Calculation of nutrient input ceilings

How have nutrient input ceilings been calculated?

Nutrient input ceilings are readily calculated by subtracting the reduction requirements (CART) in the 2013 Ministerial Declaration from the net nutrient inputs of each country and basin in the reference period 1997-2003.

Following the same procedure, nutrient input ceilings can also be assigned to shipping and other sources of airborne inputs. 

The sum of all nutrient input ceilings for a basin will be equal to MAI to that basin (Tables 4a and b).

The necessary information for this calculation was included in the background document for the 2013 Ministerial Meeting. However, detailed information was not provided for calculating the nutrient input ceiling for the basin and nutrient combinations which do not have a reduction requirement. For phosphorus, the nutrient input ceiling in these basins is simply equal to the net inputs in the reference period, but for airborne nitrogen inputs reductions due to implementation of Gothenburg protocol and regulations on shipping emissions were taking into account in the 2013 Ministerial Declaration (see Background document) also for the basins without nitrogen reduction requirements. Thus, in order to meet the requirement that achieving the nutrient input ceiling should result in MAI for these basin, the nutrient input ceiling will be slightly larger than reference inputs for the HELCOM Contracting Parties.


Table 4a: Nutrient input ceilings for nitrogen for all basins and countries.

CountryBOBBOSBAPGUFGURDSKAT
Denmark23190479103343813031329319
Estonia95317141311265130291820
Finland35081296191569206532556477
Germany
81731702747313121465219573285
Latvia632736091183538982425
Lithuania1104913309326157955460
Poland64428021608571166136111251106
Russia71015519253625222516174174
Sweden179243335030942502449622434206
Other countries
18766603330023455280458805579
Baltic Sea Shipping722921434147112165149
Belarus0073220635200
Czech Rep.
0026930000
Ukraine0019480000
Sum (MAI)5762279372325000101800884186599874001


Table 4b: Nutrient input ceilings​ for phosphorus for all basins and countries

CountryBOBBOSBAPGUFGURDSKAT
Denmark0021001040829
Estonia00823623900
Finland166812550322000
Germany
00101003510
Latvia0074054100
Lithuania00831016600
Poland0043090000
Russia00277289218500
Sweden826112530800105740
Atm. Dep.181394104615093105118
Belarus00244079700
Czech Rep.
001080000
Ukraine00330000
Sum (MAI)2675277373603600202016011687