NWS Nieuws & Achtergronden
Discussieer hier diepgaander over de actualiteiten.
Haha, briljant. Heeft iemand dit al gesubmit op de frontpage?quote:Op maandag 2 januari 2012 12:33 schreef Jabberwocky het volgende:
Voorjaar 2012 is al begonnen
Jep, horrorwintertje.
Dat zal die horrorwintervoorspellers leren!
Op zijn minst zal er nog wel wat nachtvorst komen. Overigens kan het in februari ook nog ongenadig hard vriezen dus de winterliefhebbers hoeven nog niet te vrezen. En ik zou die winterbanden ook nog gewoon laten zitten.
"It's hard to argue against cynics - they always sound smarter than optimists because they have so much evidence on their side."
laat de lente maar komen, ben "de winter" alweer beu
misteriks' contribution is sponsored by Great Attitude Inc.
Die ene dag dat er een beetje vorst was in de nacht is je teveel geweest?quote:Op maandag 2 januari 2012 18:20 schreef misteriks het volgende:
laat de lente maar komen, ben "de winter" alweer beu
Doe maar gewoon, dan doe je al dom genoeg
[quote]Op donderdag 15 januari 2009 11:22 schreef EchtGaaf het volgende:
Ik blijf vinden dat het werk van een CEO zwaar wordt ondergewaardeerd.
[quote]Op donderdag 15 januari 2009 11:22 schreef EchtGaaf het volgende:
Ik blijf vinden dat het werk van een CEO zwaar wordt ondergewaardeerd.
Ik vond eigenlijk die overdosering van de vorige winter ook wel reden genoeg.quote:Op maandag 2 januari 2012 18:25 schreef DS4 het volgende:
[..]
Die ene dag dat er een beetje vorst was in de nacht is je teveel geweest?
Nou, blijkbaar niet. Maar zodra er weer sneeuw ligt mag je rustig proberen langs te komen bij mij. Of nog beter: proberen weg te komen, want met zomerbanden lukt je dat niet.quote:
[..]
Ja, zeker ik ben niet op de hoogte van de topografie van ons land?.
Wat een flauwekul is dit joh, met je hoogteverschillen in Limburg, Drenthe, Nijmegen.
Echt werkelijkwaar om je te bescheuren.
==========================
Winterstorm NL: veel regen, veel wind en niet echt koud.quote:
Gaat er nog een winter komen (al dan niet in horrorvariant)?
Misschien nog wel wat nachtvorst of een enkel sneeuwbuitje, maar dat zal de winter dan wel weer zijn.
Wel interessant: zal het komende voorjaar weer net zo zomers worden als de voorgaande jaren?
Repent, Pray, Forgive
Overzicht privacy-inperkende maatregelen/wetten/voorstellen
Mensen doen niet dingen omdat ze dat willen, maar omdat het kan.
Overzicht privacy-inperkende maatregelen/wetten/voorstellen
Mensen doen niet dingen omdat ze dat willen, maar omdat het kan.
Heerlijk was dat. Lekker gladde wegen... Helaas lag daardoor ook de bouw bij ons stil, maar toch...quote:
Ik vond eigenlijk die overdosering van de vorige winter ook wel reden genoeg.
Doe maar gewoon, dan doe je al dom genoeg
[quote]Op donderdag 15 januari 2009 11:22 schreef EchtGaaf het volgende:
Ik blijf vinden dat het werk van een CEO zwaar wordt ondergewaardeerd.
[quote]Op donderdag 15 januari 2009 11:22 schreef EchtGaaf het volgende:
Ik blijf vinden dat het werk van een CEO zwaar wordt ondergewaardeerd.
Volgens mij is het nog net iets te vroeg om dat als vaststaand aan te nemen...quote:
Winterstorm NL: veel regen, veel wind en niet echt koud.
Misschien nog wel wat nachtvorst of een enkel sneeuwbuitje, maar dat zal de winter dan wel weer zijn.
Ik denk het wel, maar ik heb er ook absoluut geen verstand van.quote:Wel interessant: zal het komende voorjaar weer net zo zomers worden als de voorgaande jaren?
Doe maar gewoon, dan doe je al dom genoeg
[quote]Op donderdag 15 januari 2009 11:22 schreef EchtGaaf het volgende:
Ik blijf vinden dat het werk van een CEO zwaar wordt ondergewaardeerd.
[quote]Op donderdag 15 januari 2009 11:22 schreef EchtGaaf het volgende:
Ik blijf vinden dat het werk van een CEO zwaar wordt ondergewaardeerd.
Voorspellingen over de lente zijn net zo zinloos als die over de winter. Jaargetijden laten zich niet voorspellen. Daar is het systeem te chaotisch voor.quote:
Wel interessant: zal het komende voorjaar weer net zo zomers worden als de voorgaande jaren?
"It's hard to argue against cynics - they always sound smarter than optimists because they have so much evidence on their side."
Niet bepaald wat je noemt 'half november.'quote:
Nou, misschien dat het later deze week toch een keer winter wordt
Ik heb nog nooit zo vaak in de winter met de jas los gelopen als in deze winter 
Perhaps you've seen it, maybe in a dream.
A murky, forgotten land.
A murky, forgotten land.
Ik trek mijn jas niet eens meer aan op dagen als vandaag, en ik vanuit de auto 40 meter verderop naar binnen moet en weer terug. Buiten een sigaretje roken gaat ook prima met alleen een trui aan.quote:
Ik heb nog nooit zo vaak in de winter met de jas los gelopen als in deze winter
http://www.aljazeera.com/weather/2012/01/2012139495246975.html
For the last month, many parts of North America and Europe have been seeing some very mild weather. This has been great news for some, but not for the skiers. Certainly it’s been a stark contrast to last year’s heavy snow.
For the month of December, many parts have now reported that their average temperatures were well above average.
For the UK, the average was only 0.5C above the usual December temperature, but when you compare this to the year before, which was 5C below the average, you realise why it’s such a hot topic of conversation.
In Sweden, the mild weather has been more pronounced. December was classed as the one of the ten warmest in the last 250 years, and much of the country is still devoid of snow. In the capital, Stockholm, the temperatures were 3C above the norm, but in northern Sweden, the contrast was far greater; Norbotten was over 7C above the average.
Across the Alps the weather has also be very mild, with snow absent across most mountainsides until the beginning of December. For Switzerland, 2011 brought the highest average temperature since 1864.
The snow has now arrived in the Alps, but it arrived in a hurry. The various layers of fresh snow haven’t yet bonded together properly, leading to a high risk of avalanches.
Across the other side of the Atlantic, it has been very mild for North America too. Many parts of Canada had to wait very late for their first snowfall of the year and the first decent lake-effect snowstorm is only now heading across the northeastern states of the USA.
But before this, it stayed mild across many parts of the Plains for weeks. In Kansas, Topeka’s December temperature was nearly 1.5C warmer than usual, and the sun continued to shine.
The question many people are asking is why?
For a start, it’s a bit of a vicious cycle. Because it has been mild and dry, there is far less snow than usual. Some of the sun’s energy would normally be used to melt the snow lying on the ground, but because there is so little around, this energy can all go directly into warming the ground and the air.
The other reason, however, is slightly more technical: it’s thanks to the North Atlantic Oscillation.
The North Atlantic Oscillation (NAO) is a natural phenomenon, much like La Nina or El Nino. Whereas La Nina sets up in the waters of the Pacific, the NAO is centred in the atmosphere above the Atlantic.
The definition of the NAO is the difference in pressure between Greenland and the Azores. When the pressure is low over Greenland and high over the Azores, the NAO is said to be in a positive phase. This set up encourages the air to flow northeast across the Atlantic into Europe. The weather for both North America and Europe is mild.
In a negative phase, the pressure over Greenland and Azores are similar. This sets up a blocking pattern across the Atlantic. The mild weather from the southwest is prevented from getting to Europe and it also makes things cooler for North America too. The weather is prevented from flowing out of eastern parts of the States, and the cold weather lingers.
As you may have guessed, in December the NAO was in a positive phase, bring mild weather to many parts. In the winter of in 2009-10 and 2010-11 the NAO remained strongly negative, bringing cold weather with plenty of snow.
Predicting the Future
Forecasting the NAO is still the cause of headaches for meteorologists.
The La Nina / El Nino cycle is slow-moving and tends to stay in one phase for several months, but the NAO can bounce between positive and negative phases at will. Sometimes, however, if the NAO is strongly positive or strongly negative, it can get stuck, and linger in the same phase for weeks at a time.
Despite having such an acute effect on our weather, the NAO can only be forecast for two weeks in advance and even then the accuracy is not perfect. The current prediction is that NAO will become negative in the next two weeks. This could lead to a burst of rather chilly weather for both sides of the Atlantic.
If the cold weather does materialise by the middle of January, it be a shock for many after the mild December weather, but at least the skiers will be happy.
Er is hoop
For the last month, many parts of North America and Europe have been seeing some very mild weather. This has been great news for some, but not for the skiers. Certainly it’s been a stark contrast to last year’s heavy snow.
For the month of December, many parts have now reported that their average temperatures were well above average.
For the UK, the average was only 0.5C above the usual December temperature, but when you compare this to the year before, which was 5C below the average, you realise why it’s such a hot topic of conversation.
In Sweden, the mild weather has been more pronounced. December was classed as the one of the ten warmest in the last 250 years, and much of the country is still devoid of snow. In the capital, Stockholm, the temperatures were 3C above the norm, but in northern Sweden, the contrast was far greater; Norbotten was over 7C above the average.
Across the Alps the weather has also be very mild, with snow absent across most mountainsides until the beginning of December. For Switzerland, 2011 brought the highest average temperature since 1864.
The snow has now arrived in the Alps, but it arrived in a hurry. The various layers of fresh snow haven’t yet bonded together properly, leading to a high risk of avalanches.
Across the other side of the Atlantic, it has been very mild for North America too. Many parts of Canada had to wait very late for their first snowfall of the year and the first decent lake-effect snowstorm is only now heading across the northeastern states of the USA.
But before this, it stayed mild across many parts of the Plains for weeks. In Kansas, Topeka’s December temperature was nearly 1.5C warmer than usual, and the sun continued to shine.
The question many people are asking is why?
For a start, it’s a bit of a vicious cycle. Because it has been mild and dry, there is far less snow than usual. Some of the sun’s energy would normally be used to melt the snow lying on the ground, but because there is so little around, this energy can all go directly into warming the ground and the air.
The other reason, however, is slightly more technical: it’s thanks to the North Atlantic Oscillation.
The North Atlantic Oscillation (NAO) is a natural phenomenon, much like La Nina or El Nino. Whereas La Nina sets up in the waters of the Pacific, the NAO is centred in the atmosphere above the Atlantic.
The definition of the NAO is the difference in pressure between Greenland and the Azores. When the pressure is low over Greenland and high over the Azores, the NAO is said to be in a positive phase. This set up encourages the air to flow northeast across the Atlantic into Europe. The weather for both North America and Europe is mild.
In a negative phase, the pressure over Greenland and Azores are similar. This sets up a blocking pattern across the Atlantic. The mild weather from the southwest is prevented from getting to Europe and it also makes things cooler for North America too. The weather is prevented from flowing out of eastern parts of the States, and the cold weather lingers.
As you may have guessed, in December the NAO was in a positive phase, bring mild weather to many parts. In the winter of in 2009-10 and 2010-11 the NAO remained strongly negative, bringing cold weather with plenty of snow.
Predicting the Future
Forecasting the NAO is still the cause of headaches for meteorologists.
The La Nina / El Nino cycle is slow-moving and tends to stay in one phase for several months, but the NAO can bounce between positive and negative phases at will. Sometimes, however, if the NAO is strongly positive or strongly negative, it can get stuck, and linger in the same phase for weeks at a time.
Despite having such an acute effect on our weather, the NAO can only be forecast for two weeks in advance and even then the accuracy is not perfect. The current prediction is that NAO will become negative in the next two weeks. This could lead to a burst of rather chilly weather for both sides of the Atlantic.
If the cold weather does materialise by the middle of January, it be a shock for many after the mild December weather, but at least the skiers will be happy.
Er is hoop
Grtz, Theo
follower since 2001, active in 2011
follower since 2001, active in 2011
Beetje later, maar wie weet toch nog. 
Never in the entire history of calming down did anyone ever calm down after being told to calm down.
Ah, daar gaan we weer! 
Nou laat maar komen, wordt nu wel tijd
Nou laat maar komen, wordt nu wel tijd
Op woensdag 22 januari 2025 19:50 schreef Bugno3 het volgende:
Stukje Pelle, stukje Cannavaro, stukje Totti.
Stukje Pelle, stukje Cannavaro, stukje Totti.
