FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4381569264> ?p ?o ?g. }

• W4381569264 endingPage "5943" @default.
• W4381569264 startingPage "5929" @default.
• W4381569264 abstract "Abstract. This study focuses on the distribution of hydrogen peroxide (H2O2) in the upper tropical troposphere at altitudes between 8 and 15 km based on in situ observations during the Chemistry of the Atmosphere: Field Experiment in Africa (CAFE-Africa) campaign conducted in August–September 2018 over the tropical Atlantic Ocean and western Africa. The measured hydrogen peroxide mixing ratios in the upper troposphere show no clear trend in the latitudinal distribution with locally increased levels (up to 1 ppbv​​​​​​​) within the Intertropical Convergence Zone (ITCZ), over the African coastal area, as well as during measurements performed in proximity to the tropical storm Florence (later developing into a hurricane). The observed H2O2 distribution suggests that mixing ratios in the upper troposphere seem to be far less dependent on latitude than assumed previously and the corresponding factors influencing the photochemical production and loss of H2O2. The observed levels of H2O2 in the upper troposphere indicate the influence of convective transport processes on the distribution of the species not only in the tropical but also in the subtropical regions. The measurements are compared to observation-based photostationary steady-state (PSS) calculations and numerical simulations by the global ECHAM/MESSy Atmospheric Chemistry (EMAC) model. North of the ITCZ, PSS calculations produce mostly lower H2O2 mixing ratios relative to the observations. The observed mixing ratios tend to exceed the PSS calculations by up to a factor of 2. With the exception of local events, the comparison between the calculated PSS values and the observations indicates enhanced H2O2 mixing ratios relative to the expectations based on PSS calculations in the north of the ITCZ. On the other hand, PSS calculations tend to overestimate the H2O2 mixing ratios in most of the sampled area in the south of the ITCZ by a factor of up to 3. The significant influence of convection in the ITCZ and the enhanced presence of clouds towards the Southern Hemisphere indicate contributions of atmospheric transport and cloud scavenging in the sampled region. Simulations performed by the EMAC model also overestimate hydrogen peroxide levels particularly in the Southern Hemisphere, most likely due to underestimated cloud scavenging. EMAC simulations and PSS calculations both indicate a latitudinal gradient from the Equator towards the subtropics. In contrast, the measurements show no clear gradient with latitude in the mixing ratios of H2O2 in the upper troposphere with a slight decrease from the ITCZ towards the subtropics, indicating a relatively low dependency on the solar radiation intensity and the corresponding photolytic activity. The largest model deviations relative to the observations correspond with the underestimated hydrogen peroxide loss due to enhanced cloud presence, scavenging, and rainout in the ITCZ and towards the south." @default.
• W4381569264 created "2023-06-22" @default.
• W4381569264 creator A5007772091 @default.
• W4381569264 creator A5018820094 @default.
• W4381569264 creator A5023787844 @default.
• W4381569264 creator A5027329208 @default.
• W4381569264 creator A5030912248 @default.
• W4381569264 creator A5031490488 @default.
• W4381569264 creator A5035336709 @default.
• W4381569264 creator A5036008616 @default.
• W4381569264 creator A5066698734 @default.
• W4381569264 creator A5074533906 @default.
• W4381569264 creator A5079374676 @default.
• W4381569264 creator A5081741117 @default.
• W4381569264 date "2023-05-30" @default.
• W4381569264 modified "2023-10-18" @default.
• W4381569264 title "Measurement report: Hydrogen peroxide in the upper tropical troposphere over the Atlantic Ocean and western Africa during the CAFE-Africa aircraft campaign" @default.
• W4381569264 cites W1690787865 @default.
• W4381569264 cites W1968402337 @default.
• W4381569264 cites W1969852558 @default.
• W4381569264 cites W1975585929 @default.
• W4381569264 cites W1978153810 @default.
• W4381569264 cites W1979451926 @default.
• W4381569264 cites W1990159165 @default.
• W4381569264 cites W1994145659 @default.
• W4381569264 cites W1997946686 @default.
• W4381569264 cites W2003474275 @default.
• W4381569264 cites W2007587690 @default.
• W4381569264 cites W2008275132 @default.
• W4381569264 cites W2008358023 @default.
• W4381569264 cites W2016363836 @default.
• W4381569264 cites W2017616744 @default.
• W4381569264 cites W2022740620 @default.
• W4381569264 cites W2032848665 @default.
• W4381569264 cites W2034643367 @default.
• W4381569264 cites W2039985233 @default.
• W4381569264 cites W2041564799 @default.
• W4381569264 cites W2042290651 @default.
• W4381569264 cites W2042694696 @default.
• W4381569264 cites W2047248406 @default.
• W4381569264 cites W2052756343 @default.
• W4381569264 cites W2054478615 @default.
• W4381569264 cites W2059006576 @default.
• W4381569264 cites W2061570786 @default.
• W4381569264 cites W2062569241 @default.
• W4381569264 cites W2066439053 @default.
• W4381569264 cites W2067424103 @default.
• W4381569264 cites W2068283188 @default.
• W4381569264 cites W2075051255 @default.
• W4381569264 cites W2079222644 @default.
• W4381569264 cites W2088283266 @default.
• W4381569264 cites W2091761766 @default.
• W4381569264 cites W2096648653 @default.
• W4381569264 cites W2098516151 @default.
• W4381569264 cites W2102468142 @default.
• W4381569264 cites W2109893256 @default.
• W4381569264 cites W2114216087 @default.
• W4381569264 cites W2114554876 @default.
• W4381569264 cites W2118018342 @default.
• W4381569264 cites W2128612296 @default.
• W4381569264 cites W2128942566 @default.
• W4381569264 cites W2129528223 @default.
• W4381569264 cites W2132469703 @default.
• W4381569264 cites W2133078968 @default.
• W4381569264 cites W2134584389 @default.
• W4381569264 cites W2135810055 @default.
• W4381569264 cites W2138574429 @default.
• W4381569264 cites W2147224530 @default.
• W4381569264 cites W2147720379 @default.
• W4381569264 cites W2151211094 @default.
• W4381569264 cites W2155039075 @default.
• W4381569264 cites W2163139977 @default.
• W4381569264 cites W2165161618 @default.
• W4381569264 cites W2179618893 @default.
• W4381569264 cites W2596896729 @default.
• W4381569264 cites W2750937983 @default.
• W4381569264 cites W2796842028 @default.
• W4381569264 cites W2929112735 @default.
• W4381569264 cites W2993217488 @default.
• W4381569264 cites W3007899655 @default.
• W4381569264 cites W3125172647 @default.
• W4381569264 cites W3126728632 @default.
• W4381569264 cites W33013741 @default.
• W4381569264 cites W4220975939 @default.
• W4381569264 cites W4226231356 @default.
• W4381569264 cites W4244398422 @default.
• W4381569264 cites W4249645740 @default.
• W4381569264 cites W4286457251 @default.
• W4381569264 cites W4306690118 @default.
• W4381569264 cites W4311703115 @default.
• W4381569264 cites W4313580518 @default.
• W4381569264 doi "https://doi.org/10.5194/acp-23-5929-2023" @default.
• W4381569264 hasPublicationYear "2023" @default.
• W4381569264 type Work @default.
• W4381569264 citedByCount "0" @default.
• W4381569264 crossrefType "journal-article" @default.
• W4381569264 hasAuthorship W4381569264A5007772091 @default.
• W4381569264 hasAuthorship W4381569264A5018820094 @default.

• next