Optimized Estimation of Surface Layer Characteristics from Profiling Measurements
MetadataShow full item record
New sampling techniques such as tethered-balloon-based measurements or small unmanned aerial vehicles are capable of providing multiple profiles of the Marine Atmospheric Surface Layer (MASL) in a short time period. It is desirable to obtain surface fluxes from these measurements, especially when direct flux measurements are difficult to obtain. The profiling data is different from the traditional mean profiles obtained at two or more fixed levels in the surface layer from which surface fluxes of momentum, sensible heat, and latent heat are derived based on Monin-Obukhov Similarity Theory (MOST). This research develops an improved method to derive surface fluxes and the corresponding MASL mean profiles of wind, temperature, and humidity with a least-squares optimization method using the profiling measurements. This approach allows the use of all available independent data. We use a weighted cost function based on the framework of MOST with the cost being optimized using a quasi-Newton method. This approach was applied to seven sets of data collected from the Monterey Bay. The derived fluxes and mean profiles show reasonable results. An empirical bias analysis is conducted using 1000 synthetic datasets to evaluate the robustness of the method.
The article of record as published may be found at http://dx.doi.org/10.3390/atmos7020014
Showing items related by title, author, creator and subject.
Misztal, P.K.; Karl, T.; Weber, R.; Jonsson, H.H.; Guenther, A.B.; Goldstein, A.H. (2014);Biogenic isoprene fluxes were measured onboard the CIRPAS Twin Otter aircraft as part of the California Airborne Biogenic volatile organic compound (BVOC) Emission Research in Natural Ecosystem Transects (CABERNET) campaign ...
Tellado, Pamela A. (Monterey, California: Naval Postgraduate School, 2013-09);The objective of this thesis was to perform the initial analysis of aircraft measurements from the field campaign of the Unified Physical Parameterization for Extended Forecast (UPPEF 2012). We examined the general ...
Characterizing the effects of convection on the afternoon-to-evening boundary layer transition during PECAN 2015 Eberle, Geoffry R. (Monterey, California: Naval Postgraduate School, 2016-12);The Great Plains exhibits a widely known characteristic transition in the atmospheric boundary layer, from a daytime unstable boundary layer to a nocturnal stable boundary layer near sunset. There remains much to learn ...