Tuesday, 21 August 2018

Historic climate data revisited - 5 - live polar maps

Here are the maps promised at the end of the last post c/w description in that post:

The Antarctic map posts south of 40 deg. S lat., again from Quantarctica, in order to capture as much of the southern continents as possible - the southern hemisphere is mostly ocean, and thus potentially has the most ocean data, which is why I started there with CLIWOC tall ships weather data - also shown is the ice-shelf extent, the subject of so much debate in re: to climate change.

The Arctic map posts north of 50 deg. N lat. for several reasons: it captures most of the Arctic landmass and of the N European nations exploring or trading in it; but also it limits the tremendous amount of Caribbean traffic, part of the triangular trade described in my May 2015 Geohipster Calendar description. Finally the 200 mi. Exclusive Economic Zone hints at Arctic geopolitics.

Please note that if you display Wind... by WindForceB layers, giscloud.com doesn't yet support symbology rotation, wind direction here. That will be updated when available.

You can reproduce that symbology on your desktop via the project posts on Dropbox for Antarctic and Arctic projects in both ESRI and QGIS renditions. Please do not hesitate to contact me below for further info, this is all downloadable from giscloud.com... Enjoy!

Monday, 20 August 2018

Historic climate data revisited - 4 - polar is POpuLAR

Having explored polar maps here, here and here, was it ever a delight to find one of the earliest maps in that same projection! In This Is the World's Largest and Oldest Map, Culture Trip report how David Rumsey recreated a digital copy of a 1587 map from Milan in no less than 60 pieces:

Wednesday, 8 August 2018

Comparative economics England & Wales since the Middle Ages

My latest post of the 7-part series Toward a rational View of Society on my personal Medium channel, follows my previous maps here of medieval & later drainage of the East Anglia Fens.I expanded a little on the economics in the concluding paragraph in this short presentation.

More polar 'map porn'

[I stole the second half of the title from Reddit group of same name.]

From previous blog posts here and here, let me share two more polar maps found via my favourite Facebook group Remembering the Franklin Expedition.

Thursday, 19 July 2018

Historic climate data revisited - 3 - circum-Arctic update

In my previous blog, how many layers can be combined in an arresting polar Arctic view. They show the almost zero overlap of historic and current weather and climatic data. They herald the importance of oceanic climate data going back before 1880, when any weather data get scarce.

Saturday, 28 April 2018

"Horses for courses", part II

previous post here contrasted full professional workflows for petroleum geology students, with very simple analytical tools for a businessman looking to ascertain population density. As my subsequent posts show, I have an interest in Antarctic and Arctic maps, history and climate; you can see my case against the popular web Mercator for polar regions in this map story.

Thursday, 29 March 2018

Historic climate data revisited - 2 - circum-Arctic

[Note: Follow-on class materials the last two blogposts generated are posted here.
Go also to section 5: Arctic / Antarctica GIS application, of 1000 GIS applications ]

Following on the Antarctic blogpost, I took my lessons-learned to the antipodes for these reasons:

Wednesday, 21 March 2018

Historic climate data revisited - 1 - circum-Antarctic

[Update: please see a mirror project for the Arctic in Part 2.]

With ongoing debates whether Antarctic ice in increasing or not, and its effect on climate change, we must avail ourselves of as much data as we can. If historic climate data is at hand, not only do they get scarcer going farther back, but 1880 also marks a time prior to which their reliability falls off.

So having mapped climate data off tall ships captains logs from 1750 to 1850, I wondered how far south they sailed, and how much they augmented historic climate data around the Antarctic?

Friday, 16 March 2018

"Qui peut le plus, peut le moins" or "Horses for courses"

These quips mean that, while we may have great tools for complex workflows, such as Mapping Well Data I'll present as AAPG Visiting Geoscientist in Hungary next month, sometimes it's better to pare it down to its simplest form, such as for a friend "looking to map addresses to [a French geographic subdivision]".

Friday, 2 March 2018

Development of Spatial Grids and...

The Association for Geographic Information Geocom2017 gathered at the Geographical Society in London late last October. Its Lightning Talks showcased new ideas and businesses. I was invited there to challenge attendees "to think about the development of spatial grids and the structure of spatial data models". The presentation itself and thank-you letter were followed by a short report in GIS Professional scanned here: