CO2 in Beijing and Xianghe Observed by Ground-Based FTIR Column Measurements and Validation to OCO-2/3 Satellite Observations
| dc.contributor.author | Zhou, M. | |
| dc.contributor.author | Ni, Q. | |
| dc.contributor.author | Cai, Z. | |
| dc.contributor.author | Langerock, B. | |
| dc.contributor.author | Nan, W. | |
| dc.contributor.author | Yang, Y. | |
| dc.contributor.author | Che, K. | |
| dc.contributor.author | Yang, D. | |
| dc.contributor.author | Wang, T. | |
| dc.contributor.author | Liu, Y. | |
| dc.contributor.author | Wang, P. | |
| dc.date | 2022 | |
| dc.date.accessioned | 2022-08-16T08:55:01Z | |
| dc.date.available | 2022-08-16T08:55:01Z | |
| dc.identifier.uri | https://orfeo.belnet.be/handle/internal/10049 | |
| dc.description | Monitoring the atmospheric CO2 columns inside and around a city is of great importance to understand the temporal–spatial variation of XCO2 near strong anthropogenic emissions. In this study, we use two FTIR CO2 column measurements in Beijing (Bruker EM27/SUN) and Xianghe (Bruker IFS 125HR) between 2019 and 2021 to investigate the differences of XCO2 between Beijing (urban) and Xianghe (suburb) in North China and to validate the OCO-2 and OCO-3 satellite XCO2 retrievals. The mean and standard deviation (std) of the ΔXCO2 between Beijing and Xianghe (Beijing–Xianghe) observed by two FTIR instruments are 0.206 ± 1.736 ppm, which has a seasonal variation and varies with meteorological conditions (wind speed and wind direction). The mean and std of the XCO2 differences between co-located satellite and FTIR measurements are −0.216 ± 1.578 ppm in Beijing and −0.343 ± 1.438 ppm in Xianghe for OCO-2 and 0.637 ± 1.594 ppm in Beijing and 1.206 ± 1.420 ppm in Xianghe for OCO-3. It is found that the OCO-3 snapshot area mode (SAM) measurements can capture the spatial gradient of XCO2 between urban and suburbs well. However, the FTIR measurements indicate that the OCO-3 SAM measurements are about 0.9–1.4 ppm overestimated in Beijing and Xianghe. | |
| dc.language | eng | |
| dc.title | CO2 in Beijing and Xianghe Observed by Ground-Based FTIR Column Measurements and Validation to OCO-2/3 Satellite Observations | |
| dc.type | Article | |
| dc.subject.frascati | Earth and related Environmental sciences | |
| dc.audience | Scientific | |
| dc.subject.free | CO2 | |
| dc.subject.free | FTIR TCCON and COCCON | |
| dc.subject.free | OCO-2/3 | |
| dc.subject.free | satellite validation | |
| dc.subject.free | Beijing | |
| dc.source.title | Remote Sensing | |
| dc.source.volume | 14 | |
| dc.source.issue | 15 | |
| dc.source.page | A3769 | |
| Orfeo.peerreviewed | Yes | |
| dc.identifier.doi | 10.3390/rs14153769 | |
| dc.identifier.scopus |
