Daily Specific Humidity
Welsh Government
Specific humidity is a measure of the amount of moisture in the air per unit weight of dry air. Shifting patterns of specific humidity, as projected by the Met Office Hadley Centre climate models, can influence indoor air quality conditions, with consequential impacts to occupant health. To help illustrate these patterns, the average annual specific humidity (g H2O / kg dry air) is mapped for the average year in the time period for the 50th and 95th percentile models out of the 12-model suite. Time periods are baseline (1980-2000), 2030 (2021-2040), and 2070 (2061-2080). County-level results represent an area-weighted-average of the results for each climate data grid within the county.
Additional information is available here: Wales Housing Climate Analysis Additional Information
Accompanying maps in this series can be found here:
Climate Projections consisting of Daily Maximum Temperature, Annual Precipitation, Daily Relative Humidity and Daily Specific Humidity
Indoor Conditions results consisting of Indoor Air Quality and Overheating
Building Fabric degradation results consisting of Solar Insolation, Precipitation and Relative Humidity
Case Studies for four representative towns and cities illustrate results at a resolution of 2.2 km, giving insight into the variation that is projected geographically across each area:
Aberystwyth consisting of Climate, Indoor and Fabric
Cardiff consisting of Climate, Indoor and Fabric
Swansea consisting of Climate, Indoor and Fabric
Wrexham consisting of Climate, Indoor and Fabric
For a better understanding of the impact of summertime overheating on houses that have been highly insulated and suggestions on approaches to tackling them go to: Considering summertime overheating in highly insulated homes: factsheet | GOV.WALES
For a better understanding of the impact of summertime overheating on post 1985 properties (including older buildings converted into flats) and suggestions on approaches to tackling them go to: Considering summertime overheating in post 1985 properties (including older buildings converted into flats): factsheet | GOV.WALES
For a better understanding of the impact of summertime relative humidity in older properties and suggestions on approaches to tackling them go to: Considering summertime relative humidity in older properties: factsheet | GOV.WALES
For a better understanding of the maintenance, repair and adaptation priorities of older, traditional properties under a changing climate, go to: Considering repair, maintenance and adaptation priorities for older properties: factsheet | GOV.WALES
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Spatial data (6)
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2070 (2061-2080) - Delta from 95th Percentile Baseline (g H₂O / kg Air)
No abstract provided
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2030 (2021-2040) - Delta from 50th Percentile Baseline (g H₂O / kg Air)
No abstract provided
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Baseline (1980-2000) - 50th Percentile (g H₂O / kg Air)
No abstract provided
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2070 (2061-2080) - Delta from 50th Percentile Baseline (g H₂O / kg Air)
No abstract provided
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Baseline (1980-2000) - 95th Percentile (g H₂O / kg Air)
No abstract provided
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2030 (2021-2040) - Delta from 95th Percentile Baseline (g H₂O / kg Air)
No abstract provided
Maps using this data (0)
Or display data on an existing map
- Type:
- Spatial data
- Publication date:
- 27 March 2024
- Licence:
- Open Government Licence for Public Sector Information (OGL)
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Copyright:
- Point of contact:
- data@gov.wales
- Language
- English