Difference between revisions of "ECMWF"

From ecology
Jump to: navigation, search
(→‎ECMWF)
(→‎FORECAST)
Line 27: Line 27:
 
== FORECAST ==  
 
== FORECAST ==  
  
−
The FORECAST table contains predicted values in steps of 3 hours till 72 hours ahead. The MODELTS is the timestamp for which this prediction applies. The newer FORECAST data that arrives for the same timestamp will overwrite the older data (with a higer STEP value).  
+
The FORECAST table contains predicted values in steps of 3 hours till 72 hours ahead. The MODELTS is the timestamp for which this prediction applies. Two times a day new Forecast GRIB files will arrive. The newer FORECAST data that arrives for the same timestamp will overwrite the older data.  
  
 
{|border=1
 
{|border=1
Line 108: Line 108:
  
  
 +
== ANALYSIS ==
  
−
ANALYSIS
+
The ANALYSIS table contains values from the Analysis GRIB files at 18, 00, 06 and 12 UTC
−
 
+
−
  MODELTS timestamp,    -- Time for which this forecast applies = model run
+
{|border=1
−
  LATITUDE integer,      -- degrees * 100 to make this a integer
+
|'''MODELTS'''||Time for which this forecast applies = model run
−
  LONGITUDE integer,    -- degrees * 100 to make this a integer
+
|-
−
  SP real,              -- 134 SP surface pressure
+
|'''LATITUDE'''||degrees * 100 to make this a integer
−
  TCC real,              -- 164 TCC total cloud coverage
+
|-
−
  U10 real,              -- 165 10U 10 meters wind U-component
+
|'''LONGITUDE'''||degrees * 100 to make this a integer
−
  V10 real,              -- 166 10V 10 meters wind V-component
+
|-
−
  T2 real,              -- 167 2T 2 metres air temperature
+
|SP||134 SP surface pressure
−
  D2 real,              -- 168 2D 2 metres dew point temperature
+
|-
−
  LCC real,              -- 186 LCC low cloud coverage
+
|TCC||164 TCC total cloud coverage
−
 
+
|-
−
  -- Pressure level 1000
+
|U10||165 10U 10 meters wind U-component
−
  T_1000 real,          -- 130 T temperature
+
|-
−
  U_1000 real,          -- 131 U U-wind component
+
|V10||166 10V 10 meters wind V-component
−
  V_1000 real,          -- 132 V V-wind component
+
|-
−
  GH_1000 real,          -- 156 GH geopotential height
+
|T2||167 2T 2 metres air temperature
−
  R_1000 real,          -- 157 R relative humidity
+
|-
−
 
+
|D2||168 2D 2 metres dew point temperature
−
-- Pressure level 925
+
|-
−
  T_925 real,          -- 130 T temperature
+
|LCC||186 LCC low cloud coverage
−
  U_925 real,          -- 131 U U-wind component
+
|-
−
  V_925 real,          -- 132 V V-wind component
+
|''Pressure level 1000''||
−
  GH_925 real,          -- 156 GH geopotential height
+
|-
−
  R_925 real,          -- 157 R relative humidity
+
|T_1000||130 T temperature
−
 
+
|-
−
-- Pressure level 850
+
|U_1000||131 U U-wind component
−
  T_850 real,          -- 130 T temperature
+
|-
−
  U_850 real,          -- 131 U U-wind component
+
|V_1000||132 V V-wind component
−
  V_850 real,          -- 132 V V-wind component
+
|-
−
  GH_850 real,          -- 156 GH geopotential height
+
|GH_1000||156 GH geopotential height
−
  R_850 real,          -- 157 R relative humidity
+
|-
−
 
+
|R_1000||157 R relative humidity
−
-- Pressure level 700
+
|-
−
  T_700 real,          -- 130 T temperature
+
|Pressure level 925||
−
  U_700 real,          -- 131 U U-wind component
+
|-
−
  V_700 real,          -- 132 V V-wind component
+
|T_925||130 T temperature
−
  GH_700 real,          -- 156 GH geopotential height
+
|-
−
  R_700 real,          -- 157 R relative humidity
+
|U_925||131 U U-wind component
 +
|-
 +
|V_925||132 V V-wind component
 +
|-
 +
|GH_925||156 GH geopotential height
 +
|-
 +
|R_925||157 R relative humidity
 +
|-
 +
|Pressure level 850||
 +
|-
 +
|T_850||130 T temperature
 +
|-
 +
|U_850||131 U U-wind component
 +
|-
 +
|V_850||132 V V-wind component
 +
|-
 +
|GH_850||156 GH geopotential height
 +
|-
 +
|R_850||157 R relative humidity
 +
|-
 +
|Pressure level 700||
 +
|-
 +
|T_700||130 T temperature
 +
|-
 +
|U_700||131 U U-wind component
 +
|-
 +
|V_700||132 V V-wind component
 +
|-
 +
|GH_700||156 GH geopotential height
 +
|-
 +
|R_700||157 R relative humidity
 +
|}

Revision as of 13:50, 9 May 2008

ECMWF

Datamodel for the tables in the ECMWF schema.

Data is created by the ECMWF and retrieved from the KNMI ftp site as GRIB files. The original GRIB files can also be retrieved from the flysafe server from :

ECMWF Data Archive

More information about the parameters in these GRIB files can be retrieved from the ECMWF website.

INVARIABLE

The INVARIABLE table contains data that is invariant over time.

LATITUDE degrees * 100 to make this a integer
LONGITUDE degrees * 100 to make this a integer
Z 129 Z Geopotential surface/model orography
LSM 172 LSM Land sea mask
LOCATION Latitude/longitude as GIS location

FORECAST

The FORECAST table contains predicted values in steps of 3 hours till 72 hours ahead. The MODELTS is the timestamp for which this prediction applies. Two times a day new Forecast GRIB files will arrive. The newer FORECAST data that arrives for the same timestamp will overwrite the older data.

MODELTS Time for which this forecast applies = model run + step hours
LATITUDE degrees * 100 to make this a integer
LONGITUDE degrees * 100 to make this a integer
STEP model step (smaller is more recent forecast)
SSRD 169 SSRD surface solar radiation downwards accumulated
TP 228 TP total precipitation accumulated
SP 134 SP surface pressure
BLH 159 BLH boundary layer height
TCC 164 TCC total cloud coverage
U10 165 10U 10 meters wind U-component
V10 166 10V 10 meters wind V-component
T2 167 2T 2 metres air temperature
D2 168 2D 2 metres dew point temperature
LCC 186 LCC low cloud coverage
Pressure level 1000
T_1000 130 T temperature
U_1000 131 U U-wind component
V_1000 132 V V-wind component
GH_1000 156 GH geopotential height
R_1000 157 R relative humidity
Pressure level 925
T_925 real 130 T temperature
U_925 real 131 U U-wind component
V_925 real 132 V V-wind component
GH_925 real 156 GH geopotential height
R_925 real 157 R relative humidity
Pressure level 850
T_850 130 T temperature
U_850 real 131 U U-wind component
V_850 real 132 V V-wind component
GH_850 real 156 GH geopotential height
R_850 real 157 R relative humidity
Pressure level 700
T_700 real 130 T temperature
U_700 real 131 U U-wind component
V_700 real 132 V V-wind component
GH_700 real 156 GH geopotential height
R_700 real 157 R relative humidity


ANALYSIS

The ANALYSIS table contains values from the Analysis GRIB files at 18, 00, 06 and 12 UTC

MODELTS Time for which this forecast applies = model run
LATITUDE degrees * 100 to make this a integer
LONGITUDE degrees * 100 to make this a integer
SP 134 SP surface pressure
TCC 164 TCC total cloud coverage
U10 165 10U 10 meters wind U-component
V10 166 10V 10 meters wind V-component
T2 167 2T 2 metres air temperature
D2 168 2D 2 metres dew point temperature
LCC 186 LCC low cloud coverage
Pressure level 1000
T_1000 130 T temperature
U_1000 131 U U-wind component
V_1000 132 V V-wind component
GH_1000 156 GH geopotential height
R_1000 157 R relative humidity
Pressure level 925
T_925 130 T temperature
U_925 131 U U-wind component
V_925 132 V V-wind component
GH_925 156 GH geopotential height
R_925 157 R relative humidity
Pressure level 850
T_850 130 T temperature
U_850 131 U U-wind component
V_850 132 V V-wind component
GH_850 156 GH geopotential height
R_850 157 R relative humidity
Pressure level 700
T_700 130 T temperature
U_700 131 U U-wind component
V_700 132 V V-wind component
GH_700 156 GH geopotential height
R_700 157 R relative humidity
Retrieved from "https://wiki.e-ecology.nl/index.php?title=ECMWF&oldid=91"