liggende over eller omkring en nutidig 100 års hændelse

English translation: around the current level of a hundred-year event or above

00:20 May 7, 2013
Danish to English translations [PRO]
Tech/Engineering - Environment & Ecology / Hydrology
Danish term or phrase: liggende over eller omkring en nutidig 100 års hændelse
Thís comes in a reference to the freak rain-storm that hit Greater Copenhagen on 2 July 2011: "Skybruddet er blevet betegnet som liggende over", etc. Doesn't this mean, more or less, "The cloudburst has been described as lying over or around a present-day 100-year event"? Yet the meaning is far from clear to me - unlike the rest of this document from the Danish Emergency Management Agency, which is generally plain and lucid. If the sense is "The cloudburst has been described as the kind of event that happens only once in 100 years or more", the phrasing seems singularly tortuous and clumsy (and what would be the point of "nutidig"?). I hope for enlightenment.
Timothy Strauss
Local time: 15:39
English translation:around the current level of a hundred-year event or above
Explanation:
It is estimated that the total precipitation was around the current level of a hundred-year event or above it.

A hundred-year event in this case is the highest level of precipitation in a hundred years. The next-highest in that period is classified as a 50-year event.

As statistics only go back to 1955, it is uncertain how severe earlier events were, and whether this is truly a 100-year event. (I remember hearing at the time that if a similar event had occurred over farm land instead of over Copenhagen, the crops would have been ruined and farmers could claim compensation, but the water would have drained off and it would presumably not have been considered a major disaster, as the damage would have been far more limited.)

There is an explanation here http://www.ofwat.gov.uk/sustainability/climatechange/rpt_com...

The ´nutidig´ or current aspect of the sentence means that these events are expected to become more frequent in some parts of the world, due to climate change, so they may become 20 or 30-year events or even more frequent.

There is also archaeological evidence that major storm surges and the like have been more or less frequent in different areas in the past, and come in clusters over a comparatively short period, so there might have been five or six events of the magnitude of a ´current´ 100-year event within a single century.

http://www.klimatilpasning.dk/kommuner/klimatilpasningsplane...
(Scroll a good way down, to a heading
Nutidig og fremtidig styrke af ekstremhændelser)
...
Når det nutidige niveau for de forskellige gentagelsesperioder er kendt, kan man på forskellig vis fremskrive data til 2050.
Nedbøren ganges med en klimafaktor.

http://brs.dk/beredskab/Documents/Redegørelse om skybruddet ...

Sorry about the long explanation, but I hope it helps!
Selected response from:

Christine Andersen
Denmark
Local time: 16:39
Grading comment
Many thanks, Christine
4 KudoZ points were awarded for this answer



Summary of answers provided
5 +1present 100-year event
Eva Harbo Andersen (X)
3around the current level of a hundred-year event or above
Christine Andersen


  

Answers


7 hrs   confidence: Answerer confidence 5/5 peer agreement (net): +1
present 100-year event


Explanation:
http://staff.acecrc.org.au/~johunter/ipwea_nat_conf_2008.pdf
WAYS OF ESTIMATING CHANGES IN SEA-LEVEL EXTREMES
UNDER CONDITIONS OF RISING SEA LEVEL - here and on several other sites you will find "present 100-year event"

See the explanation in Danish:
http://www.klimatilpasning.dk/kommuner/klimatilpasningsplane...
For hver oversvømmelsestype estimeres den nuværende styrke, som hændelsen statistisk har, for forskellige gentagelsesperioder. En gentagelsesperiode angiver den periode, der statistisk er mellem hændelser af en vis styrke. Hvis man har 100 målinger fra hvert af de 100 seneste år, vil den største af disse være 100-års hændelsen, den næststørste hændelse vil være 50 års-hændelsen (den viser den styrke, der opnås eller overskrides to gange inden for de 100 målinger), den trejdestørste 33-års hændelsen og så videre. (100 hændelser/rang placering).
Eksempel: Det er en god idé ikke kun at se på én gentagelsesperiode, men i stedet at belyse flere forskellige hændelser. Man kan eventuelt lave analysen for 5-, 10-, 20-, 50- og 100-års hændelser, så kortene svarer til de kort, som kan rekvireres fra vandselskaberne. Sandsynligheden for oversvømmelse er 1/T, hvor T=gentagelsesperioden. Sandsynligheden for en 100-års hændelse er altså 0,01.


    https://www.countyofsb.org/uploadedFiles/pwd/Water/HomeownersGuide_Final.pdf
Eva Harbo Andersen (X)
Denmark
Local time: 16:39
Native speaker of: Native in DanishDanish
PRO pts in category: 11

Peer comments on this answer (and responses from the answerer)
agree  Christine Andersen
37 mins
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8 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
around the current level of a hundred-year event or above


Explanation:
It is estimated that the total precipitation was around the current level of a hundred-year event or above it.

A hundred-year event in this case is the highest level of precipitation in a hundred years. The next-highest in that period is classified as a 50-year event.

As statistics only go back to 1955, it is uncertain how severe earlier events were, and whether this is truly a 100-year event. (I remember hearing at the time that if a similar event had occurred over farm land instead of over Copenhagen, the crops would have been ruined and farmers could claim compensation, but the water would have drained off and it would presumably not have been considered a major disaster, as the damage would have been far more limited.)

There is an explanation here http://www.ofwat.gov.uk/sustainability/climatechange/rpt_com...

The ´nutidig´ or current aspect of the sentence means that these events are expected to become more frequent in some parts of the world, due to climate change, so they may become 20 or 30-year events or even more frequent.

There is also archaeological evidence that major storm surges and the like have been more or less frequent in different areas in the past, and come in clusters over a comparatively short period, so there might have been five or six events of the magnitude of a ´current´ 100-year event within a single century.

http://www.klimatilpasning.dk/kommuner/klimatilpasningsplane...
(Scroll a good way down, to a heading
Nutidig og fremtidig styrke af ekstremhændelser)
...
Når det nutidige niveau for de forskellige gentagelsesperioder er kendt, kan man på forskellig vis fremskrive data til 2050.
Nedbøren ganges med en klimafaktor.

http://brs.dk/beredskab/Documents/Redegørelse om skybruddet ...

Sorry about the long explanation, but I hope it helps!


Christine Andersen
Denmark
Local time: 16:39
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 34
Grading comment
Many thanks, Christine
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