{"id":51887,"date":"2026-04-27T15:07:52","date_gmt":"2026-04-27T15:07:52","guid":{"rendered":"https:\/\/nwp-saf.eumetsat.int\/site\/?page_id=51887"},"modified":"2026-04-27T15:08:55","modified_gmt":"2026-04-27T15:08:55","slug":"use-of-amvs-in-dwd-model","status":"publish","type":"page","link":"https:\/\/nwp-saf.eumetsat.int\/site\/monitoring\/winds-quality-evaluation\/amv\/amv-use-in-nwp\/use-of-amvs-in-dwd-model\/","title":{"rendered":"Use of AMVs in the DWD model"},"content":{"rendered":"

Use of AMVs in the DWD model<\/h2>\n

Physical characteristics<\/span><\/h3>\n

Global Model<\/span><\/h4>\n
    \n
  • Non-hydrostatic grid point model using a triangular (icosahedral) grid derived from a spherical projection of an icosahedron.<\/li>\n
  • Horizontal resolution: 2949120 triangular cells with an average resolution of 13.2 km.<\/li>\n
  • Vertical resolution: 120 layers.<\/li>\n
  • Analysis times: 00 03 06 09 12 15 18 21 UTC.<\/li>\n
  • Forecast range: 7 days.<\/li>\n<\/ul>\n

    Data assimilation method<\/span><\/h3>\n

    Global Model<\/span><\/h4>\n
      \n
    • Type: 3D-Ensemble-Var. Errors of the day information provided by global ensemble with 26 km resolution every 3 hours blended with climatological errors (currently contributing 25%).<\/li>\n
    • Time window: T \u00b1 1,5 hrs.<\/li>\n
    • Time constraints (in UTC):\n
        \n
      • Main forecast run: 2 hrs 20 min after 00 \/ 12<\/li>\n
      • Update runs: for 00 \/ 12: +11:30; for 03 \/ 15: +9:05; for 06 \/ 18: +6:35; for 09 \/ 21: +4:35<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

        AMV tpes assimilated<\/span><\/h3>\n

        Global Model<\/span><\/h4>\n
          \n
        • Meteosat-9\/-10\/: IR10.8, HRVIS, VIS0.8, cloudy WV6.2, cloudy WV7.3.<\/li>\n
        • GOES-16\/-18: IR3.8, IR, VIS, cloudy WV6.15.<\/li>\n
        • Himawari-9: IR, VIS, cloudy WV6.95.<\/li>\n
        • Metop-B\/C BUFR IR single product.<\/li>\n
        • Metop-B\/C BUFR IR dual product (B-C and C-B pairs only).<\/li>\n
        • CIMSS AVHRR NOAA-20\/-21 IR.<\/li>\n
        • S-NPP VIIRS IR.<\/li>\n<\/ul>\n

          Global quality control<\/span><\/h3>\n

          Blacklisting in space<\/span><\/h4>\n
            \n
          • All winds reporting in height at or above 150 hPa.<\/li>\n
          • MSG WV, Himawari WV 6.7, and GOES WV below 400 hPa.<\/li>\n
          • All polar WV and CSWV winds below 600 hPa.<\/li>\n
          • All MSG IR, VIS and HRVIS winds below 600 hPa over land north of 0 degrees.<\/li>\n
          • All Himawari and GOES IR and visible winds below 600 hPa over land north of 20N.<\/li>\n
          • Low and mid level winds dependent on topography.<\/li>\n<\/ul>\n

            QI thresholds<\/span><\/h4>\n

            The table below is intended only as a guide to the QI thresholds used.
            \nPlease see the section on blacklisting in space for specific details on which geographical areas are used.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
            <\/td>\nextratropics<\/td>\ntropics<\/td>\n<\/tr>\n
            HL<\/td>\nML<\/td>\nLL<\/td>\nHL<\/td>\nML<\/td>\nLL<\/td>\n<\/tr>\n
            GOES-16\/18<\/td>\nQI2<\/td>\nIR<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\n90<\/td>\n<\/tr>\n
            VIS<\/td>\n\u2013<\/td>\n\u2013<\/td>\n90<\/td>\n\u2013<\/td>\n\u2013<\/td>\n90<\/td>\n<\/tr>\n
            WV6.15<\/td>\n90<\/td>\n\u2013<\/td>\n\u2013<\/td>\n90<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
            Meteosat-9\/10<\/td>\nQI1<\/td>\nIR<\/td>\n85<\/td>\n90<\/td>\n85<\/td>\n85<\/td>\n90<\/td>\n85<\/td>\n<\/tr>\n
            VIS0.8<\/td>\n\u2013<\/td>\n\u2013<\/td>\n65<\/td>\n\u2013<\/td>\n\u2013<\/td>\n85<\/td>\n<\/tr>\n
            WV7.3<\/td>\n80<\/td>\n80*<\/td>\n\u2013<\/td>\n85<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
            WV6.2<\/td>\n80<\/td>\n\u2013<\/td>\n\u2013<\/td>\n85<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
            Himawari-9<\/td>\nQI2<\/td>\nIR<\/td>\n85<\/td>\n85<\/td>\n87<\/td>\n85<\/td>\n86<\/td>\n85<\/td>\n<\/tr>\n
            VIS<\/td>\n\u2013<\/td>\n\u2013<\/td>\n85<\/td>\n\u2013<\/td>\n\u2013<\/td>\n85<\/td>\n<\/tr>\n
            WV6.95<\/td>\n85<\/td>\n\u2013<\/td>\n\u2013<\/td>\n86<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
            Metop1\/2\/3
            \nS-NPP
            \nNOAA-20\/21<\/td>\n            		QI1<\/td>\nIR<\/td>\n50**<\/td>\n50**<\/td>\n50<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            *: only southern hemisphere; **: 60 for southern hemisphere<\/p>\n

            tropics: 20S-20N
            \nextratropics: polewards of 20S\/N<\/p>\n

            hl: 100-400 hPa
            \nml: 400-700 hPa
            \nll: 700-1000 hPa<\/p>\n

            QI1 \u2013 EUMETSAT QI with first guess check
            \nQI2 \u2013 EUMETSAT QI without first guess check<\/p>\n

            Thinning<\/span><\/h4>\n
              \n
            • All winds thinned in triangles with a horizontal distance of around 240 km and 100 hPa vertical resolution.<\/li>\n
            • Wind selected by highest QI, closest to analysts time and closest to the centre of the triangle.<\/li>\n
            • Winds are assimilated in 90 min time-slots.<\/li>\n<\/ul>\n

              Background check<\/span><\/h4>\n
                \n
              • Comparison with 3h forecast from previous model run.<\/li>\n<\/ul>\n

                Observation errors<\/span><\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                <\/td>\n<\/tr>\n
                1000 hPa<\/td>\n850 hPa<\/td>\n700 hPa<\/td>\n500 hPa<\/td>\n400 hPa<\/td>\n300 hPa<\/td>\n250 hPa<\/td>\n200 hPa<\/td>\n150 hPa<\/td>\n100 hPa<\/td>\n<\/tr>\n
                Meteosat-9\/10<\/td>\nNH<\/td>\n1.8<\/td>\n2.0<\/td>\n2.0<\/td>\n3.0<\/td>\n3.6<\/td>\n3.6<\/td>\n3.4<\/td>\n3.6<\/td>\n4.0<\/td>\n4.0<\/td>\n<\/tr>\n
                TR<\/td>\n1.26<\/td>\n1.4<\/td>\n1.4<\/td>\n2.1<\/td>\n2.52<\/td>\n2.52<\/td>\n2.38<\/td>\n2.52<\/td>\n2.8<\/td>\n2.8<\/td>\n<\/tr>\n
                SH<\/td>\n1.8<\/td>\n2.0<\/td>\n2.0<\/td>\n3.0<\/td>\n3.6<\/td>\n3.6<\/td>\n3.4<\/td>\n3.6<\/td>\n4.0<\/td>\n4.0<\/td>\n<\/tr>\n
                GOES-16\/18<\/td>\nNH<\/td>\n1.92<\/td>\n2.16<\/td>\n2.88<\/td>\n3.96<\/td>\n4.2<\/td>\n4.44<\/td>\n4.68<\/td>\n4.8<\/td>\n4.8<\/td>\n4.8<\/td>\n<\/tr>\n
                TR<\/td>\n1.6<\/td>\n1.8<\/td>\n2.4<\/td>\n3.3<\/td>\n3.5<\/td>\n3.7<\/td>\n3.9<\/td>\n4.0<\/td>\n4.0<\/td>\n4.0<\/td>\n<\/tr>\n
                SH<\/td>\n2.4<\/td>\n2.7<\/td>\n3.6<\/td>\n4.95<\/td>\n5.25<\/td>\n5.55<\/td>\n5.85<\/td>\n6.0<\/td>\n6.0<\/td>\n6.0<\/td>\n<\/tr>\n
                Himawari-9<\/td>\nNH<\/td>\n1.6<\/td>\n1.8<\/td>\n2.4<\/td>\n3.3<\/td>\n3.5<\/td>\n3.7<\/td>\n3.9<\/td>\n4.0<\/td>\n4.0<\/td>\n4.0<\/td>\n<\/tr>\n
                TR<\/td>\n1.4<\/td>\n1.4<\/td>\n1.4<\/td>\n2.17<\/td>\n2.45<\/td>\n2.59<\/td>\n2.73<\/td>\n2.8<\/td>\n2.8<\/td>\n2.8<\/td>\n<\/tr>\n
                SH<\/td>\n2.0<\/td>\n2.0<\/td>\n2.0<\/td>\n3.1<\/td>\n3.5<\/td>\n3.7<\/td>\n3.9<\/td>\n4.0<\/td>\n4.0<\/td>\n4.0<\/td>\n<\/tr>\n
                METOP\/NOAA<\/td>\nall<\/td>\n3.0<\/td>\n2.5<\/td>\n2.5<\/td>\n2.5<\/td>\n3.0<\/td>\n4.0<\/td>\n4.0<\/td>\n4.5<\/td>\n5.0<\/td>\n5.0<\/td>\n<\/tr>\n
                S-NPP<\/td>\nall<\/td>\n2.5<\/td>\n2.5<\/td>\n2.5<\/td>\n2.5<\/td>\n2.5<\/td>\n3.0<\/td>\n4.0<\/td>\n4.0<\/td>\n5.0<\/td>\n5.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                Error values in m\/s<\/p>\n","protected":false},"excerpt":{"rendered":"

                Use of AMVs in the DWD model Physical characteristics Global Model Non-hydrostatic grid point model using a triangular (icosahedral) grid derived from a spherical projection of an icosahedron. Horizontal resolution: 2949120 triangular cells with an average resolution of 13.2 km. Vertical resolution: 120 layers. Analysis times: 00 03 06 09 12 15 18 21 UTC. Forecast range: 7 days. Data assimilation method Global Model Type: 3D-Ensemble-Var. Errors of the day information provided by global ensemble with 26 km resolution every 3 hours blended with climatological errors (currently contributing 25%). Time window: T \u00b1 1,5 hrs. Time constraints (in UTC): Main […]<\/p>\n","protected":false},"author":19003,"featured_media":0,"parent":1312,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"class_list":["post-51887","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/51887","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/users\/19003"}],"replies":[{"embeddable":true,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/comments?post=51887"}],"version-history":[{"count":4,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/51887\/revisions"}],"predecessor-version":[{"id":51894,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/51887\/revisions\/51894"}],"up":[{"embeddable":true,"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/pages\/1312"}],"wp:attachment":[{"href":"https:\/\/nwp-saf.eumetsat.int\/site\/wp-json\/wp\/v2\/media?parent=51887"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}