Presence of Longitudinal Roll Structures during Synoptic Forced Conditions in Complex Terrain

Payne, Cory M.; Passner, Jeffrey E.; Dumais, Robert E.; Abdelkefi, Abdessattar; Hocut, C. M.

doi:10.3390/atmos12060737

Cited by 4 publications

(3 citation statements)

References 39 publications

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“…The measurement site is indicated as a blue and white circle on both maps in Figure 1 (intermediate scale maps are also shown in Section 3.3). The measurement location is part of the US Combat Capabilities Development Command (DEVCOM) Multipurpose Sensor Array (MSA) 47 . All power was provided by a solar panel and battery bank.…”

Section: Methodsmentioning

confidence: 99%

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Atmospheric aerosol particles before, during, and after a convective dust event on the Jornada experimental range as measured using Raman hyperspectral imaging

Doughty

Dumais

Richman

et al. 2023

J Raman Spectroscopy

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The effects of winds and local mineralogy on ambient aerosol composition are poorly understood. We measured the Raman spectra (RS) of ambient aerosol particles on the Jornada Experimental Range, a desert location in southern New Mexico, used these RS to group spectra by composition or spectral features, and compared the numbers of RS with the winds and minerology. An aerosol Raman hyperspectral imager was used to collect particles onto a tape and measure a hyperspectral Raman image in 15‐ or 20‐min intervals. Over a 48 h period, 6306 RS were above the thresholds used and were analyzed further. Multiple RS may originate from the same particle. Of these 6306 RS, 2567 were classified as luminescence; 2647 contained the D and G peaks of DG Carbon (DGC, which includes soots, black carbon, and similar materials); 43 exhibited peaks consistent with CH stretching; and 130, 102, and 29 RS were consistent with quartz, carbonates (calcite and dolomite), and potassium feldspar, respectively. A convective dust event was concurrent with an increase in the number of RS of luminescent particles >20X the median; numbers of DGC RS in the interquartile range of DGC for the entire measurement period; RS consistent with quartz, calcite, iron oxides, feldspar, and anatase; and no RS consistent with oxalates or nitrates. This work shows that hyperspectral Raman imaging can help understand the time‐dependent composition of ambient aerosol particles at time resolutions below an hour.

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Section: Methodsmentioning

confidence: 99%

“…The measurement location is part of the US Combat Capabilities Development Command (DEVCOM) Multipurpose Sensor Array (MSA). 47 All power was provided by a solar panel and battery bank. A photograph of the site is in Figure S1.…”

Section: Measurement Location and Meteorological Datamentioning

confidence: 99%

Atmospheric aerosol particles before, during, and after a convective dust event on the Jornada experimental range as measured using Raman hyperspectral imaging

Doughty

Dumais

Richman

et al. 2023

J Raman Spectroscopy

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“…Given the region's geographical characteristics, downscaling presents a significant challenge with a peninsular area dominated by the Apennine Mountain range, featuring uneven surfaces, diverse land use, and numerous coastal areas where local thermal and mechanical orographic processes strongly influence wind fields. Thus, local circulation features are often triggered, such as slope winds, mountain-valley p. 3/28 breezes, land-sea breezes, and flow splitting by mountains, or channeling in valleys, with spatial scales reaching the microscale (1 km or less) [38]. This paper is organized into five sections.…”

Section: Introductionmentioning

confidence: 99%

Wind Speed Downscaling of the WRF Model at Subkilometer Scale in Complex Terrain for Wind Power Applications

Paola,

Cimini,

De Natale

et al. 2024

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Mesoscale Numerical Weather Prediction Models (NWPMs) are frequently utilized for wind speed analysis and forecasting in the planning and supporting of wind power generation. However, high computational costs only allow for routine use up to kilometer scale which is sometimes too coarse to support onshore wind power generation in areas with complex orography. To address this, an algorithm was developed in southern Italy to downscale the wind fields output using the Weather Research and Forecasting (WRF) model for the first 250 meters above ground level. The algorithm is based on Artificial Neural Networks (ANNs) and uses the WRF model outputs on a 1.2 km regular grid, and the land surface height and orientation on a 240 m regular grid to downscale wind fields to a 240 m regular grid. To train the ANNs, a WRF simulation dataset in Large Eddy Simulation (LES) mode was developed. Particular attention was paid to defining the ANN architectures and analyzing inputs to mitigate overfitting risk while maintaining manageable computation costs. The evaluation of outcomes conducted using an independent test datasets from WRF-LES simulations reveals that the wind speed Root Mean Square Difference (RMSD) is 0.5 m/s over land and 0.2 m/s over the sea surface, respectively, at a spatial resolution of approximately 800 m. These figures are lower than the RMSD values of 1.6 m/s over land and 1.0 m/s over the sea surface, accompanied by a spatial resolution of 1.8 km, which were obtained through comparison with the Spline interpolation method. 1

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Green Heat and Wind Factors in Sustainable Urban Development of Mountain-Basin Relief

Shukurov,

Olimova,

Shukurova

et al. 2024

E3S Web Conf.

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The article studies mountain basin relief’s influence on the heat and wind regime organization when developing it for sustainable urban planning purposes. Each time a unique relief is identified, it requires an individual design approach taking into account the identification of the aesthetic expressiveness of green settlement development. Depending on the slope, there may be different options for using the site. The article presents the features of the geometry of the mountain-basin space associated with the relative depth of the mountain basin. The thermal field of the mountain-basin space, which is formed due to the energy of incoming solar radiation and the internal heat of insolated urban development, is analyzed. The city’s mountain-basin terrain requires an individual design approach, taking into account the identification of the aesthetic expressiveness of green settlement development. Based on the generalization and analysis of studies of air flows’ structure, their direction, velocity, and temperature fields, as well as the characteristics of the microclimate in the development of the mountain-basin space, an aerodynamic picture of air movement arising under the influence of natural thermal forces was obtained. The thermal field of the mountain-basin space has been established, which is formed due to the energy of incoming solar radiation and the internal heat of insolated urban development. The proposed methodology for calculating the heat and wind conditions of development is the basis for preliminary forecasting, assessment, and regulation of heat and wind parameters, as well as optimization of the sustainable development planning of mountain-basin relief.

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Presence of Longitudinal Roll Structures during Synoptic Forced Conditions in Complex Terrain

Cited by 4 publications

References 39 publications

Atmospheric aerosol particles before, during, and after a convective dust event on the Jornada experimental range as measured using Raman hyperspectral imaging

Atmospheric aerosol particles before, during, and after a convective dust event on the Jornada experimental range as measured using Raman hyperspectral imaging

Wind Speed Downscaling of the WRF Model at Subkilometer Scale in Complex Terrain for Wind Power Applications

Green Heat and Wind Factors in Sustainable Urban Development of Mountain-Basin Relief

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