Multipoint Monin-Obukhov Similarity Theory Horizontal Array Turbulence Study (M2HATS)
Étude de la turbulence de réseau horizontal basée sur la théorie de la similarité multipoint de Monin-Obukhov (M2HATS)
Tong, Chenning ; Mayor, Shane D. ; Oncley, Steven P. ; Roden, Chris ; Brown, William O. J. ; Spuler, Scott M. ; Hayman, Matthew ; Morley, Bruce M. ; Witte, Jacquelyn ; Dérian, Pierre ; Wekker, Stephan F. J. De ; Sun, Jielun ; Barskov, Kirill ; Pourabdollah, Davoud
Année de publication
2026
The atmospheric boundary layer (ABL) is the lowest portion of the atmosphere and plays a key role in many atmospheric processes. It is well known that the classic theory for the ABL for over 70 years, the Monin-Obukhov similarity theory, has significant deficiencies. A recent new theory, the multipoint Monin-Obukhov similarity theory (MMO) overcomes the deficiencies. To fully validate the new theory, the Multipoint Monin-Obukhov Similarity Horizontal Array Turbulence Studies (M2HATS) field campaign was conducted in the summer of 2023. The distinguishing aspect of the campaign is the deployment of a 245-m-long array consisting of 50 sonic anemometers, a Doppler lidar, and an aerosol lidar to provide data necessary for calculating the ring-integrated spectra, which are needed to validate the spectral prediction. A suite of other instruments including flux towers, radar profilers, sonic detection and ranging (SODAR) and radio acoustic sounding system (RASS), MicroPulse Differential Absorption Lidar (DIAL) (MPD), Doppler lidars, and a quadcopter drone were deployed to obtain the mean wind and potential temperature profiles. A detailed description of the field site and the instruments is provided. Preliminary results obtained from data analysis support the MMO. Significance Statement The theoretical foundation for the atmospheric surface layer, the Monin-Obukhov similarity theory, has been known to have significant deficiencies. The recent multipoint Monin-Obukhov similarity theory (MMO) overcomes the deficiencies. A field measurement campaign was conducted in the summer of 2023 to fully validate the new theory, in which a large suite of in situ and remote sensing instruments were deployed. Validation of MMO will have a strong impact on a wide range of applications. The comprehensive dataset can also help researchers understand the physical processes in these applications.</div>
Accès à la notice sur le site du portail documentaire de Météo-France