Home |
Search |
Today's Posts |
![]() |
|
uk.sci.weather (UK Weather) (uk.sci.weather) For the discussion of daily weather events, chiefly affecting the UK and adjacent parts of Europe, both past and predicted. The discussion is open to all, but contributions on a practical scientific level are encouraged. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
![]() |
|||
|
|||
![]()
Little change on the face of it, but actually as NOAA say: "Since
early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...-fcsts-web.pdf About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. |
#2
![]() |
|||
|
|||
![]()
keep it up bigot boy
Dawlish wrote: Little change on the face of it, but actually as NOAA say: "Since early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...-fcsts-web.pdf About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. --- news://freenews.netfront.net/ - complaints: --- |
#3
![]() |
|||
|
|||
![]()
On Mar 12, 11:34*am, T T wrote:
keep it up bigot boy Dawlish wrote: Little change on the face of it, but actually as NOAA say: "Since early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...ng/lanina/enso... About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. --- news://freenews.netfront.net/ - complaints: ---- Hide quoted text - - Show quoted text - Your absence would improve the tone of this forum - here's hoping. |
#4
![]() |
|||
|
|||
![]()
On Mar 12, 2:05*am, RWood wrote:
On Mar 12, 11:34*am, T T wrote: keep it up bigot boy Dawlish wrote: Little change on the face of it, but actually as NOAA say: "Since early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...ng/lanina/enso.... About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. --- news://freenews.netfront.net/ - complaints: ---- Hide quoted text - - Show quoted text - Your absence would improve the tone of this forum - here's hoping.- Hide quoted text - - Show quoted text - It's a cross I have to bear. Welcome back Mr.Wood; I hope the NZ summer has treated you well! Watch those icebergs though.... *)) What are the typical El Nino effects in long white cloud land and have they been present during this one? |
#5
![]() |
|||
|
|||
![]()
On Mar 12, 9:47*pm, Dawlish wrote:
On Mar 12, 2:05*am, RWood wrote: On Mar 12, 11:34*am, T T wrote: keep it up bigot boy Dawlish wrote: Little change on the face of it, but actually as NOAA say: "Since early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...ng/lanina/enso... About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that.. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. --- news://freenews.netfront.net/ - complaints: ---- Hide quoted text - - Show quoted text - Your absence would improve the tone of this forum - here's hoping.- Hide quoted text - - Show quoted text - It's a cross I have to bear. Welcome back Mr.Wood; I hope the NZ summer has treated you well! Watch those icebergs though.... *)) What are the typical El Nino effects in long white cloud land and have they been present during this one?- Hide quoted text - - Show quoted text - The effects of El Nino are more equivocal than in Australia, but broadly speaking the southward migration of summer anticyclones is retarded for a while, and there are more southwesterly flows over the country, with variable but often wetter and cooler conditions in the more southern and southwestern parts of the country, and often drier conditions in the north and east of the country. There is usually a substantial area of colder than average SSTs just out to the east, which sometimes also envelops most of the coastline as well in the early part of the season. Later in the summer a more normal anticyclonic pattern usually returns. In this case temperatures in November and December more or less followed the above, but dryness was much more widespread than in many earlier El Ninos. After a couple of a typical SE events which brought (more or less) unexpected rainfall to some eastern areas, there was a sudden switch to settled anticyclonic weather in late January, and this has held sway until just a few days ago. Most dry areas have had some relief, but in the far north of the country the dry spell has been one of its most prolonged ever. From a holidaymaker viewpoint most areas have had a more enjoyable summer than "expected". The strong 1997-8 EN had some other kind of forcing circulation factor present it seems, as halfway through the season very warm N/NW airflows produced heatwaves and the hottest Februiary on record for the entire country. On the other hand, the 1982-3 event was cool and dry for most of the country, but cold and very wet in the south and southwest. |
#6
![]() |
|||
|
|||
![]()
On Mar 12, 9:19*am, RWood wrote:
On Mar 12, 9:47*pm, Dawlish wrote: On Mar 12, 2:05*am, RWood wrote: On Mar 12, 11:34*am, T T wrote: keep it up bigot boy Dawlish wrote: Little change on the face of it, but actually as NOAA say: "Since early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...ng/lanina/enso... About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. --- news://freenews.netfront.net/ - complaints: ---- Hide quoted text - - Show quoted text - Your absence would improve the tone of this forum - here's hoping.- Hide quoted text - - Show quoted text - It's a cross I have to bear. Welcome back Mr.Wood; I hope the NZ summer has treated you well! Watch those icebergs though.... *)) What are the typical El Nino effects in long white cloud land and have they been present during this one?- Hide quoted text - - Show quoted text - The effects of El Nino are more equivocal than in Australia, but broadly speaking the southward migration of summer anticyclones is retarded for a while, and there are more southwesterly flows over the country, with variable but often wetter and cooler conditions in the more southern and southwestern parts of the country, and often drier conditions in the north and east of the country. There is usually a substantial area of colder than average SSTs just out to the east, which sometimes also envelops most of the coastline as well in the early part of the season. Later in the summer a more normal anticyclonic pattern usually returns. In this case temperatures in November and December more or less followed the above, but dryness was much more widespread than in many earlier El Ninos. After a couple of a typical SE events which brought (more or less) unexpected rainfall to some eastern areas, there was a sudden switch to settled anticyclonic weather in late January, and this has held sway until just a few days ago. Most dry areas have had some relief, but in the far north of the country the dry spell has been one of its most prolonged ever. From a holidaymaker viewpoint most areas have had a more enjoyable summer than "expected". The strong 1997-8 EN had some other kind of forcing circulation factor present it seems, as halfway through the season very warm N/NW airflows produced heatwaves and the hottest Februiary on record for the entire country. On the other hand, the 1982-3 event was cool and dry for most of the country, but cold and very wet in the south and southwest.- Hide quoted text - - Show quoted text - Interesting, Thanks. I hope our coming summer follows something along the same lines as yours did. |
#7
![]() |
|||
|
|||
![]()
im trying to do this group a favour and get rid of that ****
RWood wrote: On Mar 12, 11:34 am, T T wrote: keep it up bigot boy Dawlish wrote: Little change on the face of it, but actually as NOAA say: "Since early February 2009, the heat content has increased across the east- central Pacific in association with the downwellingphase of another Kelvin wave." Anyone following the Monday updates, will see that wasn't expected at that time. The current El Nino is hanging on with a little more strength than was expected. That may not change the eventual speed of its decline, however. NOAA's summary: "•El Niño is present across the equatorial Pacific Ocean. •Sea surface temperatures (SST) are more than 1.0ºCabove-average across much of the central and eastern equatorial Pacific. •Based on current observations and dynamical model forecasts, El Niño is expected to continue at least through the Northern Hemisphere spring 2010." http://www.cpc.ncep.noaa.gov/product...ng/lanina/enso... About 50% of models are going for a decline to a colder than average equatorial pacific by the autumn and 3 go for a La Nina by then. 2 keep the El Nino throughout this year and a number go for a re-warming after a cooling through the summer, from present values. It would be very difficult to justify any predictions of what will actually happen to ENSO during the summer, on the output from these models, as a result. As the Australian BOM says, ENSO becomes notoriously difficult to predict in the Austral autumn and the model output reflects that. The moderate El Nino is presently playing a part in the current very warm march global temperatures: http://discover.itsc.uah.edu/amsutem...?amsutemps+001 Current Hadley Centre research (Scaife et al.) shows that El Nino conditions can produce colder conditions in NW Europe in late winter and early spring. That theory has proven correct for this winter. --- news://freenews.netfront.net/ - complaints: ---- Hide quoted text - - Show quoted text - Your absence would improve the tone of this forum - here's hoping. --- news://freenews.netfront.net/ - complaints: --- |
#8
![]() |
|||
|
|||
![]() |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
ENSO update: ENSO neutral conditions. Trend towards La Nina. | uk.sci.weather (UK Weather) | |||
ENSO update: transition to ENSO neutral conditions under way | uk.sci.weather (UK Weather) | |||
ENSO update from NOAA | uk.sci.weather (UK Weather) | |||
ENSO update from NOAA | uk.sci.weather (UK Weather) | |||
ENSO update from NOAA | uk.sci.weather (UK Weather) |