Habitat: Montane Habitats
Grid Reference: NX543787
Grid Easting: 254500 to the 1km mid point (metres)
Grid Northing: 578500 to the 1km mid point (metres)
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Pollutant: Ammonia
Critical Level:
1.0 - 3 µg m-3
Concentration: 0.95 µg m-3
Data Year: 2018 - 2020
Exceedance: [-0.05] to [-2.05] µg m-3
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Pollutant: N Deposition
Critical Load Range:
Arctic, alpine and subalpine scrub habitats: 5 - 15 Kg N/ha/year
Moss and lichen dominated mountain summits: 5 - 10 Kg N/ha/year
For applying the best indicative critical load values for use in impact assessments please visit the following page.
Deposition: 21 Kg N/ha/year
Data Year: 2018 - 2020
Exceedance Ranges:
Arctic, alpine and subalpine scrub habitats [16] to [6] Kg N/ha/year
Moss and lichen dominated mountain summits [16] to [11] Kg N/ha/year
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Pollutant: Nitrogen Oxides
Critical Level: 30 µg NOx (as NO2) m-3
Concentration: 3.01 µg NOx (as NO2) m-3
Data Year: 2018 - 2020
Exceedance: -26.99 µg NOx (as NO2) m-3
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Pollutant: Ozone
Critical Level: 5000 ppb hours (based on(Semi-)natural vegetation communities dominated by perennials, 6 month growing season mid April- mid October)
Exposure: 668.67 ppb hours
Data Year: 2007 - 2012
Exceedance: -4331.33 ppb hours
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Pollutant: Sulphur Dioxide
Critical Level: 20 µg m-3
Concentration: 0.27 µg m-3
Data Year: 2018 - 2020
Exceedance: -19.73 µg m-3
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Pollutant: Acid Deposition
Critical Load Class & Values:
Class: Montane
CLmaxS: 0.57 CLminN: 0.321 CLmaxN: 0.891 (keq/ha/yr)
Deposition: 1.61 (N: 1.5 | S: 0.21) (keq/ha/yr)
Data Year: 2018 - 2020
Exceedance: