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This is the web repository of the GEM's Global Exposure Model
License: Other
Hi, I noticed a few issues with the Adm1 boundaries in the exposure model. I'm only posting the issues that I verified should be different in both the GADM administrative boundaries and OpenStreetMap admin_boundaries
. Is it possible to look into these districts and change the respective exposure?
To verify I have used the up-to-date OSM boundaries and the GADM boundaries v4.1.
Country | Area | Problem |
---|---|---|
France | Reunion / Mayotte | It's missing from the exposure model |
Ghana | Western North | It's a separate unit since 2018, before it was part of Western |
Ghana | Bono East & Ahafo | Both are separate units since 2018, before they were part of Brong-Ahafo |
Ghana | Savanna & North East | Both are separate units since 2018, before they were part of Northern |
Ghana | Oti | It's a separate unit since 2018, before it was part of Volti |
Tanzania | Songwe region | It's a separate unit since 2016, before it was part of Mbeya region |
Country | Area | Problem |
---|---|---|
France/Netherlands/separate | Saint Martin / Saint Barthélemy / SSS islands / ABC islands | With exception from Aruba, they are all missing from the exposure model |
Nicaragua | Lago Nicaragua | It's a lake, not an administrative boundary. Therefore it should not contain exposure. |
Country | Area | Problem |
---|---|---|
Kyrgyzstan | Osh City | Osh City is not part of the Osh District but a separate entity |
Kyrgyzstan | Bishkek City | Bishkek City is a separate entity |
Country | Area | Problem |
---|---|---|
North Korea | Kaesong | Split from North Hwanghae Province in 2019 |
Country | Area | Problem |
---|---|---|
Belarus | Minsk | City of Minsk is a separate entity and not part of the Region of Minsk |
Estonia | Peipsii | It's a lake, not an administrative boundary |
France | All regions | The 22 districts from <2015 have been used, instead of the 13 of nowadays (see https://en.wikipedia.org/wiki/Regions_of_France) |
Luxembourg | All regions | The 3 districts from <2015 have been used, instead of the 13 of nowadays (see https://en.wikipedia.org/wiki/Administrative_divisions_of_Luxembourg) |
Moldova | Administrative-Territorial Units from the Left Bank of the Dniester | It's missing from the exposure model |
North Macedonia | Oslomej, Vraneshtica, Zajas | Regions have been merged with Kichevo Municipality into one administrative unit in 2013 |
Country | Area | Problem |
---|---|---|
Azerbaijan | Shaki | Shaki City is not part of Shaki District but a separate entity |
Azerbaijan | Yevlakh | Yevlakh City is not part of Yevlakh District but a separate entity |
Azerbaijan | Lankaran | Lankaran City is not part of Lankaran District but a separate entity |
Lebanon | Baalbek-Hermel Governorate, Akkar Governorate | Separated from the North Governorate in 2003 |
Oman | Musandam Governorate | Entity is missing |
Oman | Al Buraymi | Separated from Ad Dhahirah in 2006 |
Oman | Al Batinah south/north | Al batinah split in 2013 |
Oman | Ash Sharqiyah south/north | Ash Sharqiyah split in 2011 |
Country | Area | Problem |
---|---|---|
Australia | Other territories | Should be subdivided into: Jervis Bay Territory; Ashmore and Cartier Islands; Coral Sea Islands; Heard Island and McDonald Islands; Norfolk Island |
Cook Islands | Nassau | Is actually part of Pukapuka |
Country | Area | Problem |
---|---|---|
Falkland Islands | All | Missing from model |
Country | Area | Problem |
---|---|---|
Bangladesh | Mymensingh Division | Separated from Dhaka Division in 2015 |
Maldives | All | Missing from the exposure model |
Country | Area | Problem |
---|---|---|
Indonesia | Kalimantan Utala (North Kalimantan) | Split from Kalimantan Timur in 2012 |
Greenland is also missing entirely
Currently, exposure models at ID1 only include the occupancy tag.
We should include the taxonomy and other relevant fields (e.g., the number of occupants at different times of the day, settlement type, number of floors, and area per floor when available).
In the Exposure_Adm1_Taxonomy.csv within the World File there are these following columns:
ADO/E: Adobe and Earth
MUR: Masonry, unreinforced
Masonry (reinforced)
Others
RC: reinforced concrete
W: wood
May I ask what the values in these columns represent?
My initial assumption was the number of buildings, but I checked the total for Ghor, Afghanistan, but the total doesn't seem to match the total building count within the region/country folder.
Some countries are missing Adm1 (for example, Palestine, Hong_Kong). In addition, round Adm1 summary numbers to avoid changes when updates are done.
I have already addressed this in #23 but there is a problem in Nicaragua, that we don't know how to deal with. There is one district in Nicaragua that is 'Lago Nicaragua'. I think this 'district' originates from the GADM boundaries, where it is (correctly) identified as water body. There is in the GADM dataset an attribute ENGTYPE_1
, which for any of the other districts in Nicaragua ia 'Department' and for this lake is 'Water body'.
If there would just be a few occupants and buildings in the region, we would just ignore it, but there are almost 26.000 occupants at night in this area. In my opinion they should be redistributed over the neighbouring regions, because having a population in a lake does not make sense.
The Exposure_Com_Afghanistan_Adm1
file is missing. As the commercial data is shown in the summary, I was wondering where the file with taxonomies is.
These are examples I am trying to find:
MCF/LWAL+CDL/H:1/COM
MCF/LWAL+CDM/H:1/COM
However, when I search the Taxonomy glossary (https://taxonomy.openquake.org/) for either CDL or CDM no results are found
What do these mean?
The following countries are missing the exposure data at Adm1 in Oceania:
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