A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI...
-
date post
19-Dec-2015 -
Category
Documents
-
view
220 -
download
4
Transcript of A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI...
![Page 1: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/1.jpg)
a short demo ….
VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet.
VejVejr provides any tools needed to secure proper decisionmaking with regards to preventing slippery roads.
Contacts:
Pernille Arnsfelt Hansen DMI – [email protected]
Søren Brodersen DMI – [email protected]
![Page 2: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/2.jpg)
Slippery roads when: • Road-temperature < 0• Rime - dewpoint is higher than road-temperature• Ice – moisty or wet roads• Precipitation
We need to know:
• Road-temperature – actual and forecasted• Humidity – dewpoint• Precipitation• Cloudcover• Road condition – wet, moisty, salinity, freezingpoint etc.
![Page 3: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/3.jpg)
Actual time or historic mode
![Page 4: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/4.jpg)
Road T > + 2
Road T < + 2 but above 0
Road T < 0
Road T < 0 and dewpoint higher(riming)
![Page 5: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/5.jpg)
Worst status next 5 hours
![Page 6: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/6.jpg)
Choose your local area…
![Page 7: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/7.jpg)
Forecasts for each roadweatherstation
doubleclick!
![Page 8: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/8.jpg)
Alarm status
![Page 9: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/9.jpg)
Observations
T 2m
Road T
dewpoint
![Page 10: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/10.jpg)
Forecast
Road T < 0 from 02.50 hoursDewpoint is higher – this means riming (hoar frost)
![Page 11: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/11.jpg)
Road resistance – how wet is the road ?
Dry
Moist
Wet
Salty
![Page 12: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/12.jpg)
Forecast of precipitation – time/type/intensityForecast of cloudcoverForecast of wind – direction/speed
To 24 hour forecast
![Page 13: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/13.jpg)
24 hour forecast
Forecasted precipitation:SnowSnow and rain mixedRain
![Page 14: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/14.jpg)
Area-forecast
![Page 15: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/15.jpg)
Comments from meteorologist
![Page 16: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/16.jpg)
Online radar data – 10 min intervals
Precipitationtype and intensity:RainRain and snow mixedSnow (or freezing rain)
Animation
![Page 17: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/17.jpg)
Online satellitedata from MSG2 – 15 min interval
Cloudtype color-code:Dense clouds – Weak radiation, weak road-cooling.Scattered clouds – Periodic radiation, some road cooling.Cirrus – Thin clouds, some radiation, some road cooling.
Animation
Allows you to follow changes in cloudcover – to spot areas with either clear weather (and cooling/radiation) as well as clouds that provide little or no heat-insulation.
![Page 18: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/18.jpg)
Help - explanation
Online help to all screen-images
![Page 19: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/19.jpg)
Online Web-cams
![Page 20: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/20.jpg)
Regional text-forecast
7 days text-forecast
![Page 21: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/21.jpg)
Observations from roadweatherstations - graphics
Roadtemperature
![Page 22: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/22.jpg)
Roadcondition
![Page 23: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/23.jpg)
Precipitation
![Page 24: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/24.jpg)
Salinity
![Page 25: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/25.jpg)
Freezingpoint
![Page 26: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/26.jpg)
Roadweather observations for your chosen area - text
![Page 27: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/27.jpg)
Observations from specific roadweatherstation - text
![Page 28: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/28.jpg)
Animation - your own choise of observed parameters
This function allows you to follow any weather development, for instance roads cooling or precipitation spreading.
All observations can be animated and color-coded as you like it…
![Page 29: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/29.jpg)
Graphics – your own choise of visualisation
![Page 30: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/30.jpg)
Wind forecast (for bridges mainly)
![Page 31: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/31.jpg)
How does it work …?
![Page 32: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/32.jpg)
INPUT: •Observations, from roadweatherstation.
•Meteorological stations
•Satellite data (clouds)
•Atmosphere condition from HIRLAM weather model.
…compute
OUTPUT:
Future road condition.
Numeric ROAD Numeric ROAD CONDITION modelCONDITION model
![Page 33: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/33.jpg)
Model area and road weather station network
Exclusive forecast available for each road-station.
![Page 34: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/34.jpg)
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Prognoselænge
Cel
siu
s
Verification 2006-2007 :
Mean ABSOLUTE error. Mean ABSOLUTE error.
0
10
20
30
40
50
60
70
80
90
100
< 1 1 - 2 > 2
Celsius
%
2005 / 2006
2006 / 2007
(Situations with road temperature between -3 and +3)
Distribution of the 3-Distribution of the 3-hour forecast error.hour forecast error.
Error in degrees Celcius
![Page 35: A short demo …. VejVejr is an internetbased surveillance and forecasting system, developed by DMI and Vejdirektoratet. VejVejr provides any tools needed.](https://reader035.fdocuments.net/reader035/viewer/2022062714/56649d2a5503460f949fe6d6/html5/thumbnails/35.jpg)
Thank you for your attention.Thank you for your attention.
If you have questions or things you would like further explained, please contact us anytime.
Pernille Arnsfelt Hansen, meteorologist, [email protected]
Søren Brodersen, senior meteorologist, [email protected]