FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2967262801> ?p ?o ?g. }

• W2967262801 endingPage "15466" @default.
• W2967262801 startingPage "15447" @default.
• W2967262801 abstract "Abstract. With low concentrations of tropospheric aerosol, the Southern Ocean offers a “natural laboratory” for studies of aerosol–cloud interactions. Aerosols over the Southern Ocean are produced from biogenic activity in the ocean, which generates sulfate aerosol via dimethylsulfide (DMS) oxidation, and from strong winds and waves that lead to bubble bursting and sea spray emission. Here, we evaluate the representation of Southern Ocean aerosols in the Hadley Centre Global Environmental Model version 3, Global Atmosphere 7.1 (HadGEM3-GA7.1) chemistry–climate model. Compared with aerosol optical depth (AOD) observations from two satellite instruments (the Moderate Resolution Imaging Spectroradiometer, MODIS-Aqua c6.1, and the Multi-angle Imaging Spectroradiometer, MISR), the model simulates too-high AOD during winter and too-low AOD during summer. By switching off DMS emission in the model, we show that sea spray aerosol is the dominant contributor to AOD during winter. In turn, the simulated sea spray aerosol flux depends on near-surface wind speed. By examining MODIS AOD as a function of wind speed from the ERA-Interim reanalysis and comparing it with the model, we show that the sea spray aerosol source function in HadGEM3-GA7.1 overestimates the wind speed dependency. We test a recently developed sea spray aerosol source function derived from measurements made on a Southern Ocean research voyage in 2018. In this source function, the wind speed dependency of the sea spray aerosol flux is less than in the formulation currently implemented in HadGEM3-GA7.1. The new source function leads to good agreement between simulated and observed wintertime AODs over the Southern Ocean; however, it reveals partially compensating errors in DMS-derived AOD. While previous work has tested assumptions regarding the seawater climatology or sea–air flux of DMS, we test the sensitivity of simulated AOD, cloud condensation nuclei and cloud droplet number concentration to three atmospheric sulfate chemistry schemes. The first scheme adds DMS oxidation by halogens and the other two test a recently developed sulfate chemistry scheme for the marine troposphere; one tests gas-phase chemistry only, while the second adds extra aqueous-phase sulfate reactions. We show how simulated sulfur dioxide and sulfuric acid profiles over the Southern Ocean change as a result and how the number concentration and particle size of the soluble Aitken, accumulation and coarse aerosol modes are affected. The new DMS chemistry scheme leads to a 20 % increase in the number concentration of cloud condensation nuclei and cloud droplets, which improves agreement with observations. Our results highlight the importance of atmospheric chemistry for simulating aerosols and clouds accurately over the Southern Ocean." @default.
• W2967262801 created "2019-08-22" @default.
• W2967262801 creator A5007117541 @default.
• W2967262801 creator A5023882108 @default.
• W2967262801 creator A5036833537 @default.
• W2967262801 creator A5045872079 @default.
• W2967262801 creator A5060102447 @default.
• W2967262801 creator A5063271142 @default.
• W2967262801 creator A5065012173 @default.
• W2967262801 creator A5077764002 @default.
• W2967262801 creator A5078572776 @default.
• W2967262801 creator A5079927174 @default.
• W2967262801 creator A5083510400 @default.
• W2967262801 date "2019-12-17" @default.
• W2967262801 modified "2023-10-16" @default.
• W2967262801 title "The sensitivity of Southern Ocean aerosols and cloud microphysics to sea spray and sulfate aerosol production in the HadGEM3-GA7.1 chemistry–climate model" @default.
• W2967262801 cites W109840045 @default.
• W2967262801 cites W1513196349 @default.
• W2967262801 cites W1519530116 @default.
• W2967262801 cites W1543889204 @default.
• W2967262801 cites W1545674413 @default.
• W2967262801 cites W1595360411 @default.
• W2967262801 cites W1608902004 @default.
• W2967262801 cites W1616087035 @default.
• W2967262801 cites W1637244524 @default.
• W2967262801 cites W1761972788 @default.
• W2967262801 cites W1792159225 @default.
• W2967262801 cites W1931285069 @default.
• W2967262801 cites W1965364305 @default.
• W2967262801 cites W1968340782 @default.
• W2967262801 cites W1977191205 @default.
• W2967262801 cites W1984140832 @default.
• W2967262801 cites W1992634355 @default.
• W2967262801 cites W1994806934 @default.
• W2967262801 cites W1996482397 @default.
• W2967262801 cites W1999506626 @default.
• W2967262801 cites W2004475355 @default.
• W2967262801 cites W2007791627 @default.
• W2967262801 cites W2007936903 @default.
• W2967262801 cites W2008016796 @default.
• W2967262801 cites W2010545306 @default.
• W2967262801 cites W2012832111 @default.
• W2967262801 cites W2015071544 @default.
• W2967262801 cites W2023282295 @default.
• W2967262801 cites W2024612183 @default.
• W2967262801 cites W2027715960 @default.
• W2967262801 cites W2029222580 @default.
• W2967262801 cites W2032848139 @default.
• W2967262801 cites W2033718180 @default.
• W2967262801 cites W2037568311 @default.
• W2967262801 cites W2041543684 @default.
• W2967262801 cites W2048512417 @default.
• W2967262801 cites W2063359930 @default.
• W2967262801 cites W2063538315 @default.
• W2967262801 cites W2067836187 @default.
• W2967262801 cites W2068106641 @default.
• W2967262801 cites W2068213435 @default.
• W2967262801 cites W2070348652 @default.
• W2967262801 cites W2074744794 @default.
• W2967262801 cites W2081200609 @default.
• W2967262801 cites W2082044274 @default.
• W2967262801 cites W2083128385 @default.
• W2967262801 cites W2089433206 @default.
• W2967262801 cites W2092300237 @default.
• W2967262801 cites W2092986057 @default.
• W2967262801 cites W2094690852 @default.
• W2967262801 cites W2098065523 @default.
• W2967262801 cites W2098643429 @default.
• W2967262801 cites W2104155220 @default.
• W2967262801 cites W2106963750 @default.
• W2967262801 cites W2107669035 @default.
• W2967262801 cites W2120943354 @default.
• W2967262801 cites W2121745948 @default.
• W2967262801 cites W2125569860 @default.
• W2967262801 cites W2128562926 @default.
• W2967262801 cites W2138461968 @default.
• W2967262801 cites W2142416981 @default.
• W2967262801 cites W2145318668 @default.
• W2967262801 cites W2155704085 @default.
• W2967262801 cites W2156322683 @default.
• W2967262801 cites W2157203601 @default.
• W2967262801 cites W2159172550 @default.
• W2967262801 cites W2159443068 @default.
• W2967262801 cites W2165258746 @default.
• W2967262801 cites W2169573491 @default.
• W2967262801 cites W2204838419 @default.
• W2967262801 cites W2230007037 @default.
• W2967262801 cites W2327163955 @default.
• W2967262801 cites W2337530110 @default.
• W2967262801 cites W2381100706 @default.
• W2967262801 cites W2509117736 @default.
• W2967262801 cites W2527266472 @default.
• W2967262801 cites W2533758836 @default.
• W2967262801 cites W2569996388 @default.
• W2967262801 cites W2605772517 @default.
• W2967262801 cites W2619413836 @default.
• W2967262801 cites W2725710604 @default.
• W2967262801 cites W2728475168 @default.

• next