دورية أكاديمية
Satellite Limb Observations of Unprecedented Forest Fire Aerosol in the Stratosphere
| العنوان: | Satellite Limb Observations of Unprecedented Forest Fire Aerosol in the Stratosphere |
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| المؤلفون: | Bourassa, Adam E., Rieger, Landon A., Zawada, Daniel J., Khaykin, Sergey, Thomason, L. W., Degenstein, Doug A. |
| المساهمون: | Institute of Space and Atmospheric Studies Saskatoon (ISAS), Department of Physics and Engineering Physics Saskatoon, University of Saskatchewan Saskatoon, Canada (U of S)-University of Saskatchewan Saskatoon, Canada (U of S), STRATO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), NASA Langley Research Center Hampton (LaRC) |
| المصدر: | ISSN: 2169-897X ; EISSN: 2169-8996. |
| بيانات النشر: | HAL CCSD American Geophysical Union |
| سنة النشر: | 2019 |
| المجموعة: | Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| مصطلحات موضوعية: | aerosol, wildfire, stratosphere, satellite, limb, SAGE, OSIRIS, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
| الوصف: | International audience ; Intense forest fires in western North America during August 2017 caused smoke plumes that reached the stratosphere. While this phenomenon has often been observed, this particular event caused increases in stratospheric aerosol extinction at higher altitudes with greater magnitude than previously observed in the satellite record. Here we use multiple satellite limb sounding observations, which provide high sensitivity to thin aerosol layers and good vertical resolution, to show that enhancements in aerosol extinction from the fires reached as high as 23 km in altitude and persisted for more than 5 months. Within 1 month, the aerosol is observed to cover latitudes from 20°N to 60°N, which is essentially the northernmost limit of the observations. At midlatitudes between 15‐ and 20‐km altitudes, the sustained level of median aerosol extinction measured at 750 nm increased by almost an order of magnitude, from approximately 10−4 km−1 to nearly 10−3 km−1. Agreement between limb scatter and occultation measurements is generally within 20% despite potential bias due to modified aerosol shape and composition. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | insu-03024972; https://insu.hal.science/insu-03024972Test; https://insu.hal.science/insu-03024972/documentTest; https://insu.hal.science/insu-03024972/file/2019JD030607.pdfTest |
| DOI: | 10.1029/2019JD030607 |
| الإتاحة: | https://doi.org/10.1029/2019JD030607Test https://insu.hal.science/insu-03024972Test https://insu.hal.science/insu-03024972/documentTest https://insu.hal.science/insu-03024972/file/2019JD030607.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.1CEBCC54 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1029/2019JD030607 |
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