FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4251478889> ?p ?o ?g. }

• W4251478889 abstract "Abstract. We carried out 19 city-circle-around car MAX-DOAS experiments on the 6th Ring Road of Beijing in January, September, and October 2014. The tropospheric vertical column densities (VCDs) of NO2 were retrieved from measured spectra by the Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) technique and used to estimate the emissions of NOx (≡ NO + NO2) from urban Beijing during the experimental periods. The offline LAPS-WRF-CMAQ model system was used to simulate the wind fields by assimilation of observational data and calculate the NO2-to-NOx concentration ratios, both of which are also needed for the estimation of NOx emissions. The NOX emissions in urban Beijing for the different seasons derived from the car MAX-DOAS measurements in this study were compared to the multi-resolution emission inventory in China for 2012 (MEIC 2012). Our car MAX-DOAS measurement results showed higher NO2 VCD in January than in the other two months and typically larger NO2 VCD at the southern parts of the 6th Ring Road than at the northern parts. The wind field had obvious impacts on the spatial distribution of NO2 VCD, with the mean NO2 VCD along the 6th Ring Road typically being higher under the south wind than under the north wind. In addition to the seasonal difference, the journey-to-journey variations of estimated NOx emissions rates (ENOx) were large even within the same month, mainly due to uncertainties in the calculations of wind speed, the ratio of NO2 and NOx concentration, and the decay rate of NOx from the emission sources to the measured positions under different meteorological conditions. The ranges of ENOx during the heating and non-heating periods were 28.7 × 1025 to 60.0 × 1025 molecules s−1 and 7.7 × 1025 to 24.8 × 1025 molecules s−1, respectively. The average ENOx values in the heating and non-heating periods were 43.0 × 1025 molecules s−1 and 13.9 × 1025 molecules s−1, respectively. The uncertainty range of ENOx was 16.4–33.2 %. The monthly emission rates from MEIC 2012 are found to be lower than the estimated ENOX, particularly in January. Our results provide important information and datasets for the validation of satellite products and also show how car MAX-DOAS measurements can be used effectively for dynamic monitoring and updating of the NOx emissions from megacities such as Beijing." @default.
• W4251478889 created "2022-05-12" @default.
• W4251478889 creator A5000457921 @default.
• W4251478889 creator A5000645218 @default.
• W4251478889 creator A5000765352 @default.
• W4251478889 creator A5002120842 @default.
• W4251478889 creator A5034114266 @default.
• W4251478889 creator A5037249913 @default.
• W4251478889 creator A5039913528 @default.
• W4251478889 creator A5040842969 @default.
• W4251478889 creator A5050051337 @default.
• W4251478889 creator A5068881246 @default.
• W4251478889 date "2020-06-22" @default.
• W4251478889 modified "2023-10-17" @default.
• W4251478889 title "Retrieving tropospheric NO₂ vertical column densities around the city of Beijing and estimating NO_<i>x</i> emissions based on carMAX-DOAS measurements" @default.
• W4251478889 doi "https://doi.org/10.5194/acp-2020-316" @default.
• W4251478889 hasPublicationYear "2020" @default.
• W4251478889 type Work @default.
• W4251478889 citedByCount "0" @default.
• W4251478889 crossrefType "posted-content" @default.
• W4251478889 hasAuthorship W4251478889A5000457921 @default.
• W4251478889 hasAuthorship W4251478889A5000645218 @default.
• W4251478889 hasAuthorship W4251478889A5000765352 @default.
• W4251478889 hasAuthorship W4251478889A5002120842 @default.
• W4251478889 hasAuthorship W4251478889A5034114266 @default.
• W4251478889 hasAuthorship W4251478889A5037249913 @default.
• W4251478889 hasAuthorship W4251478889A5039913528 @default.
• W4251478889 hasAuthorship W4251478889A5040842969 @default.
• W4251478889 hasAuthorship W4251478889A5050051337 @default.
• W4251478889 hasAuthorship W4251478889A5068881246 @default.
• W4251478889 hasBestOaLocation W42514788892 @default.
• W4251478889 hasConcept C105923489 @default.
• W4251478889 hasConcept C107775477 @default.
• W4251478889 hasConcept C121332964 @default.
• W4251478889 hasConcept C125287762 @default.
• W4251478889 hasConcept C126314574 @default.
• W4251478889 hasConcept C133204551 @default.
• W4251478889 hasConcept C153294291 @default.
• W4251478889 hasConcept C161067210 @default.
• W4251478889 hasConcept C166957645 @default.
• W4251478889 hasConcept C178790620 @default.
• W4251478889 hasConcept C185592680 @default.
• W4251478889 hasConcept C191935318 @default.
• W4251478889 hasConcept C194072897 @default.
• W4251478889 hasConcept C203032635 @default.
• W4251478889 hasConcept C205649164 @default.
• W4251478889 hasConcept C24890656 @default.
• W4251478889 hasConcept C2776720842 @default.
• W4251478889 hasConcept C2778304055 @default.
• W4251478889 hasConcept C2778360411 @default.
• W4251478889 hasConcept C39432304 @default.
• W4251478889 hasConcept C9075549 @default.
• W4251478889 hasConcept C91586092 @default.
• W4251478889 hasConceptScore W4251478889C105923489 @default.
• W4251478889 hasConceptScore W4251478889C107775477 @default.
• W4251478889 hasConceptScore W4251478889C121332964 @default.
• W4251478889 hasConceptScore W4251478889C125287762 @default.
• W4251478889 hasConceptScore W4251478889C126314574 @default.
• W4251478889 hasConceptScore W4251478889C133204551 @default.
• W4251478889 hasConceptScore W4251478889C153294291 @default.
• W4251478889 hasConceptScore W4251478889C161067210 @default.
• W4251478889 hasConceptScore W4251478889C166957645 @default.
• W4251478889 hasConceptScore W4251478889C178790620 @default.
• W4251478889 hasConceptScore W4251478889C185592680 @default.
• W4251478889 hasConceptScore W4251478889C191935318 @default.
• W4251478889 hasConceptScore W4251478889C194072897 @default.
• W4251478889 hasConceptScore W4251478889C203032635 @default.
• W4251478889 hasConceptScore W4251478889C205649164 @default.
• W4251478889 hasConceptScore W4251478889C24890656 @default.
• W4251478889 hasConceptScore W4251478889C2776720842 @default.
• W4251478889 hasConceptScore W4251478889C2778304055 @default.
• W4251478889 hasConceptScore W4251478889C2778360411 @default.
• W4251478889 hasConceptScore W4251478889C39432304 @default.
• W4251478889 hasConceptScore W4251478889C9075549 @default.
• W4251478889 hasConceptScore W4251478889C91586092 @default.
• W4251478889 hasFunder F4320321001 @default.
• W4251478889 hasLocation W42514788891 @default.
• W4251478889 hasLocation W42514788892 @default.
• W4251478889 hasOpenAccess W4251478889 @default.
• W4251478889 hasPrimaryLocation W42514788891 @default.
• W4251478889 hasRelatedWork W22293624 @default.
• W4251478889 hasRelatedWork W40581401 @default.
• W4251478889 hasRelatedWork W407821 @default.
• W4251478889 hasRelatedWork W41100250 @default.
• W4251478889 hasRelatedWork W45020000 @default.
• W4251478889 hasRelatedWork W51390881 @default.
• W4251478889 hasRelatedWork W515465 @default.
• W4251478889 hasRelatedWork W55157688 @default.
• W4251478889 hasRelatedWork W55447826 @default.
• W4251478889 hasRelatedWork W57257028 @default.
• W4251478889 isParatext "false" @default.
• W4251478889 isRetracted "false" @default.
• W4251478889 workType "article" @default.