{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T20:23:01Z","timestamp":1776284581568,"version":"3.50.1"},"reference-count":51,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2017,11,22]],"date-time":"2017-11-22T00:00:00Z","timestamp":1511308800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"ESA-ESRIN","award":["4000117393\/16\/I-NB"],"award-info":[{"award-number":["4000117393\/16\/I-NB"]}]},{"name":"ESA-ESTEC","award":["4000119961\/16\/NL\/FF\/mg"],"award-info":[{"award-number":["4000119961\/16\/NL\/FF\/mg"]}]},{"name":"FNTP","award":["519\/FNITP\/115\/2010"],"award-info":[{"award-number":["519\/FNITP\/115\/2010"]}]},{"name":"NCN SONATA-BIS","award":["2012\/05\/E\/ST10\/01578"],"award-info":[{"award-number":["2012\/05\/E\/ST10\/01578"]}]},{"name":"EU H2020 ACTRIS-2","award":["654109 (2015e2019)"],"award-info":[{"award-number":["654109 (2015e2019)"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>During an exceptionally warm September in 2016, unique and stable weather conditions contributed to a heat wave over Poland, allowing for observations of aerosol optical properties, using a variety of ground-based and satellite remote sensors. The data set collected during 11\u201316 September 2016 was analysed in terms of aerosol transport (HYbrid Single-Particle Lagrangian Integrated Trajectory model (HYSPLIT)), aerosol load model simulations (Copernicus Atmosphere Monitoring Service (CAMS), Navy Aerosol Analysis and Prediction System (NAAPS), Global Environmental Multiscale-Air Quality (GEM-AQ), columnar aerosol load measured at ground level (Aerosol Robotic NETwork (AERONET), Polish Aerosol Research Network (PolandAOD)) and from satellites (Spinning Enhanced Visible and Infrared Imager (SEVIRI), Moderate Resolution Imaging Spectroradiometer (MODIS)), as well as with 24\/7 PollyXT Raman Lidar observations at the European Aerosol Research Lidar Network (EARLINET) site in Warsaw. Analyses revealed a single day of a relatively clean background aerosol related to an Arctic air-mass inflow, surrounded by a few days with a well increased aerosol load of differing origin: pollution transported from Germany and biomass burning from Ukraine. Such conditions proved excellent to test developed-in-house algorithms designed for near real-time aerosol optical depth (AOD) derivation from the SEVIRI sensor. The SEVIRI AOD maps derived over the territory of Poland, with an exceptionally high resolution (every 15 min; 5.5 \u00d7 5.5 km2), revealed on an hourly scale, very low aerosol variability due to heat wave conditions. Comparisons of SEVIRI with NAAPS and CAMS AOD maps show strong qualitative similarities; however, NAAPS underestimates AOD and CAMS tends to underestimate it on relatively clean days (&lt;0.2), and overestimate it for a high aerosol load (&gt;0.4). A slight underestimation of the SEVIRI AOD is reported for pixel-to-column comparisons with AODs of several radiometers (AERONET, PolandAOD) and Lidar (EARLINET) with high correlation coefficients (r2 of 0.8\u20130.91) and low root-mean-square error (RMSE of 0.03\u20130.05). A heat wave driven increase of the boundary layer height of 10% is accompanied with the AOD increase of 8\u201312% for an urban site dominated by anthropogenic pollution. Contrary trend, with an AOD decrease of around 4% for a rural site dominated by a long-range transported biomass burning aerosol is reported. There is a positive feedback of heat wave conditions on local and transported pollution and an extenuating effect on transported biomass burning aerosol. The daytime mean SEVIRI PM2.5 converted from the SEVIRI AODs at a pixel representative for Warsaw is in agreement with the daily mean PM2.5 surface measurements, whereby SEVIRI PM2.5 and Lidar-derived \u00c5ngstr\u00f6m exponent are anti-correlated.<\/jats:p>","DOI":"10.3390\/rs9111199","type":"journal-article","created":{"date-parts":[[2017,11,22]],"date-time":"2017-11-22T10:47:38Z","timestamp":1511347658000},"page":"1199","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":32,"title":["Effect of Heat Wave Conditions on Aerosol Optical Properties Derived from Satellite and Ground-Based Remote Sensing over Poland"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3890-2953","authenticated-orcid":false,"given":"Iwona","family":"Stachlewska","sequence":"first","affiliation":[{"name":"Faculty of Physics, Institute of Geophysics, University of Warsaw, 02-093 Warsaw, Poland"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8751-3914","authenticated-orcid":false,"given":"Olga","family":"Zawadzka","sequence":"additional","affiliation":[{"name":"Faculty of Physics, Institute of Geophysics, University of Warsaw, 02-093 Warsaw, Poland"}]},{"given":"Ronny","family":"Engelmann","sequence":"additional","affiliation":[{"name":"Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2017,11,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"6373","DOI":"10.5194\/acp-13-6373-2013","article-title":"Could aerosol emissions be used for regional heat wave mitigation?","volume":"13","author":"Bernstein","year":"2013","journal-title":"Atmos. 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