CCPortal
DOI10.1029/2020JD033475
Validation of IASI Satellite Ammonia Observations at the Pixel Scale Using In Situ Vertical Profiles
Guo X.; Wang R.; Pan D.; Zondlo M.A.; Clarisse L.; Van Damme M.; Whitburn S.; Coheur P.-F.; Clerbaux C.; Franco B.; Golston L.M.; Wendt L.; Sun K.; Tao L.; Miller D.; Mikoviny T.; Müller M.; Wisthaler A.; Tevlin A.G.; Murphy J.G.; Nowak J.B.; Roscioli J.R.; Volkamer R.; Kille N.; Neuman J.A.; Eilerman S.J.; Crawford J.H.; Yacovitch T.I.; Barrick J.D.; Scarino A.J.
发表日期2021
ISSN2169897X
卷号126期号:9
英文摘要Satellite ammonia (NH3) observations provide unprecedented insights into NH3 emissions, spatiotemporal variabilities and trends, but validation with in situ measurements remains lacking. Here, total columns from the Infrared Atmospheric Sounding Interferometer (IASI) were intercompared to boundary layer NH3 profiles derived from aircraft- and surface-based measurements primarily in Colorado, USA, in the summer of 2014. IASI-NH3 version 3 near real-time data set compared well to in situ derived columns (windows ±15 km around centroid, ±1 h around overpass time) with a correlation of 0.58, a slope of 0.78 ± 0.14 and an intercept of 2.1 × 1015±1.5 × 1015 molecules cm−2. Agreement degrades at larger spatiotemporal windows, consistent with the short atmospheric lifetime of NH3. We also examined IASI version 3R data, which relies on temperature retrievals from the ERA Reanalysis, and a third product generated using aircraft-measured temperature profiles. The overall agreement improves slightly for both cases, and neither is biased within their combined measurement errors. Thus, spatiotemporal averaging of IASI over large windows can be used to reduce retrieval noise. Nonetheless, sampling artifacts of airborne NH3 instruments result in significant uncertainties of the in situ-derived columns. For example, large validation differences exist between ascent and descent profiles, and the assumptions of the free tropospheric NH3 profiles used above the aircraft ceiling significantly impact the validation. Because short-lived species like NH3 largely reside within the boundary layer with complex vertical structures, more comprehensive validation is needed across a wide range of environments. More accurate and widespread in situ NH3 data sets are therefore required for improved validations of satellite products. © 2021. The Authors.
英文关键词ammonia; IASI; remote sensing; satellite; validation; vertical profile
语种英语
来源期刊Journal of Geophysical Research: Atmospheres
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/185267
作者单位Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, United States; Université Libre de Bruxelles (ULB), Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Brussels, Belgium; LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France; Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA, United States; Hunterdon Central Regional High School, Flemington, NJ, United States; Department of Civil, Structural and Environmental Engineering, University at Buffalo, Buffalo, NY, United States; Princeton Institute for the Science and Technology of Materials, Princeton, NJ, United States; Sonoma Technology, Inc., Washington, DC, United States; Chemistry and Dynamics Branch, Science Directorate, NASA Langley Research Center, Hampton, VA, United States; Oak Ridge Associated Universities, Oak Ridge, TN, United States; Department of Chemistry, University of Oslo, Oslo, Norway; Institute for Ion Physics and Applied Physics, University of Innsbr...
推荐引用方式
GB/T 7714
Guo X.,Wang R.,Pan D.,et al. Validation of IASI Satellite Ammonia Observations at the Pixel Scale Using In Situ Vertical Profiles[J],2021,126(9).
APA Guo X..,Wang R..,Pan D..,Zondlo M.A..,Clarisse L..,...&Scarino A.J..(2021).Validation of IASI Satellite Ammonia Observations at the Pixel Scale Using In Situ Vertical Profiles.Journal of Geophysical Research: Atmospheres,126(9).
MLA Guo X.,et al."Validation of IASI Satellite Ammonia Observations at the Pixel Scale Using In Situ Vertical Profiles".Journal of Geophysical Research: Atmospheres 126.9(2021).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Guo X.]的文章
[Wang R.]的文章
[Pan D.]的文章
百度学术
百度学术中相似的文章
[Guo X.]的文章
[Wang R.]的文章
[Pan D.]的文章
必应学术
必应学术中相似的文章
[Guo X.]的文章
[Wang R.]的文章
[Pan D.]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。