ANP
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Yuri Vugts
publisher Nieuwsuur
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Ronja Hijmans
publisher Nieuwsuur
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Yuri Vugts
publisher Nieuwsuur
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Ronja Hijmans
publisher Nieuwsuur
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The 3 coastal provinces of North Holland, South Holland and Zeeland are grappling with nitrogen strategies which they will have to present to Minister Christianne van der Wal. Within 10 months they ought to indicate by space how they will decrease nitrogen. But this is not possible for the coastal dunes, simply because a quarter of the nitrogen origin is unclear.
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This is owing to a big difference involving calculations and measurements. Coastal provinces are quickly demanding clarification from the RIVM, but the investigate is not anticipated to be completed until finally up coming calendar year. It is far too late for the provinces, as they have to make their programs correct now.
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Commissioner Anita Pijpelink from Zealand thinks that there can be no ambiguity in a delicate and complicated condition such as this. “That is why it is really crucial to know particularly what the nitrogen sources are, what their share is in the overall amount and who is accountable for taking the steps.”
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Doubt
A great deal extra nitrogen was measured in the dunes than anticipated centered on the calculations. For a extended time it was thought that the additional nitrogen have to arrive from the sea, in the kind of ammonia. This would imply that the supply of the emissions is larger than that of, for example, agriculture or shipping.
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Sea ammonia is claimed to be triggered by algae, amid other matters. But some scientists are questioning this principle. “It truly is a scientific discussion and that can make it complicated,” suggests a spokesperson for the RIVM. “Let us say ammonia comes from the sea. There are also experts who say: no, there is no ammonia from the sea.”
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RIVM is no for a longer period persuaded that the ammonia content from the sea is superior. That is why a analyze, which commenced previous calendar year, ought to demonstrate accurately how substantial the quota is and what other explanations there are for the distinctions amongst measurements and calculations.
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Until eventually there is clarity, the ‘marine ammonia’ category is no for a longer time in the RIVM versions. It has been changed by the momentary title ‘measurement correction’, but the measurement correction is not obvious in the calculation device made use of (AERIUS Monitor). As a end result, nitrogen percentages in other sectors have out of the blue elevated. Absolute emissions by sector have not improved.
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news hour
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Coastal provinces worry a stalemate in acquiring their place ideas for nitrogen reduction. They need to also post the ideas for the dune areas to Minister Van der Wal (Nature and Nitrogen) by 1 July 2023.
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Wonderful contribution
“The share of the measurement correction, previously ‘ammonia from the sea’, in the overall deposition in Zeeland is relatively substantial. Virtually as much as the deposition from the agricultural sector,” says Anita Pijpelink of the province of Zeeland.
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Deputy Esther Rommel in North Holland also struggles with the uncertain factor. “So if you have to make a program of motion, we want to know wherever the nitrogen comes from, due to the fact otherwise I wouldn’t know how to reduce it. Whichever it is, we won’t attribute it to other sectors.”
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“If the source of origin is unclear, it is not even probable to acquire focused actions,” states Deputy Jeannette Baljeu from South Holland. “And it is not even obvious what the upcoming sector is and with whom the provinces should make agreements on sustainability and cleanliness”.
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In a response, a spokesman for the minister claimed there is no cause to tinker with the 1 July 2023 program. “The RIVM analyze demands multi-12 months measurement results in buy to get to conclusions. We attach good significance to thorough perform of the examine. , even if it indicates a lot more time is wanted. “
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The ministry thinks that the provinces can actually get to get the job done with their strategies. “These are elaborated on the foundation of the most up-to-date (scientific) information. Some moments of calibration and analysis have previously been planned to include, if required, new know-how or figures in the current approach.”
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