The products consist of control and perturbed forecasts plus the equivalent deterministic products. Costumers choosing forecast steps from Leg 2 (see below) will receive an high resolution and a low resolution calibration forecast at no extra cost. The deterministic product is suppressed beyond day 10. The fields are provided in GRIB code.

1.1 Parameters

III-i-a) Single level parameters (6 hourly products)

10 metre U-velocity (10U)
10 metre V-velocity (10V)
10 metre wind gust in the past 6 hours (10FG6)
100 metre U-velocity (100U)
100 metre V-velocity (100V)
2 metre dewpoint temperature (2D)
2 metre temperature (2T)
Cloud base height (CBH)
Convective available potential energy (CAPE)
Evaporation (E)
High cloud cover (HCC)
Low cloud cover (LCC)
Land/sea mask (LSM)
Maximum temperature at 2m in the last 6hours (MX2T6)
Mean sea level pressure (MSL)
Medium cloud cover (MCC)
Minimum temperature at 2m in the last 6hours (MN2T6)
Orography (Z)
Sea surface temperature (SSTK)
Snow depth (SD)
Snow density (RSN)
Snow fall (convective + stratiform) (SF)
Soil temperature level 1 (STL1)
Soil temperature level 2 (STL2)
Soil temperature level 3 (STL3)
Soil temperature level 4 (STL4)
Surface pressure (SP)
Surface solar radiation downwards (SSRD)
Total cloud cover (TCC)
Total precipitation (TP)
Volumetric soil water layer 1 (SWVL1)
Volumetric soil water layer 2 (SWVL2)
Volumetric soil water layer 3 (SWVL3)
Volumetric soil water layer 4 (SWVL4)
Zero degree level (DEG0)

If requested, the following parameters can be provided free of charge once with every forecast dissemination.

Land-sea mask (LSM)
Model orography (Z)

III-i-b) Pressure level parameters

At levels 1000, 925, 850, 700, 500, 400, 300, 200, 100, 50, 10 hPa:
- Divergence (D)
- Geopotential height (GH)
- Relative humidity (R)
- Specific humidity (Q)
- Temperature (T)
- U-velocity (U)
- V-velocity (V)
- Vertical velocity (W)
- Vorticity (VO)
At level 200 hPa:
- Stream function (STRF)
- Velocity potential (VPOT)

1.2 Product resolution

Leg 1:	0.25° x 0.25° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160, N320 grid (global or sub-area) Spectral components (T319, T639) for upper-air fields (global area only)
Leg 2:	0.5° x 0.5° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160 grid (global or sub-area) Spectral components (T319) for upper-air fields (global area only)

1.3 Forecast time-steps

Leg 1:	T+0h to T+144h at 3-hour intervals, T+150h to T+240h at 6-hour intervals
Leg 2:	T+246h to T+360h at 6-hour intervals

MN2T6, MX2T6 and 10FG6 are only available from T+0h to T+240h at 6-hour interval

1.4 Base times

00 UTC, 12 UTC

III-ii: Clusters

2.1 Parameters

At 500 hPa:
- Geopotential height (GH)

2.2 Product resolution

1.5° x 1.5° lat/long grid or any multiple thereof (global or sub-area)

2.3 Forecast time-steps for Clusters

T+120h to T+168h at 12-hour intervals

2.4 Clustering-domains for Clusters

H: European Area (70° N, 20° W, 30° N, 40° E)

2.5 Base times

00 UTC, 12 UTC

III-iii: Probabilities

The products provide the probabilities of the occurrence of instantaneous and averaged or accumulated weather events at each grid point. The products are encoded in GRIB form.

3.1 Parameters

III-iii-a) Single level parameters (instantaneous weather events)

10 metre Wind speed of at least 10 m/s (10SPG10)
10 metre Wind speed of at least 15 m/s (10SPG15)

III-iii-b) Single level parameters (averaged weather events)

Total precipitation less than 0.1 mm (TPL01)
Total precipitation rate less than 1 mm/day (TPRL1)
Total precipitation rate of at least 3 mm/day (TPRG3)
Total precipitation rate of at least 5 mm/day (TPRG5)

III-iii-c) Pressure level parameters (instantaneous weather anomalies)

Temperature anomaly greater than +4 K (TAG4)
Temperature anomaly greater than +8 K (TAG8)
Temperature anomaly less than -4 K (TALM4)
Temperature anomaly less than -8 K (TALM8)

All parameters are available at levels 850 hPa

III-iii-d) Pressure level parameters (averaged weather anomalies)

Temperature anomaly less than -2 K (TALM2)
Temperature anomaly of at least +2 K (TAG2)

All parameters are available at levels 850 hPa

III-iii-e) Single level parameters (daily weather events)

Total precipitation of at least 1 mm (TPG1)
Total precipitation of at least 10 mm (TPG10)
Total precipitation of at least 20 mm (TPG20)
Total precipitation of at least 5 mm (TPG5)
10 meter wind gust greater than 15 m/s (10FGG15)
10 meter wind gust greater than 20 m/s (10FGG20)
10 meter wind gust greater than 25 m/s (10FGG25)

3.2 Product resolution

Leg 1:	0.25° x 0.25° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160, N320 grid (global or sub-area)
Leg 2:	0.5° x 0.5° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160 grid (global or sub-area)

3.3 Forecast time-steps instantaneous weather events/anomalies

For subsets III-iii-a and III-iii-c:

Leg 1:	T+24h to T+240h at 24-hour intervals
Leg 2:	T+264h to T+360h at 24-hour intervals

3.3 Forecast ranges for averaged events

For subsets III-iii-b and III-iii-d:

Leg 1:	5 -day period covering 120h < T ≤ 240h 2 -day period covering 120h < T ≤ 168h 3 -day period covering 168h < T ≤ 240h
Leg 2:	5-day periods: 240h < T ≤ 360h

3.3 Forecast time-steps daily weather events

For subset III-iii-e:

Leg 1:	T+0 to T+240h at 12-hour range intervals
Leg 2:	T+252h to T+360h at 12-hour range intervals

3.4 Base times

00 UTC, 12 UTC

III-iv: Time series of weather parameters

The products consist of values of the individual members of the real-time forecast at grid points (single locations). The products are provided in BUFR code.

4.1 Parameters

10 metre U-velocity (10U)
10 metre V-velocity (10V)
10 metre wind gust in the past 6 hours (10FG6)
2 metre dewpoint temperature (2D)
2 metre temperature (2T)
Land/sea mask (LSM)
Maximum temperature at 2m in the last 6hours (MX2T6)
Mean sea level pressure (MSL)
Minimum temperature at 2m in the last 6hours (MN2T6)
Snow fall (convective + stratiform) (SF)
Total cloud cover (TCC)
Total precipitation (TP)

4.2 Product resolution

Option 1:	On model (Gaussian) N320 grid
Option 2:	On model (Gaussian) N320 grid for T+0h to T+240h at 6-hour intervals and On model (Gaussian) N160 grid for T+246h to T+360h at 6-hour intervals

4.3 Forecast time-steps

Option 1:	T+0h to T+240h at 6-hour intervals
Option 2:	T+0h to T+360h at 6-hour intervals

4.4 Base times

00 UTC, 12 UTC

III-v: Extreme Forecast Index

The products provide the extreme forecast index of single level parameters of instantaneous, averaged and accumulated values at each grid point. The products are encoded in GRIB form.

5.1 Parameters

III-v-a) Single level parameters (daily mean extreme forecast indexes, 00Z)

10 metre wind speed index (10WSI)
2 metre temperature index (2TI)

III-v-b) Single level parameters (daily mean extreme forecast indexes, 12Z)

10 metre wind speed index (10WSI)
2 metre temperature index (2TI)

III-v-c) Single level parameters (daily accumulated extreme forecast indexes, 00Z)

Total precipitation index (TPI)

III-v-d) Single level parameters (daily accumulated extreme forecast indexes, 12Z)

Total precipitation index (TPI)

III-v-e) Single level parameters (24 hour maximum value extreme forecast indexes, 00Z)

10 metre wind gust index (10FGI)

III-v-f) Single level parameters (24 hour maximum value extreme forecast indexes, 12Z)

10 metre wind gust index (10FGI)

5.2 Product resolution

0.25° x 0.25° lat/long grid or any multiple thereof (global or sub-area)

5.3 Forecast time-steps for daily mean and 24 hour maximum values extreme forecast indexes

T+24h to T+120h at 24-hour intervals (for III-v-a and III-v-e)

T+12h to T+132h at 24-hour intervals (for III-v-b and III-v-f)

5.4 Forecast ranges for accumulated extreme forecast indexes

T+24h to T+120h, 1 day period (for III-v-c)
T+00h to T+120h, 5 day period (for III-v-c)
T+24h to T+144h, 5 day period (for III-v-c)
T+00h to T+240h, 10 day period (for III-v-c)

T+12h to T+132h, 1 day period (for III-v-d)
T+00h to T+120h, 5 day period (for III-v-d)
T+24h to T+144h, 5 day period (for III-v-d)
T+00h to T+240h, 10 day period (for III-v-d)

5.5 Base times

00 UTC, 12 UTC

III-vi: Ensemble means

The fields are the means of the ensemble members at each forecast step. The fields are provided in GRIB code.

6.1 Parameters

III-vi-a) Single level parameters

Mean Sea Level (MSL)

III-vi-b) Pressure level parameters

At 1000, 500 hPa:
- Geopotential height (GH)
At 850, 500 hPa:
- Temperature (T)
At 850:
- Wind Speed (WS)

6.2 Product resolution

Leg 1:	0.25° x 0.25° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160, N320 grid (global or sub-area) Spectral components (T319, T639) for upper-air fields (global area only)
Leg 2:	0.5° x 0.5° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160 grid (global or sub-area) Spectral components (T319) for upper-air fields (global area only)

6.3 Forecast time-steps

Leg 1:	T+6h to T+240h at 6-hour intervals
Leg 2:	T+246h to T+360h at 6-hour intervals

6.4 Base times

00 UTC, 12 UTC

III-vii: Ensemble standard deviations

The fields are the standard deviations of the ensemble members at each forecast step. The fields are provided in GRIB code.

7.1 Parameters

III-vi-a) Single level parameters

Mean Sea Level (MSL)

III-vii) Pressure level parameters

At 1000, 500 hPa:
- Geopotential height (GH)
At 850, 500 hPa:
- Temperature (T)
At 850:
- Wind Speed (WS)

7.2 Product resolution

Leg 1:	0.25° x 0.25° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160, N320 grid (global or sub-area) Spectral components (T319, T639) for upper-air fields (global area only)
Leg 2:	0.5° x 0.5° lat/long grid or any multiple thereof (global or sub-area) On model (Gaussian) N160 grid (global or sub-area) Spectral components (T319) for upper-air fields (global area only)

7.3 Forecast time-steps

Leg 1:	T+6h to T+240h at 6-hour intervals
Leg 2:	T+246h to T+360h at 6-hour intervals

7.4 Base times

00 UTC, 12 UTC

23-03-2006