تقرير
Chemical Transport Models Often Underestimate Inorganic Atmospheric Aerosol Acidity in Remote Regions of the Atmosphere
| العنوان: | Chemical Transport Models Often Underestimate Inorganic Atmospheric Aerosol Acidity in Remote Regions of the Atmosphere |
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| المؤلفون: | Benjamin A Nault, Pedro Campuzano-Jost, Douglas A Day, Duseong S Jo, Jason C Schroder, Hannah M Allen, Roya Bahreini, Huisheng Bian, Donald R Blake, Mian Chin, Simon L Clegg, Peter R Colarco, John D Crounse, Michael J Cubison, Peter F DeCarlo, Jack E Dibb, Glenn S Diskin, Alma Hodzic, Weiwei Hu, Joseph M Katich, Michelle J Kim, John K Kodros, Agnieszka Kupc, Felipe D Lopez-Hilfiker, Eloise A Marais, Ann M Middlebrook, J Andrew Neuman, John B Nowak, Brett B Palm, Fabien Paulot, Jeffrey R Pierce, Gregory P Schill, Eric Scheuer, Joel A Thornton, Kostas Tsigaridis, Paul O Wennberg, Christina J Williamson, Jose L Jimenez |
| المصدر: | Communications Earth & Environment. 2 |
| بيانات النشر: | United States: NASA Center for Aerospace Information (CASI), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Geophysics |
| الوصف: | The inorganic fraction of fine particles affects numerous physicochemical processes in the atmosphere. However, there is large uncertainty in its burden and composition due to limited global measurements. Here, we present observations from eleven different aircraft campaigns from around the globe and investigate how aerosol pH and ammonium balance change from polluted to remote regions, such as over the oceans. Both parameters show increasing acidity with remoteness, at all altitudes, with pH decreasing from about 3 to about -1 and ammonium balance decreasing from almost 1 to nearly 0. We compare these observations against nine widely used chemical transport models and find that the simulations show more scatter (generally R(exp 2) < 0.50) and typically predict less acidic aerosol in the most remote regions. These differences in observations and predictions are likely to result in underestimating the model-predicted direct radiative cooling effect for sulfate, nitrate, and ammonium aerosol by 15-39%. |
| نوع الوثيقة: | Report |
| اللغة: | English |
| تدمد: | 2662-4435 |
| DOI: | 10.1038/s43247-021-00164-0 |
| URL الوصول: | https://ntrs.nasa.gov/citations/20220003129 |
| ملاحظات: | 281945.02.31.03.61 NNX15AH33A NNX15AJ23G 80NSSC19K0124 80NSSC18K0630 NNX15AG61A NSF 1360745 NSF 1652688 DOE DE-SC0016559 |
| رقم الأكسشن: | edsnas.20220003129 |
| قاعدة البيانات: | NASA Technical Reports |
Full Text Finder | تدمد: | 26624435 |
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| DOI: | 10.1038/s43247-021-00164-0 |