气候变化领域集成服务门户(CCPortal): Assessment and Error Analysis of Terra-MODIS and MISR Cloud-Top Heights Through Comparison With ISS-CATS Lidar

CCPortal

DOI	10.1029/2020JD034281
	Assessment and Error Analysis of Terra-MODIS and MISR Cloud-Top Heights Through Comparison With ISS-CATS Lidar
	Mitra A.; Di Girolamo L.; Hong Y.; Zhan Y.; Mueller K.J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	Cloud-top heights (CTH) from the Multiangle Imaging Spectroradiometer (MISR) and the Moderate Resolution Imaging Spectroradiometer (MODIS) on Terra constitute our longest-running single-platform CTH record from a stable orbit. Here, we provide the first evaluation of the Terra Level 2 CTH record against collocated International Space Station Cloud-Aerosol Transport System (CATS) lidar observations between 50ºN and 50ºS. Bias and precision of Terra CTH relative to CATS is shown to be strongly tied to cloud horizontal and vertical heterogeneity and altitude. For single-layered, unbroken, optically thick clouds observed over all altitudes, the uncertainties in MODIS and MISR CTH are −540 ± 690 m and −280 ± 370 m, respectively. The uncertainties are generally smaller for lower altitude clouds and larger for optically thin clouds. For multi-layered clouds, errors are summarized herein using both absolute CTH and CATS-layer-altitude proximity to Terra CTH. We show that MISR detects the lower cloud in a two-layered system, provided top-layer optical depth <∼0.3, but MISR low-cloud CTH errors are unaltered by the presence of thin cirrus. Systematic and random errors are propagated to explain inter-sensor disagreements, as well as to provide the first estimate of the MISR stereo-opacity bias. For MISR, altitude-dependent wind-retrieval bias (−90 to −110 m) and stereo-opacity bias (−60 to −260 m) and for MODIS, CO2-slicing bias due to geometrically thick cirrus leads to overall negative CTH bias. MISR’s precision is largely driven by precision in retrieved wind-speed (3.7 m s−1), whereas MODIS precision is driven by forward-modeling uncertainty. © 2021. The Authors.
英文关键词	cloud-top heights; error analysis; MISR; stereo-opacity bias; Terra MODIS; Terra satellite
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/185268
作者单位	University of Illinois, Urbana-Champaign, IL, United States; Metservice Ltd., Wellington, New Zealand; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Mitra A.,Di Girolamo L.,Hong Y.,et al. Assessment and Error Analysis of Terra-MODIS and MISR Cloud-Top Heights Through Comparison With ISS-CATS Lidar[J],2021,126(9).
APA	Mitra A.,Di Girolamo L.,Hong Y.,Zhan Y.,&Mueller K.J..(2021).Assessment and Error Analysis of Terra-MODIS and MISR Cloud-Top Heights Through Comparison With ISS-CATS Lidar.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Mitra A.,et al."Assessment and Error Analysis of Terra-MODIS and MISR Cloud-Top Heights Through Comparison With ISS-CATS Lidar".Journal of Geophysical Research: Atmospheres 126.9(2021).