Faculty

RAN Jiangjun
Assistant Professor
ranjj@sustech.edu.cn
Jiangjun Ran obtained his doctoral degree from Delft University of Technology in 2017. Then he moved to Hong Kong and worked at Chinese University of Hong Kong as a postdoctoral fellow. From Dec. 2018, he has been working at Southern University of Science and Technology as an assistant professor. His research interests are space Geodesy, satellite gravimetry, Earth's surface mass transportation, temporal and static gravity field determination using GRACE and GRACE-FO data, etc. By far, he has published 13 SCI papers in high-ranking journals, including The Cryosphere, Journal of Geodesy, Geophysical Journal International,Journal of Geodynamics, Remote Sensing, Marine Geophysical Research, etc. Among them, 9 papers are published as the first/corresponding author. Furthermore, he serves as a reviewer of Journal of Geodesy,Remote Sensing of Environment, etc.
Education Background
• 2011-2017, PhD in satellite gravimetry, Delft University of Technology
• 2008-2014, PhD in space Geodesy, the University of Chinese Academy of Sciences
• 2004-2008, Bachelor in Surveying and Mapping Engineering, Southwest Jiaotong University 
Work Experience
• 2018.12 - Present   Assistant Professor, Southern University of Science and Technology
• 2017.08 - 2018.12  Guest researcher, Delft University of Technology
• 2018.02 - 2018.10  Postdoctoral Fellow, The Chinese University of Hong Kong
• 2011.11 - 2017.07  Research Assistant, Delft University of Technology
Research
• Earth's surface mass transportation observed by space based geodetic technologies (e.g., satellite gravimetry, altimetry and InSAR)
• The design of China’s next generation satellite gravity mission
• Temporal and static gravity field determination using GRACE and GRACE-FO data
• Orbit determination of low-orbit satellites using GPS, Compass and Galileo

Book Chapter
Jiangjun Ran, Min Zhong, Houze Xu. 2015. Expected Accuracy and Requirement Analysis of China’s Future Satellite Gravity Mission (Ed.), GRACE Follow-On in China: Space advance gravity measurement program (pp. 1-14). Saarbrücken : LAP LAMBERT Academic Publishing
Journal Articles (The corresponding author is marked with asterisk *)
1. Jiangjun Ran, Miren Vizcaino, Pavel Ditmar, Michiel R. van den Broeke, Twila Moon, Ellyn M. Enderlin, Bert Wouters and Roland Klees. 2018. Seasonal mass variations show timing and magnitude of meltwater storage in the Greenland ice sheet, The Cryosphere. 12(9), 2981-2999, doi:10.5194/tc-12-2981-2018.
2. Jiangjun Ran, Pavel Ditmar, Roland Klees et al. 2018. Statistically optimal estimation of Greenland Ice Sheet mass variations from GRACE monthly solutions using an improved mascon approach, Journal of Geodesy. 92(3), 299-319, doi:10.1007/s00190-017-1063-5.
3. Jiangjun Ran, Pavel Ditmar, Roland Klees et al. 2018. Optimal mascon geometry in estimating mass anomalies within Greenland from GRACE. Geophysical Journal International. 214(3), 2133–2150, https://doi.org/10.1093/gji/ggy242
4. Jiangjun Ran, Xiaoyun Wan. 2018. GRACE observed mass loss in the middle and lower Yangtze basin, Geodesy and Geodynamics. Accepted.
5. Pavel Ditmar, Natt Tangdamrongsub, Jiangjun Ran*, Roland Klees. 2018. Estimation and reduction of random noise in mass anomaly time-series from satellite gravity data by minimization of month-to-month year-to-year double differences, Journal of Geodynamics. 119, 9-22, doi.org/10.1016/j.jog.2018.05.003.
6. Xiaoyun Wan, Jiangjun Ran*, Shuanggen Jin. 2018. Sensitivity analysis of gravity anomalies and gradient data for bathymetry inversion. Marine Geophysical research. https://doi.org/10.1007/s 11001-018 -9361-8
7. Xiaoyun Wan, Jiangjun Ran*, Jinhai Yu, Xiangchao Meng. 2018. An alternative method to improve gravity field models by incorporating GOCE gradient data. Earth Sciences Research Journal. 22(3), In press.
8. Tangdamrongsub, N., Han, S. C., Tian, S., Müller Schmied, H., Sutanudjaja, E. H., Jiangjun Ran, Feng, W. 2018. Evaluation of Groundwater Storage Variations Estimated from GRACE Data Assimilation and State-of-the-Art Land Surface Models in Australia and the North China Plain. Remote Sensing, 10(3), 483. doi:10.3390/rs10030483
9. Jiangjun Ran, Min Zhong, Houze Xu et al. 2015. Analysis of the gravity field recovery accuracy from the low-low satellite-to-satellite tracking mission. Chinese Journal of Geophysics- Chinese Edition, 58(10): 3487-3495, doi: 10.6038/cjg20151005
10. Jiangjun Ran, Min Zhong, Houze Xu et al. 2014. Global temporal gravity field recovery using GRACE data. Chinese Journal of Geophysics- Chinese Edition, 57(4): 1032-1040, doi:10.6038/cjg 20140402
11. Changqing Wang, Houze Xu, Min Zhong, Wei Feng, Jiangjun Ran, Fan Yang. 2015. An investigation on GRACE temporal gravity field recovery using the dynamic approach. Chinese Journal of Geophysics- Chinese Edition, 58(3): 756-766, doi: 10.6038/cjg20150306
12. Changqing Wang, Houze Xu, Min Zhong, Jiangjun Ran, Jiangcun Zhou. 2015. A study on the effect of ocean tides error in GRACE temporal gravity field recovery. Chinese Journal of Geophysics- Chinese Edition, 58(9): 3072-3079, doi: 10.6038/cjg20150905
13. Ziren Luo, Min Zhong, Xing Bian, Peng Dong, Yuhui Dong, Wei Gao, Hongyin Li, Yuqiong Li, Heshan Liu, Jiangjun Ran, Mingxue Shao, Wenlin Tang, Peng Xu, Gang Jin. Mapping Earth's gravity in space: Review and future perspective. Advances in Mechanics, 44(1): 291-337. doi:10.6052/ 1000-0992-14-047
14. Jiangjun Ran, Houze Xu et al. 2012. Expected accuracy of the global gravity field for next GRACE satellite gravity mission. Chinese Journal of Geophysics- Chinese Edition, 55(9): 2898-2908, doi: 10.6038/j.issn.0001- 5733.2012.09.009
15. Wei You, Yunzhong Shen, Dongmin Fan, Jiangjun Ran. 2010. The algorithm of Earth's gravitational field recovery based on satellite's orbital perturbation theory. Chinese Journal of Geophysics- Chinese Edition, 53(11): 2574-2581, doi: 10.3969/j.issn.0001-5733.2010.11.005.