The eupolicy.social admin @admin

Recent searches

Search options

Only available when logged in.

0 posts0 participants0 posts today

**Greg Cocks** @GregCocks@techhub.social · Feb 7

Greg Cocks @GregCocks@techhub.social

Mapping Antarctica's Hidden Ice-Free Lands - A Blueprint For Conservation
--
https://phys.org/news/2025-01-antarctica-hidden-ice-free-blueprint.html <-- shared technical article
--
https://doi.org/10.1038/s41597-025-04424-y <-- shared paper / spatial dataset
--
#GIS #spatial #inventory #mapping #Antarctic #ecosystems #wilderness #biodiversity #environmental #icefree #landcover #climatechange #humanimpacts #habitat #opendata #bioregional #abiotic #spatialmodel #biogeography #raster #model #modeling #spatialdata #futureproofing

work flow diagram - Amalgamation rules for Bioregional Ecosystem Types. Decision tree for lumping candidate bioregional combinations of Habitat Complex and ACBR into the final Bioregional Ecosystem Types. At least 5% of pixels in the candidate unit in question need to be next to a pixel of another unit to be considered “adjacent”. Red arrows are followed upward if the condition is not met, and green arrows are followed downward if it is.

Graphic representation of the hierarchical classification process. Large, coloured cells (top row) represent Tier 1 Major Environmental Units (E1-E5); nested cells (middle rows) represent Tier 2, Habitat Complexes (including Distinct Overlay Ecosystems); and dark blue circles (bottom row) represent Tier 3, Bioregional Ecosystem Types. Geothermal Major Environmental Units are represented as red, orange, and pink nested cells. Penguin breeding areas are represented as a green cell nested within E1. The Lakes Major Environmental Unit (L) has one Habitat Complex (L1) represented by light blue cells. Antarctic Conservation Biogeographic Regions (ACBRs) in Tier 3 are illustrated by semi-transparent horizontal bands. Numbers and sizes of cells and circles are not to scale and are intended for illustration purposes only. Circles representing Bioregional Ecosystem Types have been placed to indicate that not all combinations exist, and existing combinations vary in size.

maps - Spatial distribution of Habitat Complexes within each Major Environmental Unit (top left to bottom right): E1 mild lowlands; E2 midland mesic environments; E3 midland dry sunny environments; E4 rugged high mountains; E5 highland windy plateaus; and G1-G3 geothermal ecosystems with L1 lake ecosystems. Dark grey pixels on each map indicate distribution of ice-free areas assigned to other Major Environmental Units.

**Greg Cocks** @GregCocks@techhub.social · Feb 5

Feb 5

Greg Cocks @GregCocks@techhub.social

'Last Ice Area' In The Arctic Could Disappear Much Sooner Than Previously Thought
--
https://phys.org/news/2025-01-ice-area-arctic-sooner-previously.html <-- shared technical article
--
https://doi.org/10.1038/s43247-025-02034-5 <-- shared paper
--
#GIS #spatial #mapping #Arctic #Canada #LastIceArea #LIA #icedependent #species #ArcticOcean #icefree #climatechange #ecology #polarbears #belugas #bowheadwhales #walruses #ringedseals #beardedseals #ivorygulls #spatialanalysis #model #modeling #spatiotemporal #Tuvaijuittuq #FirstNation #inuit #indigenous #seaice #simulations #archipelago

map - extent of the Last Ice Area (red contour) as defined by the World Wildlife Fund

charts - Observed and simulated September sea ice extent

photo - walrus huddle, Queen Elizabeth Islands, Arctic Canada

**Greg Cocks** @GregCocks@techhub.social · Dec 11, 2024

Dec 11, 2024

Greg Cocks @GregCocks@techhub.social

Striking Satellite Images Reveal Antarctica Is 10 Times Greener Than 35 Years Ago
--
https://www.sciencealert.com/striking-satellite-images-reveal-antarctica-is-10-times-greener-than-35-years-ago <-- shared technical article
--
https://doi.org/10.1038/s41561-024-01564-5 <-- shared paper
--
#GIS #spatial #mapping #remotesensing #landsat #change #Antarctic #AntarcticPeninsula #spatialanalysis #spatiotemporal #climatechange #greening #vegetation #change #warming #satellite #browning #cryosphere #anthropogenic #warming #moss #terrestrial #ecosystems #GoogleEarthEngine #NDVI #TCG #icefree #model #modeling

chart - change in the areal extent of likely vegetation cover

maps - spatial and temporal complexity in AP greening trend over the past 35 years

map & chart - Spatial complexity in the recent localized greening (and browning) trend for the southern section of King George Island and Ardley Island

photos - Moss-dominated ecosystems across the AP [Antarctic Peninsula]

Continued thread

**CelloMom On Cars** @CelloMomOnCars@mastodon.social · Dec 4, 2024

Dec 4, 2024

CelloMom On Cars @CelloMomOnCars@mastodon.social

"Jahn and Heuzé projected/estimated the first ice-free #Arctic day using output from over 300 computer simulations. They found that most models predicted that the first #IceFree day could happen within nine to 20 years after 2023 regardless of how humans alter their greenhouse gas emissions.

The earliest ice-free day in the Arctic Ocean could occur within three years, [by 2027]."

https://www.colorado.edu/today/2024/12/03/countdown-ice-free-arctic-new-research-warns-accelerated-timelines

CU Boulder TodayCountdown to an ice-free Arctic: New research warns of accelerated timelinesThe first summer on record that melts practically all of the Arctic’s sea ice, an ominous milestone for the planet, could occur as early as 2027.For the first

Drag & drop to upload

Recent searches

Search options

Administered by:

Server stats:

#icefree