Evaluating Mixing Height Estimations in the Western United States Using Satellite Observations
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Published:2023-03-21
Issue:
Volume:
Page:24-32
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ISSN:2325-6184
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Container-title:Journal of Operational Meteorology
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language:en
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Short-container-title:J. Operational Meteor.
Author:
Wright Christopher1, Berkowitz Dean1, Liu Julia1, Mock Lauren1, Nisbet-Wilcox Brandy1, Ross Kenton2, Toth Travis2, Weber Keith3
Affiliation:
1. NASA DEVELOP National Program, Pocatello, ID 2. NASA Langley Research Center, Hampton, VA 3. Idaho State University, Pocatello, ID
Abstract
Wildfire smoke can be transported far from its origin, adversely impacting human health. The height of the atmospheric mixing layer, the near-surface layer of the troposphere in which turbulent convection leads to vertical mixing, is called the mixing height. Mixing height is a critical input in the smoke dispersion and air quality models used by agencies that monitor wildfires and air pollution. These models, coupled with forecaster expertise, are also used to determine if it is safe to execute a prescribed burn. In this paper, we derive mixing heights from two satellite datasets in order to assess mixing height forecasts produced by the National Weather Service (NWS) Fire Weather Program. Namely, we use Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) Vertical Feature Masks (VFM) and vertical water vapor profiles from the Moderate Resolution Imaging Spectroradiometer (MODIS). Our comparison indicates that NWS forecasts tend to underestimate CALIOP mixing heights with a median relative error of –13% and a mean relative error of –3.34%. Although MODIS and NWS mixing heights showed some agreement below 3 km, the lower vertical resolution of the MODIS estimates hindered a full comparison. We examine the discrepancies among mixing heights over wildfire smoke plumes determined by these methods and discuss biases and limitations. This work provides insight into potential bias patterns present in current mixing height forecasts and provides directions for future improvements in both NWS mixing height forecasts and satellite-based measurements of mixing height.
Publisher
National Weather Association
Subject
Management Science and Operations Research,Atmospheric Science,Computers in Earth Sciences
Reference24 articles.
1. Amiridis, V., Giannakaki, E., Balis, D. S., Gerasopoulos, E., Pytharoulis, I., Zanis, P., Kazadzis, S., Melas, D., and Zerefos, C., 2010: Smoke injection heights from agricultural burning in Eastern Europe as seen by CALIPSO. Atmospheric Chemistry and Physics, 10, 11567–11576, CrossRef. 2. Borbas, E. E., S. Seemann, Z. Li, J. Li, A. Kern, and W. P. Menzel, 2016: MODIS Atmosphere Profiles Product (07_L2). NASA MODIS Adaptive Processing System, Goddard Space Flight Center. [Available online at http://dx.doi.org/10.5067/MODIS/MOD07_L2.006(Terra) http://dx.doi.org/10.5067/MODIS/MYD07_L2.006 (Aqua).] 3. Craven, J. P., D. E. Rudack, and P. E. Shafer, 2020: National Blend of Models: a statistically post-processed multimodel ensemble. J. Operational Meteorology, 8 (1), 1–14, CrossRef. 4. Dennison, P. E., S. C. Brewer, J. D. Arnold, and M. A. Moritz, 2014: Large wildfire trends in the western United States, 1984–2011. Geophysical Research Letters, 41, 2928–2933. 5. Fearon, M. G., T. J. Brown, and G. M. Curcio, 2015: Establishing a national standard method for operational mixing height determination. J. Operational Meteor., 3, 172–189, CrossRef.
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