Monday, 7 September 2020

Sea level rise web map, poster and pirate map

[ Update: here is a video of the action mentioned below, re: colleges divest from oil ]

An Extinction Rebellion Cambridge action, demanding colleges divest from oil investment, led to a simple yet arresting idea: map the level below 12 m. sea level rise each college would be under, if climate change we left unabated, as a means to help convince them of the consequences of climate inaction., Bristol UK

Inspired by this poster, the introduction to the action's how-to manual ends with: 

Recent news, however, suggested an accelerated ice melt in the Arctic, especially the Greenland ice sheet. Together with Antarctica, it is considered the bellwether for extreme SLR [ sea level rise ] of 6 and 15 m. That had me revise the maps with an additional 12 m. level. Note however that the timing for such a SLR is still debated, the data being so new and the models in constant re-adjustment.

But simply mapping the immersion of infrastructure wraps up in one simple meme all the maps and information written up so far and listed in this status quo post

Update: here's a final scene of central Cambridge under various sea level rise scenarios.

Web map

In a nutshell, use GIS to subtract a location's current elevation from a purported current sea level + 12 m. reflecting that new SLR. Rather than post university college locations for the action above, let's post the settlements - Civil Parishes as they're called in East Anglia - for the Cambridgeshire and Peterborough Combined Authority, the focus of the current social enterprise.

Let's step through this map, shall we? Toggle legend and contents, and turn on layers in sequence, or turn each one off before the next one for more clarity:
  1. If needed select the Home button and turn off the top three layers. That gives you the settlement infrastructure, thinning out markedly northeast toward the Fens.
  2. Click on any of the dots to pop up links to pictures and pages in Wikipedia of 270 Civil Parishes assembled by social enterprise partner Terry Jackson
  3. The next layer up helps you appreciate the extent of submergence under 12 m. SLR... about half of East Anglia considered England's bread basket!
  4. The next one shows the depth under 12 m. SLR each settlement might be: notice submergence increase northeastward but not in a uniform manner.
  5. Lastly see how population increase to the southwest and submergence to the northeast, again not in a uniform manner - this is called a bivariate display.


How can a web map - however compact and easy to use - be conveyed in hustings or town hall meetings, or village hall meetings in the Fen Edge north and east of Cambridge? Taking a page again from pre-pandemic social actions, posters have proven to be very popular to convey SLR to the public at large in parks and shopping malls. So let's repeat the same in a four-panel poster:

click to enlarge (large format A0 here)

Pirate map

Inspired by Get Kids into Survey as well as John Nelson's Tattered Map Sandwich, here is a fun way to look at this serious subject: simply post submerged areas in blue liners, and those remaining above water as grassy hummocks. Posted 'naked' at first as a simple handout to tell a story, a legend was added to explain the content, and overlain as a virtual second sheet  as per pirate lore: you get either map or directions, but only both under special circumstances... apparently the source of Argh! Pirate legends!

click to enlarge (small format A4 here)

Thursday, 3 September 2020

Coronavirus update - Part IX

[ Update: Cases keep growing, not a second wave but a concern nonetheless, reported in the news. ]

After changes in NHSx reporting posted previously, we continue with NHSx case and ONS death data for England, and to  update our CamCOVIDinfo:

Sunday, 30 August 2020

Google Earth to reconstruct a viewpoint

 And now for something completely different (apologies to Monty Python). I posted mid-2008 a view of Lake Como as a viewpoint in Google Earth, as per caption below. Three years later a post from Ogle Earth discerned historically significant locations via Google Earth. So I decided to try the same for a family quandary.

Wednesday, 19 August 2020

Coronavirus update - Part VIII

 Last update showed progress in Coronavirus (COVID-19) in the UK especially in higher geographic resolution: Ward down from County but not yet Postcode levels. In this ever-evolving scene however:

  • NHSx no longer posts death data in its legacy stream (scroll all the way to the bottom), 
  • and cases are no longer posted daily (check "Last updated" date at the very bottom)
Fortunately Office of National Statistics (ONS) death data had already been tapped as in Part III. So our dashboard below CamCOVIDinfo is still on offer... do keep coming back for weekly updates!

Thursday, 13 August 2020

Blog hits and trends

On its 11th anniversary, let's look at blog statistics and and draw some lessons from this compilation:

  • time scale in months with employment tenure below
  • number of posts by month (orange bars, scale right)
  • top 20 individual posts (red bars, scale right)
  • blog reads per month (blue line, scale left)
  • trends (dashed) with aggregators (yellow), none (blue) and tweets (green)

Tuesday, 11 August 2020

Coronavirus update - Part VII

 Since the last update, NHSx has significantly upgraded Coronavirus (COVID-19) in the UK:

  • In addition to Cases and Death, Testing and Healthcare are on offer in various subdivisions. 
  • On the downside, we still don't have Release / Recovery data, which appeared briefly mid-March under PHE tenure, then no more under NHSx. 
  • On the upside we get Middle layer Super Output Area (MSOA) or Ward-level equivalent, a vast improvement over Upper Tier Local Authority (UTLA) or County-level equivalent data. 

Monday, 20 July 2020

Cottenham Open Manifesto

Local Community Engagement 1234567891011, 12 & 13

[ Update: Item #5 has already started  at ARU Peterborough, see bottom clip ]

The previous post tallied three series - community engagement, and geo-info and pandemic maps & stats - since starting almost 18 mo. ago. Not only will Anthropocene East Anglia give a geo-historical framework for it all, it also highlights the opportunities and challenges in the future, which we proposes to address. Let's detail our proposed road map issued from all this as well as discussions with local councils, ecologists, and neighbouring village revival planners:

Saturday, 11 July 2020

Cottenham Open Status Quo

[ Update: next post entered into listing below as #13 ]

Terry Jackson and I started almost 18 mo. ago, so perhaps it's time to look at what we've prepared so far, in order to frame the Manifesto in our next post.

Friday, 10 July 2020

Coronavirus update - Part VI

[Update: on 28 July both cases and deaths appear to be flattening at last, stay tuned!
Update: NHSx cases pass the ¼M mark with uptick and without "flattening the curve"  ]

The previous post and its updates showed the progress of NHSx and ONS daily and cumulative numbers of COVID19 cases and deaths, ending with some internal consistencies in NHSx reporting. Those appear to have been remedied now.

Friday, 12 June 2020

Coronavirus update - Part V

Update 4: another week another uptick, more on health data trials&tribulations next
Update 3: the uptick smoothed... but "flatten the curve" certainly hasn't happened yet!
Update 2: and right on cue: UK coronavirus cases no longer falling, ONS figures show
Update 1: an uptick in ONS deaths reported a week behind matches last week's uptick in NHSx cases... flattening the curve? Not!  ]

Previously we reported on extending COVID-19 datasets down to Ward (MSOA) from County (UTLA) level. To recap, NHSx post cases and deaths from hospitals in a single dashboard, whereas ONS post death data across many systems with geo-socio-economics. And while we report on the highest geographic granularity publicly available, at the country level weekly reports are the common denominator across agencies. ONS posts data weekly 2-4 weeks behind depending on scale as discussed before, whereas NHSx posts daily 1-2 days behind also discussed before. Having calculated weekly data from NHSx to match ONS time stamps. they're graphed here (click images to enlarge).