Developing the configuration trade space for space-based DWLs: vertical and horizontal coverage G. D. Emmitt, S. A. Wood and S. Greco Simpson Weather Associates.

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Presentation transcript:

Developing the configuration trade space for space-based DWLs: vertical and horizontal coverage G. D. Emmitt, S. A. Wood and S. Greco Simpson Weather Associates S. Majumdar (U Miami) and R. Atlas (NOAA/AOML) Wind Lidar Working Group Meeting Boulder, 2015

Overview NASA has funded a data impact trade study through its ROSES-13 program: CYGNSS related call Directed at Doppler Wind Lidars Explore synergisms between AMVs, OVWs and future DWL products. Technology neutral in details Issues to be addressed Swath vs lesser horizontal coverage Upper vs lower troposphere coverage Concentrated precision vs sample distribution (equal resources) Temporal revisit interval benefits (GEO vs. LEO?) Cost vs. benefit study Cost expressed in terms of mission complexity Benefit expressed in terms of OSSE impact metrics

The Nature Run Nature Runs T511 provided by ECMWF WRF provided by NOAA 27,9,3,1 km nested domains A hurricane case in August Model cloud issues T511 reports much greater cloud coverage than the WRF does Plan to adjust the WRF cloud coverage post NR generation.

WRF MESOSCALE NR – Nested Grids (27, 9, 3 and 1 km) Polar orbiting satellite ground track

WRF MESOSCALE NR 8/04/12Z – Domain 1 Cloud Fraction Level 10

WRF MESOSCALE NR 8/04/12Z – Domain 2 Cloud Fraction Level 10

WRF MESOSCALE NR 8/04/12Z – Domain 3 Cloud Fraction Level 10

WRF MESOSCALE NR 8/04/12Z – Domain 4 Cloud Fraction Level 10

Nature Run Cloud Coverage Issues

The “reference” sampling case

Summary Cloud free DWL-like product simulations for 10 days have been completed for predictability reference experiments Adjustment schemes to WRF NR clouds are being discussed and evaluated Trade studies will be performed as described by Bob Atlas in previous presentation