arctic sea ice / Re: The 2016/2017 freezing season
« on: February 09, 2017, 05:08:17 PM »
I think the ice down the side of Greenland is gone. I have not seen any there in the last six or so images.


The ice is very much there, check e.g. the daily sentinel mosaic at www.seaice.dk.

http://www.seaice.dk/latest/todays-sentinel1-n-1daymos.jpg

14
Arctic sea ice / Re: The 2016/2017 freezing season
« on: January 20, 2017, 10:32:28 AM »
JAXA updated to the 19th and were nice enough to provide these images to bring us up to date.
This is for thickness, as I left out the concentration, not being able to see much difference in it. That is probably because of dispersion. If the imagery for thickness is accurate at all, it's mind-blowing to think what a few days of stormy weather can do.
Edit: I have just got to add one more thought; OUCH!


Hi there, first post, fantastic forum, thanks everyone. Just wanted to point out that Wipneus' JAXA volume visual indicates this storm associated drop in thickness very neatly.

/Peter

From:

https://14adebb0-a-62cb3a1a-s-sites.googlegroups.com/site/arctischepinguin/home/sea-ice-extent-area/grf/jaxa-amsr2-volume.png?attachauth=ANoY7cqZD5WrSmUtintc3wzo_Qr4RTXetb5fFPPum59DRTAPbVKcz4NTbw3XXV3Ob78a8k6tmtxXJLtgB_ma_OnaN9FDpJQxaRaFM8QuyxJSerSvGg6qqsuz7CI-VylSAm2-LpT52SDtUlPF6TaepFujw4qCnnt7gVnZGeFKiaSqLy9PcxWu-X7_3hVzCEmBaZRs_jX2n8SNkKvzQ0hVLKBrVhmlHYX7myCToNMvayJHGHnbKbMIA5s_czXsDJ2pye2lhgk8_dbxWUeWl9n5Ck5ietM93UTi1Q%3D%3D&attredirects=0

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