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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Feb 10, 2010 10:18 am 
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Tornada
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Membru din: Mie Dec 24, 2008 1:00 pm
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Localitate: Bucuresti
De aceea nici nu se mai updateaza azi, ECM-ul, ca i-a crescut rezolutia. :mrgreen:


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Lun Mar 01, 2010 11:00 pm 
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Admin
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Exista vreun model nehidrostatic disponibil si pentru Romania ?


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Lun Mar 01, 2010 11:07 pm 
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Tornada
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Membru din: Mie Feb 20, 2008 1:00 pm
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din cate stiu, modelul global Met Office NU este hidrostatic... cred ca nu e singurul


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Mar 17, 2010 11:06 am 
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Mr. Green
Mr. Green
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Membru din: Dum Iul 30, 2006 1:00 pm
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Localitate: Mediaş & Sibiu
Cateva date despre modelul Cosmo al ANM: http://www.cosmo-model.org/content/task ... ional/nma/


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Mar 17, 2010 11:09 am 
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Tornada
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Membru din: Mie Feb 20, 2008 1:00 pm
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Localitate: Resita / Timisoara
"14 Server Blades with 2 Intel Xeon Quad Core, 3GHz and 8 Gb RAM on each blade", asta foloseste ANM-ul sa ruleze COSMO, la o rezolutie de 2.8 km

_________________
Oană Liviu
PhD Student - West University of Timisoara, Faculty of Mathematics and Computer Science
Research Assistant - West University of Timisoara, Faculty of Mathematics and Computer Science
http://wrf.rometex.org, e-mail : liviu.oana88@gmail.com


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Mar 17, 2010 11:14 am 
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Mr. Green
Mr. Green
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Membru din: Dum Iul 30, 2006 1:00 pm
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Localitate: Mediaş & Sibiu
+ spatiu de stocare de 4,2 TB.
Bunicel sistem! Oare cum or arata serverele ecmwf sau gfs?


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Mar 17, 2010 11:24 am 
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Mr. Green
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Membru din: Dum Iul 30, 2006 1:00 pm
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Ecmwf: http://www.ecmwf.int/services/computing ... uster.html
http://www.ecmwf.int/services/computing ... story.html


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Mar 17, 2010 11:35 am 
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Mr. Green
Mr. Green
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Membru din: Dum Iul 30, 2006 1:00 pm
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Localitate: Mediaş & Sibiu
Sistemul pe care ruleaza modelul ecmwf, o comparatie intre 1978 si 2009:
(Memorie: 40 TB
Spatiu: 1,2 PB 8O 1 petabyte = 1 million gigabytes )


Fişiere ataşate:
ecmwf.GIF
ecmwf.GIF [ 5.85 KiB | Vizualizat de 1486 ori ]
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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Mar 17, 2010 4:26 pm 
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Weather Guru
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Membru din: Vin Dec 05, 2008 1:00 pm
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Localitate: Cluj-Napoca
"Imagine"

:lol:


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Mie Apr 28, 2010 10:03 pm 
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Membru din: Vin Dec 05, 2008 1:00 pm
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Localitate: Cluj-Napoca
steaua scrie:
Imbunatatiri de rezolutie pe orizontala aduse modelului Ecmwf: http://www.ecmwf.int/publications/cms/g ... 4512002630


GFS vrea sa tina pasul si el...



TECHNICAL IMPLEMENTATION NOTICE 10-15
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
853 AM EDT FRI APR 2 2010

TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS...USERS AND EMPLOYEES

FROM: TIMOTHY MCCLUNG
SCIENCE PLANS BRANCH CHIEF
OFFICE OF SCIENCE AND TECHNOLOGY

SUBJECT: GLOBAL FORECAST SYSTEM CHANGES:
EFFECTIVE JUNE 22 2010.

EFFECTIVE JUNE 22 2010...BEGINNING WITH THE 1200 COORDINATED
UNIVERSAL TIME /UTC/ RUN...THE NATIONAL CENTERS FOR
ENVIRONMENTAL PREDICTION /NCEP/ WILL UPGRADE THE GLOBAL
FORECAST SYSTEM /GFS/. THE RESOLUTION OF THE GLOBAL FORECAST
MODEL WILL BE INCREASED FROM T382 /35 KM/ TO T574 /27 KM
/.
THE HIGH RESOLUTION PORTION OF THE FORECAST WILL BE EXTENDED
FROM 180 HRS TO 192 HRS. WITH THIS EXTENSION 3 HOURLY OUTPUT
WILL BE MADE AVAILABLE OUT TO 192 HOURS.

THIS WILL RESULT IN SIGNIFICANT CHANGES IN THE DEFINITION OF
PARAMETERS IN THE 192 HOUR PRESSURE GRIB /PGRB/ AND FLUX
FILES. THERE WILL ALSO BE SIGNIFICANT CHANGES IN MODEL
PHYSICS ASSOCIATED WITH THIS CHANGE. IN ADDITION
MODIFICATIONS WILL BE MADE TO THE CONTENTS OF THE GLOBAL DATA
ASSIMILATION SYSTEM /GDAS/ AND GFS PGRB FILES.

CHANGES IN MODEL PHYSICS INCLUDE:

RADIATION AND CLOUD OVERLAP
GRAVITY WAVE DRAG
HURRICANE RELOCATION
NEW PLANETARY BOUNDARY LAYER SCHEME
NEW MASS FLUX SHALLOW CONVECTION
UPDATED DEEP CONVECTION SCHEME
POSITIVE DEFINITE TRACER TRANSPORT SCHEME

THE NEW PARAMETER FOR THE GFS FORECAST PRESSURE GRIB
FILES IS:

MAX WIND GUST

SEVERAL PARAMETERS ARE BEING DELETED FROM THE GDAS ANALYSIS
PRESSURE GRIB FILES BECAUSE THEY ARE NOT VALID FOR THE
ANALYSIS DATASET AND HAVE NEVER PROVIDED PERTINENT
INFORMATION. THESE INCLUDE:

4 PRECIPITATION TYPES
CONVECTIVE PRECIPITATION RATE
LAND SEA MASK
LATENT HEAT FLUX
SENSIBLE HEAT FLUX
PRECIPITATION RATE
2M RH
2M SPECIFIC HUMIDITY
2M TEMPERATURE
BOUNDARY LAYER CLOUD COVER
LOW CLOUD COVER
CONVECTIVE CLOUD COVER
SKIN TEMPERATURE
SURFACE UPWARD LONG WAVE FLUX
SURFACE UPWARD SHORT WAVE FLUX HELICITY

THESE PARAMETERS ARE BEING DELETED FROM THE GLOBAL FORECAST
MODEL SIMULATED GOES GRIB FILE BECAUSE THEY WERE INCLUDED IN
ERROR. THESE FIELDS ARE AVAILABLE IN THE PGRB FILES:

MEAN SEA LEVEL PRESSURE
WAVE-5 GEOPOTENTIAL HEIGHT

ALL ACCUMULATED OR AVERAGED VALUES IN THE 192 HOUR PGRB
AND FLUX FILES WILL NOW BE OVER A 6 HOUR PERIOD INSTEAD OF
12 HOURS. THE FORMAT AND CONTENT OF THE 3 HOURLY FILES FROM
180 TO 192 HOURS WILL BE THE SAME AS THE FILES FROM 0 TO 180.
FOR THE FLUX FILE...THIS INCLUDES THE MAJORITY OF THE
PARAMETERS IN THE FILE. PARAMETERS CHANGING IN THE PGRB
FILE ARE:

2 M ABOVE GROUND MAX. TEMPERATURE
2 M ABOVE GROUND MIN. TEMPERATURE
SURFACE ALBEDO
SURFACE CLEAR SKY UV-B DOWNWARD SOLAR FLUX
SURFACE CATEGORICAL FREEZING RAIN
SURFACE CATEGORICAL ICE PELLETS
SURFACE CONVECTIVE PRECIPITATION RATE
SURFACE CATEGORICAL RAIN
SURFACE CATEGORICAL SNOW
ATMOSPHERIC COLUMN CLOUD WORK FUNCTION
SURFACE DOWNWARD LONG WAVE FLUX
SURFACE DOWNWARD SHORT WAVE FLUX
SURFACE UV-B DOWNWARD SOLAR FLUX
SURFACE GROUND HEAT FLUX
SURFACE LATENT HEAT FLUX
SURFACE PRECIPITATION RATE
LOW CLOUD BASE PRESSURE
LOW CLOUD TOP PRESSURE
MID-CLOUD BASE PRESSURE
MID-CLOUD TOP PRESSURE
HIGH CLOUD BASE PRESSURE
HIGH CLOUD TOP PRESSURE
SURFACE SENSIBLE HEAT FLUX
ATMOSPHERIC COLUMN TOTAL CLOUD COVER
BOUNDARY CLOUD LAYER TOTAL CLOUD COVER
LOW CLOUD COVER
MID-CLOUD COVER
HIGH CLOUD COVER
LOW CLOUD TOP TEMPERATURE
MID-CLOUD TOP TEMPERATURE
HIGH CLOUD TOP TEMPERATURE
SURFACE ZONAL GRAVITY WAVE STRESS
SURFACE ZONAL MOMENTUM FLUX
SURFACE UPWARD LONG WAVE FLUX
TOP OF ATMOSPHERE UPWARD LONG WAVE FLUX
SURFACE UPWARD SHORT WAVE FLUX
TOP OF ATMOSPHERE UPWARD SHORT WAVE FLUX
SURFACE MERIDIONAL GRAVITY WAVE STRESS
SURFACE MERIDIONAL MOMENTUM FLUX
SURFACE CONVECTIVE PRECIPITATION
SURFACE TOTAL PRECIPITATION
SURFACE LARGE SCALE PRECIPITATION

NOTE THAT FOR THE 192 HR PGRB PRODUCTS AVAILABLE ON NOAAPORT
AND IN AWIPS THE ACCUMULATIONS AND AVERAGES WILL REMAIN OVER
THE PREVIOUS 12 HOUR PERIOD UNTIL AWIPS IS MODIFIED TO
ACCOMMODATE THIS CHANGE.

THE FORMAT OF THE HALF AND ONE DEGREE PRESSURE GRIB FILES
WILL REMAIN THE SAME EXCEPT FOR THE CHANGES IN VARIABLES
LISTED ABOVE. THE SIZE OF THESE FILES WILL NOT CHANGE
SIGNIFICANTLY. WITH THE INCREASE IN MODEL RESOLUTION... THE
SIZE OF THE SIGMA COEFFICIENT FILES AND THE SURFACE FLUX
FILES WILL INCREASE SIGNIFICANTLY.

THESE CONTENT CHANGES WILL IMPACT ALL DISSEMINATION ROUTES:
NWS PUBLIC FTP SERVER...THE NCEP PUBLIC FTP SERVER...AND
NOAAPORT.

A SET OF TEST DATA IS AVAILABLE AT /USE LOWERCASE/ EXCEPT FOR
GFS AND T574L64:

FTP.EMC.NCEP.NOAA.GOV/GC_WMB/WX24FY/GFS_T574L64/GFS.20091217

A CONSISTENT PARALLEL FEED OF DATA WILL BECOME AVAILABLE ON
THE NCEP FTP SERVER ONCE THE MODEL IS RUNNING IN PARALLEL ON
THE NCEP CENTRAL COMPUTING SYSTEM IN MID APRIL. AT THAT TIME
THE PARALLEL DATA WILL BECOME AVAILABLE VIA THE FOLLOWING URL
/USE LOWERCASE/:

FTP://FTP.NCEP.NOAA....CF/COM/GFS/PARA

DATA DELIVERY TIMING OF THE GFS WILL NOT BE IMPACTED BY THIS
IMPLEMENTATION.

NCEP ENCOURAGES ALL USERS TO ENSURE THEIR DECODERS ARE
FLEXIBLE AND ARE ABLE OF ADEQUATELY HANDLING CHANGES IN
CONTENT...PARAMETER FIELDS CHANGING ORDER...CHANGES IN THE
SCALING FACTOR COMPONENT WITHIN THE PRODUCT DEFINITION
SECTION /PDS/ OF THE GRIB FILES AND ANY VOLUME CHANGES WHICH
MAY OCCUR. THESE ELEMENTS MAY CHANGE WITH FUTURE NCEP MODEL
IMPLEMENTATIONS. NCEP WILL MAKE EVERY ATTEMPT TO alert USERS
TO THESE CHANGES PRIOR TO ANY IMPLEMENTATIONS.

IF YOU HAVE ANY QUESTIONS CONCERNING THESE CHANGES...PLEASE
CONTACT:

JOHN H. WARD
NCEP...GLOBAL MODELING BRANCH
CAMP SPRINGS MARYLAND
PHONE: 301-763-8000 X7185
EMAIL: JOHN.WARD@NOAA.GOV
OR
SHRINIVAS MOORTHI
NCEP...GLOBAL MODELING BRANCH
CAMP SPRINGS MARYLAND
PHONE: 301-763-8000 X7233
EMAIL: SHRINIVAS.MOORTHI@NOAA.GOV

NWS NATIONAL TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT
/USE LOWERCASE/:


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Vin Apr 30, 2010 1:31 am 
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Admin
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Membru din: Mar Feb 10, 2009 1:00 pm
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Localitate: Targu-Mures
La 4.7 GHz ar merge si un palinka cooling :lol: .


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Dum Iun 27, 2010 10:46 pm 
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Tornada
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Membru din: Mie Feb 20, 2008 1:00 pm
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Localitate: Bucuresti
ecmwf EPS update:

http://www.ecmwf.int/publications/cms/get/ecmwfnews/260


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 Subiectul mesajului: GFS imbunatatit
MesajScris: Joi Iul 08, 2010 5:10 pm 
Din 14 iulie 2010 GFS trece la 27 km :)


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Joi Iul 08, 2010 7:36 pm 
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Weather Guru
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Membru din: Vin Dec 05, 2008 1:00 pm
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Localitate: Cluj-Napoca
De la 50 la 27 km? Nu pot sa cred asa ceva... :lol:


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 Subiectul mesajului: Re: Modele numerice
MesajScris: Vin Iul 09, 2010 3:25 pm 
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Mr. Green
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Localitate: Mediaş & Sibiu
De la 35 la 27 km.


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