The data this page describes are here.
Data have been extracted from the new Non-hydrostatic Unified Model (UM) since 14/08/2002, in this the version running at approximately 12 km horizontal resolution, every 6 hours to T+36
Data have been made available for three sites:
Site ID Lat Long 00200110 51.120 -1.480 00200215 52.200 5.200 00200216 51.100 -1.400
The file naming convention is obvious appart from the MES04 prefix which indicates the choice of variables and only has significance to the extraction software. The site IDs are unique to Met Office system and have no international significance. (NB there is a small error in the first location, Chilbolton. This error is not regarded as significant.)
The non-hydrostatic UM uses a terrain-following height-based co-ordinate system with Charney-Philips vertical staggering. Data have been supplied at the actual height of the model level with the exception of u and v which have been interpolated to the theta levels.
NB Cloud liquid water and ice are from the layer cloud scheme. The equivalent from the convection scheme is not available.
Variable STASH FC VC LEV Levels ---------------------------------------------------------------- SPECIFIC HUMIDITY AFTER TIMESTEP 10 95 65 1 1-38 U WIND 2 48 65 1 1-38 V WIND 3 48 65 1 1-38 OROGRAPHY 33 1 129 9999 W COMPNT OF WIND AFTER TIMESTEP 150 42 65 1 1-38 BULK CLOUD FRACTION IN EACH LAYER 266 220 65 0 1-38 SURFACE PRESSURE AFTER TIMESTEP 409 8 129 9999 PRESSURE AT RHO LEVELS AFTER TS 407 8 65 1 1-38 PRESSURE AT THETA LEVELS AFTER TS 408 8 65 1 1-38 NET DOWN SURFACE SW FLUX: SW TS ONLY 1201 186 129 9999 1 INCOMING SW RAD FLUX (TOA): ALL TSS 1207 200 133 8888 1 OUTGOING SW RAD FLUX (TOA) 1208 201 133 8888 1 TOTAL DOWNWARD SURFACE SW FLUX 1235 203 129 9999 1 NET DOWN SURFACE LW RAD FLUX 2201 187 129 9999 1 DOWNWARD LW RAD FLUX: SURFACE 2207 205 129 9999 1 SURFACE HEAT FLUX W/M2 3217 178 129 9999 1 X-COMP OF SURF & BL WIND STRESS N/M2 3219 61 65 1 1 Y-COMP OF SURF & BL WIND STRESS N/M2 3220 62 65 1 1 10 METRE WIND U-COMP B GRID 3225 48 1 9999 1 10 METRE WIND V-COMP B GRID 3226 49 1 9999 1 TEMPERATURE AT 1.5M 3236 16 1 9999 1 SPECIFIC HUMIDITY AT 1.5M 3237 95 1 9999 1 RELATIVE HUMIDITY AT 1.5M 3245 88 1 9999 1 DEWPOINT AT 1.5M (K) 3250 17 1 9999 1 TURBULENT MIXING HT AFTER B.LAYER m 3304 1534 1534 8888 1 STABLE BL INDICATOR 3305 1535 1535 8888 1 STRATOCUM. OVER STABLE BL INDICATOR 3306 1536 1536 8888 1 WELL_MIXED BL INDICATOR 3307 1537 1537 8888 1 DECOUPLED SC. NOT OVER CU. INDICATOR 3308 1538 1538 8888 1 DECOUPLED SC. OVER CU. INDICATOR 3309 1539 1539 8888 1 CUMULUS-CAPPED BL INDICATOR 3310 1540 1540 8888 1 LARGE SCALE RAINFALL RATE KG/M2/S 4203 99 129 8888 1 LARGE SCALE SNOWFALL RATE KG/M2/S 4204 118 129 8888 1 CLOUD LIQUID WATER AFTER LS PRECIP 4205 79 65 1 1-38 CLOUD ICE CONTENT AFTER LS PRECIP 4206 78 65 1 1-38 CONVECTIVE RAINFALL RATE KG/M2/S 5205 98 129 8888 1 CONVECTIVE SNOWFALL RATE KG/M2/S 5206 119 129 8888 1 CONV. CLOUD AMOUNT ON EACH MODEL LEV 5212 34 65 0 1-38 every 3h TOTAL PRECIPITATION RATE KG/M2/S 5216 90 129 8888 1 2D CONVECTIVE CLOUD AMOUNT 5262 34 0 8888 1 TOTAL CLOUD AMOUNT - RANDOM OVERLAP 9216 30 0 8888 1 TOTAL CLOUD AMOUNT MAX/RANDOM OVERLP 9217 30 0 8888 1 WET BULB FREEZING LEV HEIGHT (M) 9221 139 132 8888 1 TEMPERATURE ON MODEL LEVELS 16004 16 65 1 1-38 PRESSURE AT MEAN SEA LEVEL 16222 8 128 8888 1