Rhaglen Monitro Afonydd OSPAR
Cytundeb a arwyddwyd gan nifer o wledydd Ewropeaidd (gan gynnwys y Deyrnas Unedig) yw Cynhadledd Gwarchod Amgylchedd Forwrol Gogledd-Ddwyrain yr Iwerydd a elwir yn Gynhadledd OSPAR 1998 ("Oslo Convention 1972 & Paris Convention 1974") er mwyn gwarchod ansawdd Gogledd-Ddwyrain yr Iwerydd. Amcan y Gynhadledd OSPAR yw cymryd pob cam posib i atal a dileu llygredd rhag mynd i mewn i'r môr. Mae'r Gynhadledd OSPAR yn darparu dulliau safonol o amcangyfrif mewnbwn llygryddion penodol i'r môr gan ddefnyddio amserlen samplu benodol a chyfrifiad mewnbwn safonol. Mae'r prif afonydd i gyd yn cael eu samplu'n fisol (12 gwaith y flwyddyn) i fyny'r afon o'u cyfyngiadau llanw. Ar gyfer yr afonydd hynny sy'n cario'r llwythau difwyno trymaf gall y samplu gynyddu o'r isafswm o 12. Mae'r prif elifiannau masnach a'r elifiannau carthffosiaeth i aberoedd neu ddyfroedd arfordirol hefyd yn cael eu samplu yn fisol i asesu dadlwythiadau uniongyrchol i ddyfroedd morwrol. Pwrpas y rhaglenni hyn yw asesu lefel y difwyno sy'n y môr (y 'llwyth') ac i ddilyn gwelliant yn lleihad y llwyth hwn.
Cydnabyddiaeth
Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl.
Darllenwch y drwydded i ddeall amodau defnyddio'r data.
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Dull adnabod
- Dynodydd
- NRW_DS116309
- Teitl Amgen
-
- AfA023 OSPAR
- Laith Metadata
- English
- Datganiad
-
The substances controlled under OSPAR are: Mercury, Cadmium, Copper, Zinc, Lead, polychlorinated biphenyls (PCB), gamma-HCH (Hexachlorocyclohexane), Orthophosphate, Phosphorous (total), Nitrate, Nitrogen (total) and suspended particulate material.
The load of contamination to the sea is measured at over 300 sites around the coast of England and Wales. These sites have been grouped into thirty two coastal zones.
OSPAR data is updated annually approximately 6 months through the year for the previous year. Data held ranges from 1998 to the present. It’s high/low based on twelve annual samples.
This product provides a pair of annual estimates for each sampling point, known as high load, and low load. The difference between the high and low load estimates is owing to the way in which the samples with results at the 'limit of detection' are treated. The limit of detection is the lowest concentration of a substance that can be reliably measured - any real concentration lower than this level, including zero, is reported as being present at 'less than' the limit of detection concentration. Where the substance has been analysed for but the concentration is below the limit of detection, a calculation can be made assuming that it is not present at all (a low load estimate). Alternatively, a calculation can be made by assuming that the substance is present exactly at the limit of detection (a high load estimate). The low load calculation gives an optimistic estimate of the real load, whereas the high load calculation gives a pessimistic estimate. The real load discharged will be somewhere between these two figures.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2022-11-01
Ystod amser
- Dyddiad cychwyn
- 1998-01-01
- Dyddiad gorffen
- 2022-09-30
- Categori pwnc
-
- Environment
Rhychwant
Rhychwant
- Hyd
- Wales (WLS)
))
Maint Fertigol
- Maint allweddair MEDIN
-
water column
Dosbarthiad
Dosbarthiad
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Database
(
Unknown
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- Math
-
MS Access database
-
Database
(
Unknown
)
- Lleolwr Adnoddau
- Download Data ( WWW:LINK-1.0-http--link )
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
The substances controlled under OSPAR are: Mercury, Cadmium, Copper, Zinc, Lead, polychlorinated biphenyls (PCB), gamma-HCH (Hexachlorocyclohexane), Orthophosphate, Phosphorous (total), Nitrate, Nitrogen (total) and suspended particulate material.
The load of contamination to the sea is measured at over 300 sites around the coast of England and Wales. These sites have been grouped into thirty two coastal zones.
OSPAR data is updated annually approximately 6 months through the year for the previous year. Data held ranges from 1998 to the present. It’s high/low based on twelve annual samples.
This product provides a pair of annual estimates for each sampling point, known as high load, and low load. The difference between the high and low load estimates is owing to the way in which the samples with results at the 'limit of detection' are treated. The limit of detection is the lowest concentration of a substance that can be reliably measured - any real concentration lower than this level, including zero, is reported as being present at 'less than' the limit of detection concentration. Where the substance has been analysed for but the concentration is below the limit of detection, a calculation can be made assuming that it is not present at all (a low load estimate). Alternatively, a calculation can be made by assuming that the substance is present exactly at the limit of detection (a high load estimate). The low load calculation gives an optimistic estimate of the real load, whereas the high load calculation gives a pessimistic estimate. The real load discharged will be somewhere between these two figures.
Allweddeiriau
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Allweddair
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NRW Thesaurus
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- OSPAR
- pollutants
- water quality monitoring
- Math
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
Allweddair
-
SeaDataNet Parameter Discovery Vocabulary
-
- Contaminant fluxes between the terrestrial and marine environment
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-19
Allweddair
-
IPSV Subjects List
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- Water quality
- Math
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2020-11-18
Allweddair
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NRW SMNR Keywords
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- Management Areas (SMNR)
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- Natural Resources (Incl. Features and Processes) (SMNR)
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Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2024-06-26
System Cyfeirio Gofodol
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© CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and NRW's copyright. It is the recipient's responsibility to ensure the data is fit for the intended purpose.
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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.
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Metadata
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- 4f4c4942-4343-5764-6473-313136333039 XML
- Laith Metadata
- English
- Math o adnodd
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- 2024-12-10T15:53:00.363Z
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1.0