Wednesday, 5 May 2021

East Anglia sea level rise infrastructure update

 Local Community Engagement 12345678910111213, 1415 & 16

 Following on the previous timelines update focusing on Cambridgeshire & Peterborough Combine Authority, this is an East Anglia-wide update based on Environment Agency (EA) Survey,  Office for National Statistics (ONS) Geoportal and Ordnance Survey (OS) Open Zoomstack data. 

Rather than end with a slide deck as  before, let's start with it for this update (ignore the blog post link that is here):

Let's spend some time now on the so-called bivariate mapping introduced above. Here is the map:

click to enlarge, full size

To the left are ONS' 2019 Index of Deprivation (IoD) mapped against Income Rank: it shows in lighter shades the more deprived areas (as noted, lower digit is higher IoD); they center around the lowlands and peat lands to the north. To the right are Sea Level Rise modelled from OS data against Risk of Flooding lifted as-is from EA data: it shows in darker shades the areas more vulnerable to flooding from rivers or from inundation; this time they center around the central subsea areas, which as noted aren't inundated today but run the highest risk in case of inundation from sea level rise. 

This quantifies the qualitative description in the Cottenham Open intro story map of peatlands shrinking during the 18th c. drainage of the Fens, thus creating a slight uphill for rivers toward the North Sea, and resulting in the drainage & pumping infrastructure dating back to that time.

Now let's look at the population and flood defense distribution. You can see the populated clusters of Peterborough, Ely and Cambridge at 10, 4 and 6 on a clock face:

click to enlarge, full size

It's hard to see the detailed flood defenses, so here's a close-up of King's Lynn, on the forefront of sea level rise inundation as it's on the North Sea coast along the Wash. Note the jaggedness at this relatively large scale reflects the 50m. resolution regional topography data from OS Open Data.

click ot enlarge, full size

Live maps will be posted for all these, so that you can explore this further by overlaying, panning and zooming all of the above... Stay tuned!

Monday, 26 April 2021

East Anglia sea level rise timelines update

 Local Community Engagement 12345678910111213, 14 & 15

[ Update 2: Cambridge could be completely underwater by 2100, warns Environment Agency report

Update 1: added slide deck at bottom, to summarize the last two years of work on this ]

After a hiatus focusing on Coronavirus and story maps on East Anglia and other mapping topics, let's revisit that moving target of sea level rise timing. 

Wednesday, 21 April 2021

Tree planting survey - Part II

[ In the news: ‘Amazing success’ as community group plants 165 trees by banks of river Cam ]

The previous Tree planting survey 1-2-3 showed what3words used to located and post on a web map rough surveyed locations for tree planting directed by a tree surgeon, to help restore tree rows along the River Cam towpath immediately north of Cambridge UK. The beauty of turning out a web map the same day as the survey, is that shortly after, printing out the same map for tree-planting volunteers to take into the field was feasible almost as quickly. So after a 'high tech' Part I, here's a 'low tech' Part II.

Sunday, 28 March 2021

Tree planting survey 1-2-3

[ Update: see next the fieldwork preparations that went on as a follow-up to this project ]

New Flamingos, my Extinction Rebellion group in Cambridge decided to do a little outreach - not unlike my other group On the Edge that engages with my village around flood preparedness - we work with the community to replant trees along the left bank of the River Cam immediately North of Cambridge UK. This afternoon, a tree surgeon accompanied our survey along the river bank and suggested tree location and density as we walked.

Sunday, 7 February 2021

Adventures in AR (augmented reality)

[ Update 2: see Mars in 3D web view here for the latest imagery from NASA / USGS

Update 1: see "Explore Mars with GIS", the app and the story HT @PhilipMielke ]

And now for something completely different... Lockdown gave me plenty of time to be armchair explorer, and my latest story map Mars revisited open with: 

As NASA's Perseverance Mars Rover prepares to land on the Red Planet, let's extend what started on #30DayMapCallenge Day 24 bonus images displaying tantalising pictures of what looked like solifluction and rock glaciers.

Sunday, 10 January 2021

Poster catalogue

[ Update 2: Anaglyph 3D pops up Central Cambridge halfway down under Other Areas

Update 1: added four effects to enhance relief maps on mountain areas at the bottom ]

Last month's Story-in-a-map reminded me I created a number of map posters, as a mean to reach out to the community, where prints are better in town hall or small group presentations, as well as wall art.

Sunday, 27 December 2020

Coronavirus update - Part XII

[ Update: NHSx cases and ONS deaths continue to show signs of easing up as vaccinations go on ]

Since our previous update, a third national lockdown resulted from the numbers that just keep increasing, as well as a second strain of the virus appearing but not split out in NHSx stats. That is patent in the comparative graphs below, updated as per above:

Friday, 18 December 2020

Digital Nomads and Digital Divide

 Here is the Parliament   f i n a l l y    addressing the challenges posed by the pandemic, with a fairly comprehensive review of the facts they gathered.

Sunday, 13 December 2020


[ Update: see Update #7 in this story map on how to address topo inversion (#6 is this) ]

 While I have written a few story maps, the #30DayMapChallenge last month has taught me to tell a story in a single map. The amazingly detailed DEFRA digital terrain model has already been used here (go to Update 1) in the Cambridge area of East Anglia. So here is a synoptic view of South Cambridgeshire, with its story in the box. 

Thursday, 19 November 2020

Coronavirus update - Part XI

[ Update 1: Still no sign of the second wave abating and deaths on the increase again
  Update 2 : next installment shows how the second wave numbers just keep growing ]

Further to our last blogpost, the second lockdown resulted from / is reflected in both sharp increases in cases passing 1.5M, and marked ones in deaths passing 70,000 and on the increase again