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GrantExploit — Present World Climate 1 km: New World Hexasphere
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Published: 2019-03-07 02:30:35 +0000 UTC; Views: 1406; Favourites: 18; Downloads: 8
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Description
There's a little story behind these maps: While I was reading about North Macedonia on Wikipedia immediately after it officially adopted that name on 2019-02-12, I found that its "Climate" section contained a marvelous map much more detailed than the usual crap. After finding the source (this link for the article, this link for the data, also linked to here ), I discovered that they offered the detail of Adam Peterson/Redtitan 's current extrapolated regional climate maps while covering the entire world like the 0.5°-resolution maps found here and earlier uploaded by Vincent--L as Earth's climates at the end of the 20th century and Earth's climates at the end of the 21th century , along with his derivative works. Specifically, the source offered global climate maps at 0.5° (~60 km/pixel at the equator), 0.083° (~10 km/pixel at the equator), and a jaw-dropping 0.0083° (~1 km/pixel at the equator) resolution. Obviously, I downloaded them immediately, and as they are free to use with credit, I decided to post these on DeviantArt like Vincent--L did with the earlier 0.5°-resolution maps.
As Paint.net and Paint cannot load the latter two .tif files, I converted all of them to the .png format (seriously, why does .tif even exist?). Also, as Sta.sh and DeviantArt restricts you from uploading files of more than 200 megapixels, I am instead uploading the full maps in 0.5°, 0.083°, and 0.025° (~3 km/pixel at the equator) resolution, while uploading the 1 km/pixel resolution maps in 6 "pseudo-hemispheres" or "hexaspheres", which are called from west-to-east and north-to-south: New World, Heartland, Orient, Pacific, 2 Souths, and Downunder.
Here's a key for the map. In the case of these maps, a 0 °C average temperature in the coldest month is used as the dividing line between C and D-type climates, and an 18 °C annual average temperature is used as the dividing line between B[x]h and B[x]k climates.
As always, if you have any questions or comments, please say 'em.
Important: If you wish to use the information present on this or make any derivative works, please cite:
Beck, H.E., N.E. Zimmermann, T.R. McVicar, N. Vergopolan, A. Berg, E.F. Wood: Present and future Köppen-Geiger climate classification maps at 1-km resolution, Scientific Data 5:180214, doi:10.1038/sdata.2018.214 (2018).and @-mention or message me (and better yet, inform the authors) so that I can make sure this has been done!
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Comments: 2
Mountain ranges truly play havoc with the weather.
👍: 1 ⏩: 1
Indeed.
What really surprises me about this and similar "ultra-high resolution" climate maps is how there seems to be a random, patchy distribution of "monsoonal" and "mediterranean" subarctic climates in the north, which I'm not sure is a consequence of an odd definition, limited data, faulty algorithms... or whether it's actually real. I mean, it even shows up in Eastern Siberia, which I would expect to be very reliably monsoonal, due to the Siberian Anticyclone reducing precipitation massively during the height of winter, and every weather station I've seen there has such pattern. Indeed, while North American subarctic locations tend to be a bit more even in their precipitation pattern, the stations in the northwestern interior regions (where many of the mediterranean patches in this map are) still show a pronounced summer bias in precipitation.
Going about the other map you commented on, they also show the mountainous regions of Arabia and the Sahara as being more arid than they actually seem—the eastern highlands of Yemen and the extreme southwest of Saudi Arabia support forests and rain-fed terrace agriculture, and the Omani highlands above Salalah look like this (!!!) in the monsoon season (and this in the dry season... like any savannah, many of which are classed as humid). Indeed, eastern Yemen was one of the origin places for coffee... which isn't really known as a dryland crop. I suspect this is because there are very few weather stations in the area, most of which are at low elevations or on the drier windward side of the highlands and the researcher's formulas for orographic precipitation increase can't compensate for some reason... but I seem to remember seeing a station located on the plain north of the wettest region of the Dhofar mountains getting a solid 12 inches, so I SWAG that the wettest valleys receive 26, making them probably have a borderline Aw/Cwa/BSh climate.
So, I dunno what's up with that, but I assume it's their error in some way.
I just realized that according to this map, there is a region of central Victoria Island and certain isolated sheltered valleys in Baffin Island that have a subarctic climate. I sure hope that's not an error. Better get some Dahurian larch seedlings, fly to Iqaluit, and rent a boat this summer! (/s only in the sense I can't afford it)
👍: 1 ⏩: 0