Publication date: 30/01/2026 06:30

Chlorophyll-a Trends in OSPAR Assessment Areas: Applying and Evaluating a New Statistical Approach

Annex I

Table I. COMP4 assessment results for SNS, RHPM, MPM, SCHPM1, SCHPM2, CFR, OC, and KC comparing the agreed method, combining EO and in-situ according to the area specific confidence rating (High 50:50, Moderate 70:30, and Low 90:10), and the proposed method.

			Agreed method				Proposed method
Area	Period	TV	Chl-a (ug/L)	EQRS	Status	Confidence rating*	Chl-a (ug/L)	EQRS	Status	Confidence rating
MPM	2015-2020	8	11,1	0,34	Poor	Moderate	9,7	0,43	Moderate	Moderate
RHPM	2015-2020	6,8	7,6	0,53	Moderate	High	7,3	0,53	Moderate	Moderate
SNS	2015-2020	3,8	3,3	0,74	Good	High	3,0	0,83	High	High
SCHPM2	2015-2020	8,9	11,0	0,43	Moderate	Moderate	11,1	0,41	Moderate	Moderate
SCHPM1	2015-2020	5	12,2	0,14	Bad	Moderate	12,1	0,14	Bad	Moderate
CFR	2015-2020	2,8	3,0	0,54	Moderate	Moderate	2,0	0,91	High	High
KC	2015-2020	1,2	2,0	0,25	Poor	High	2,0	0,21	Poor	High
OC	2015-2020	1,6	2,1	0,38	Poor	High	1,9	0,46	Moderate	High
*Average in-situ confidence rating over the period 2015-2020, which determines the weighting when combining in-situ and EO data

Download CSV