Arctic Sea Ice : Forum

Cryosphere => Arctic background => Topic started by: gerontocrat on February 22, 2018, 09:38:06 PM

Title: Arctic Background Data Library
Post by: gerontocrat on February 22, 2018, 09:38:06 PM
With considerable trepidation, I start a new topic.

A lot of stuff we post is of long-term interest that should be kept, but gets lost into history as the seasons change and so do the threads, I don't know about you, but my PC is cluttered up and old, I am losing stuff already. So I suggest we need a place to put it, or at least the links. The ASI graphs are already safely locked away but accessible.

I found a site today that many of you probably know

It is the sort of data that is of long-term interest. An example is the 925hPa temperature history from 1958 to 2017, I had never come across before, which no doubt Zachary will keep going (automated already?)

If you use it, please note the title "Arctic Background Data Library" - i.e. for data, not opinion. no "near human extinction" diatribes).

A brief description of the data and the link to it (external or internal within ASIF) might be all that is necessary. I will be posting a few tomorrow.

End of message
Title: Re: Arctic Background Data Library
Post by: gerontocrat on March 15, 2019, 10:27:44 AM
Here is a report from the UN on the Arctic looking at just about everything. Available as pdf or e-book. Loads of really nice (though sometimes somewhat alarming) graphics.
Title: Re: Arctic Background Data Library
Post by: J Cartmill on April 06, 2019, 03:10:15 PM
Watched this short video by Jason Box (
summarizing the data from the paper "Key Indicators of Arctic Climate Change: 1971-2017"

In the video he mentioned this site: Arctic Monitoring and Assessment program. (
Title: Re: Arctic Background Data Library
Post by: gerontocrat on April 10, 2019, 01:15:46 PM
An informative paper on inflows and outflows in Baffin Bay
Baffin Bay sea ice inflow and outflow: 1978–1979 to 2016–2017
Baffin Bay serves as a huge reservoir of sea ice which would provide the solid freshwater sources to the seas downstream. By employing satellite-derived sea ice motion and concentration fields, we obtain a nearly 40-year-long record (1978–1979 to 2016–2017) of the sea ice area flux through key fluxgates of Baffin Bay. Based on the estimates, the Baffin Bay sea ice area budget in terms of inflow and outflow are quantified and possible causes for its interannual variations and trends are analyzed. On average, the annual (September–August) inflows through the northern gate and Lancaster Sound are on the order of 205.8(±74.7)×103 km2 and 55.2(±17.8)×103 km2. In particular, a comparison with published results seems to suggest that about 75 %–85 % of the inflow through the northern gates is newly formed ice produced in the recurring North Water Polynya (NOW), in addition to the inflow via Nares Strait and Jones Sound. Meanwhile, the mean outflow via the southern gate approaches 394.3(±110.2)×103 km2. The distinct interannual variability for ice area flux through the northern gate and southern gate is partly explained by wind forcing associated with cross-gate sea level pressure difference, with correlations of 0.62 and 0.68, respectively. Also, significant increasing trends are found for the annual sea ice area flux through the three gates, amounting to 38.9×103, 82.2×103, and 7.5×103 km2 decade−1 for the northern gate, southern gate, and Lancaster Sound. These trends are chiefly related to the increasing ice motion, which is associated with thinner ice owing to the warmer climate (i.e., higher surface air temperature and shortened freezing period) and increased air and water drag coefficients over the past decades.