Home Who We Are What We Do Products Research Library Since 1983, Simpson Weather Associates has been funded by NASA, NOAA, U.S. DoD, CNRS, Lockheed, General Electric, Northrop Grumman and Ball Aerospace to develop simulation models for space-based and airborne Doppler lidar wind measuring systems, Scatterometter instruments and Cloud Motion Vector Wind Model algorithms. Space-based and Airborne System DWL Simulation Models * Graphic based upon image created at NASA/LaRC The Doppler Lidar Simulation Model (DLSM) is an evolution of existing Doppler lidar simulation models that are currently used for spaced-based and airborne Doppler lidar wind simulations. The DLSM provides an interactive simulation that allows a user to address issues ranging from lidar system trade studies to global numerical model assimilation and impact studies with an emphasis on sampling in cloudy environments. DLSM version 4.4 Technical Manual (pdf) * Graphic based upon image created at NASA/LaRC Planetary winds have implications to understanding planetary weather and planetary exploration. In the case of Mars, the interplay between winds, dust storms and the radiative feedback is critical to the prediction of operational meteorology but remains poorly understood. The Mars Lidar Simulation Model (MLSM)is a simulation model that is intended to help develop several lidar concepts that would provide critical observations of winds, aerosols and gases on Mars. MLSM Version 1.0 Technical manual (pdf) The Scatterometer Simulation Model (ScattrSM) produces simulated Ocean wind speeds and directions at 10 M using ECMWF or AOML Nature Runs. Current supported scatterometers are QuikScat (25 km resolution) - Ku band and ASCAT (50 km resolution) - C band. Scatterometer Simulation Model (ScattrSM). Simpson Weather Associates Note, Oct. 2012. (pdf) The Cloud Motion Vector (CMV) algorithm simulates cloud track winds from ECMWF and AOML WRF Nature Runs for Observation System Simulation Experiments. Simulated Cloud motion Winds (CMW) are produced for all geosynchronous satellites in an area extending 60 from the sub-point. Cloud Motion Wind Vector Algorithm. Simpson Weather Associates Note, Oct. 2012. (pdf) Further Development of an Algorithm For Simulating Cloud Motion Vectors From Global Circulation Model Data, Simpson Weather Associates report, Sept. 2002. (pdf) Simulating Cloud Motion Vectors From Global Circulation Model Data For Use in OSSEs: A Preliminary, But Useful, Algorithm For Application to Current NASA/NOAA OSSE Projects, Simpson Weather Associates report, Oct. 2001. (pdf) CONTACTS G. D. Emmitt gde@swa.com S. A. Wood saw@swa.com S. Greco sxg@swa.com © Simpson Weather Associates 1980 - 2021 809 East Jefferson St. Charlottesville, VA 22902 Phone: (434) 979-3571 Fax: (434) 979-5599 Back to top