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Concept Design of the "Guanlan" Science Mission: China's Novel Contribution to Space Oceanography
Chen, Ge1,2; Tang, Junwu1; Zhao, Chaofang1,2; Wu, Songhua1,2; Yu, Fangjie1,2; Ma, Chunyong1,2; Xu, Yongsheng3; Chen, Weibiao4; Zhang, Yunhua5; Liu, Jie6; Wu, Lixin1,2
2019-04-17
Source PublicationFRONTIERS IN MARINE SCIENCE
Volume6Pages:14
Corresponding AuthorChen, Ge(gechen@ouc.edu.cn)
AbstractAmong the various challenges that spaceborne radar observations of the ocean face, the following two issues are probably of a higher priority: inadequate dynamic resolution, and ineffective vertical penetration. It is therefore the vision of the National Laboratory for Marine Science and Technology of China that two highly anticipated breakthroughs in the coming decade are likely to be associated with radar interferometry and ocean lidar (OL) technology, which are expected to make a substantial contribution to a submesoscale-resolving and depth-resolving observation of the ocean. As an expanded follow-up of SWOT and an oceanic counterpart of CALIPSO, the planned "Guanlan" science mission comprises a dual-frequency (Ku and Ka) interferometric altimetry (IA), and a near-nadir pointing OL. Such an unprecedented combination of sensor systems has at least three prominent advantages. (i) The dual-frequency IA ensures a wider swath and a shorter repeat cycle which leads to a significantly improved temporal and spatial resolution up to days and kilometers. (ii) The first spaceborne active OL ensures a deeper penetration depth and an all-time detection which leads to a layered characterization of the optical properties of the subsurface ocean, while also serving as a near-nadir altimeter measuring vertical velocities associated with the divergence, and convergence of geostrophic eddy motions in the mixed layer. (iii) The simultaneous functioning of the IA/OL system allows for an enhanced correction of the contamination effects of the atmosphere and the air-sea interface, which in turn considerably reduces the error budgets of the two sensors. As a result, the integrated IA/OL payload is expected to resolve the ocean variability at submeso and sub-week scales with a centimeter-level accuracy, while also partially revealing marine life systems and ecosystems with a 10-m vertical interval in the euphotic layer, moving a significant step forward toward a "transparent ocean" down to the vicinity of the thermocline, both dynamically and bio-optically.
Keywordconcept design Guanlan science mission interferometric altimetry ocean lidar space oceanography
DOI10.3389/fmars.2019.00194
Indexed BySCI
Language英语
Funding ProjectQingdao National Laboratory for Marine Science and Technology of China[2018SDKJ102] ; Qingdao National Laboratory for Marine Science and Technology of China[2015ASTP-OS15]
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology
WOS SubjectEnvironmental Sciences ; Marine & Freshwater Biology
WOS IDWOS:000465449200001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/161359
Collection中国科学院海洋研究所
Corresponding AuthorChen, Ge
Affiliation1.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China
2.Ocean Univ China, Dept Marine Technol, Qingdao, Shandong, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao, Shandong, Peoples R China
4.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai, Peoples R China
5.Chinese Acad Sci, Natl Space Sci Ctr, Beijing, Peoples R China
6.China Acad Space Technol, Beijing Inst Spacecraft Syst Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Chen, Ge,Tang, Junwu,Zhao, Chaofang,et al. Concept Design of the "Guanlan" Science Mission: China's Novel Contribution to Space Oceanography[J]. FRONTIERS IN MARINE SCIENCE,2019,6:14.
APA Chen, Ge.,Tang, Junwu.,Zhao, Chaofang.,Wu, Songhua.,Yu, Fangjie.,...&Wu, Lixin.(2019).Concept Design of the "Guanlan" Science Mission: China's Novel Contribution to Space Oceanography.FRONTIERS IN MARINE SCIENCE,6,14.
MLA Chen, Ge,et al."Concept Design of the "Guanlan" Science Mission: China's Novel Contribution to Space Oceanography".FRONTIERS IN MARINE SCIENCE 6(2019):14.
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