{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T00:57:15Z","timestamp":1760230635880,"version":"build-2065373602"},"reference-count":51,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,8,5]],"date-time":"2022-08-05T00:00:00Z","timestamp":1659657600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>While pollen is expected to impact public human health and the Earth\u2019s climate more and more in the coming decades, lidar remote sensing of pollen has become an important developing research field. To differentiate among the pollen taxa, a polarization lidar is an interesting tool since pollen exhibit non-spherical complex shapes. A key attribute is thus the lidar particle depolarization ratio (PDR) of pollen, which is however difficult to quantify as pollen are large and complex-shaped particles, far beyond the reach of light scattering numerical simulations. In this paper, a laboratory \u03c0-polarimeter is used to accurately evaluate the PDR of pure pollen, for the first time at the lidar exact backscattering angle of 180.0\u00b0. We hence reveal the lidar PDR of pure ragweed, ash, birch, pine, cypress and spruce pollens at 355 and 532 nm lidar wavelengths, as presented at the ELC 2021 conference. A striking result is the spectral dependence of the lidar PDR, highlighting the importance of dual-wavelength (or more) polarization lidars to identify pollen taxa. These spectral and polarimetric fingerprints of pure pollen, as they are accurate, can be used by the lidar community to invert multi-wavelength lidar polarization measurements involving pollen.<\/jats:p>","DOI":"10.3390\/rs14153767","type":"journal-article","created":{"date-parts":[[2022,8,9]],"date-time":"2022-08-09T04:16:55Z","timestamp":1660018615000},"page":"3767","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Laboratory Evaluation of the (355, 532) nm Particle Depolarization Ratio of Pure Pollen at 180.0\u00b0 Lidar Backscattering Angle"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2358-3467","authenticated-orcid":false,"given":"Dana\u00ebl","family":"Cholleton","sequence":"first","affiliation":[{"name":"Institut Lumi\u00e8re Mati\u00e8re, Universit\u00e9 Claude Bernard Lyon 1, University of Lyon, CNRS, 69622 Villeurbanne, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8446-347X","authenticated-orcid":false,"given":"Patrick","family":"Rairoux","sequence":"additional","affiliation":[{"name":"Institut Lumi\u00e8re Mati\u00e8re, Universit\u00e9 Claude Bernard Lyon 1, University of Lyon, CNRS, 69622 Villeurbanne, France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1296-2349","authenticated-orcid":false,"given":"Alain","family":"Miffre","sequence":"additional","affiliation":[{"name":"Institut Lumi\u00e8re Mati\u00e8re, Universit\u00e9 Claude Bernard Lyon 1, University of Lyon, CNRS, 69622 Villeurbanne, France"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,5]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1745","DOI":"10.1038\/s41467-020-15586-1","article-title":"Biological weed control to relieve millions from Ambrosia allergies in Europe","volume":"11","author":"Schaffner","year":"2020","journal-title":"Nat. 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