This dataset contains results on HELCOM Assessment unit level 4b for dissolved inorganic nitrogen.

The information provided represents the data and results from the HELCOM HOLAS 3 indicator evaluation for eutrophication, covering the data period from 2016-2021. Data reported from national monitoring programmes to the HELCOM COMBINE database (hosted by ICES) is utilized for open sea assessment units. Open sea data extraction is carried out by ICES for in-situ (bottle) data creating the underlying assessment dataset [link ]. Coastal assessment units (WFD water types or water bodies) are assessed based on WFD result data reported by countries.

Indicator analysis of both open sea and coastal areas is carried out using the HEAT assessment tool ( https://github.com/ices-tools-prod/HEAT).

This analysis provide the basis of the HELCOM indicator evaluations and are utilized in the HOLAS 3 thematic assessment of eutrophication.

Attribute description:

ES = Eutrophication Status

ES_SD = Standard Deviation

ES_N = Number of Observations

ES_N_Min = Minimum Number of Observations any given year

ES_SE = Standards Error

ES_CI = Confidence Interval

ET = Eutrophication Target / Threshold

ER = Eutrophication Ratio

ACDEV = Acceptable Deviation

BEST = ET / (1 + ACDEV / 100)

EQR = Ecological Quality Ratio

EQR_HG = Ecological Quality Ratio High/Good Boundary

EQR_GM = Ecological Quality Ratio Good/Moderate Boundary

EQR_MP = Ecological Quality Ratio Moderate/Poor Boundary

EQR_PB = Ecological Quality Ratio Poor/Bad Boundary

EQRS = Ecological Quality Ratio Scaled

GTC = General Temporal Confidence

STC = Specific Temporal Confindence

TTC = Total Temporal Confidence

GSC = General Spatial Confidence

SSC = Specific Spatial Confidence

TSC = Total Spatial Confidence

TC = Total Confidence