Primary Analysis of Oceanic Mesoscale Eddies Observation Abilities by Sentinel-3A SRAL

doi:10.11947/j.JGGS.2021.0107

Journal of Geodesy and Geoinformation Science ›› 2021, Vol. 4 ›› Issue (1): 56-62.doi: 10.11947/j.JGGS.2021.0107

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Primary Analysis of Oceanic Mesoscale Eddies Observation Abilities by Sentinel-3A SRAL

Jungang YANG¹(),Jie ZHANG¹,Wei CUI¹,Muñoz MAITE²,Makhoul EDUARD²

1. First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
2. IsardSAT S.L., Barcelona 08007, Spain

Received:2020-10-10 Accepted:2020-12-25 Online:2021-03-20 Published:2021-04-06
About author:Jungang YANG (1980-), male, associate research fellow, interests on satellite altimetry data processing and their application. E-mail: yangjg@fio.org.cn
Supported by:
Chinese National Natural Science Foundation(41576176)

Abstract

Abstract:

In this study, the north-western Pacific Ocean of Kuroshio region is selected as the experimental area to analyze the mesoscale eddies observation abilities of Sentinel-3A SRAL, including the independent detection abilities of Sentinel-3A SRAL and the improvement of mesoscale eddies detection abilities by data fusion with other satellite altimetry data. The Sentinel-3A SRAL data are mapped by the spatial-temporal objective analysis method to the sea level anomaly grid data. The mapping errors are analyzed by the comparisons between the grid data of different combinations and along the ground track of Jason-2/3. The independent detection abilities of Sentinel-3A SRAL are analyzed by the comparison between the grid data and the AVISO MSLA data. On the other hand, through the multi-satellite data fusion of different combinations of Sentinel-3A altimeter and other satellite altimeters such as Jason-2/3, the mesoscale eddies detection was performed based on the merged sea level anomaly data and the addition of Sentinel-3A SRAL data for the improvements of mesoscale eddies detection abilities by multi-satellite altimeters are concluded. It is concluded that Sentinel-3A SRAL has good abilities of mesoscale eddies detection as the combination of Jason-2 and Jason-3, and it is better than that of single altimeter of Jason-2 or Jason-3.

Key words: Sentinel-3; altimeter; mesoscale eddy

Jungang YANG,Jie ZHANG,Wei CUI,Muñoz MAITE,Makhoul EDUARD. Primary Analysis of Oceanic Mesoscale Eddies Observation Abilities by Sentinel-3A SRAL[J]. Journal of Geodesy and Geoinformation Science, 2021, 4(1): 56-62.

Figures/Tables 7

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References 8

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Sensor/Satellite	Period
Sentinel-3A SRAL	Cycle013—014(2017.1.3—2017.2.26)
Jason-2	Cycle313—318(2016.12.25—2017.2.23)
Jason-3	Cycle033—037(2016.12.30—2017.2.18)

Cycle	Pass	Age	Difference between grid data and actual measurements/m		RMS of impro- vement/m
Cycle	Pass	Age	S3	J2+S3	RMS of impro- vement/m
35	151	5	0.107	0.098	0.006
35	160	5	0.078	0.077	0.006
35	162	5	0.071	0.063	0.012
35	177	4	0.088	0.077	0.011
35	186	4	0.080	0.062	0.014
35	201	3	0.059	0.049	0.011
35	203	3	0.077	0.062	0.013
35	212	3	0.075	0.064	0.01
35	227	2	0.065	0.058	0.006
35	238	2	0.076	0.059	0.016
35	253	1	0.072	0.065	0.006
36	8	1	0.078	0.062	0.009
36	10	1	0.065	0.057	0.007
36	23	0	0.074	0.07	0.007
36	25	0	0.059	0.058	0.005
36	34	0	0.073	0.064	0.007
36	49	1	0.113	0.1	0.014
36	51	1	0.055	0.053	0.015
36	60	1	0.108	0.096	0.008

Primary Analysis of Oceanic Mesoscale Eddies Observation Abilities by Sentinel-3A SRAL

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