Terrestrial, Atmospheric and Oceanic Sciences (TAO) - TAO Journal

Vol. 32, No. 2
April 2021

Table of Contents

Terrestrial, Atmospheric and
Oceanic Sciences (TAO)

ISSN:
1017-0839 (Print)
2311-7680 (Online)

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Tropical Cyclone Variability under Changing Climate

Submission deadline: 2021/08/31

Joint Call for Contributions to the Special Collection of YMC

http://www.jamstec.go.jp/ymc/ymc_sp_collection.html

A compilation of precursor times of earthquakes in Taiwan
Author:
- To review the observed precursors of earthquakes in Taiwan from literature
- To compile the precursor times from literature
- To study the possible correlation between precursor time and the mainshock magnitude
- Author(s): Jeen-Hwa Wang
- DOI: 10.3319/TAO.2021.07.12.01
- Keywords: Earthquake prediction Earthquake precursors Precursor time Earthquake magnitude
Analysis on Bouguer gravity anomaly characteristics and boundary identification in China and surrounding regions
Author:
- High precision and high resolution satellite data are used in the paper
- Gravity full tensor gradient and its combination are used for edge detection
- East Asia is divided into tectonic blocks in the paper
- Author(s): Zhixin Xue, Dongmei Guo, Honglei Li, and Panpan Zhang
- DOI: 10.3319/TAO.2021.06.22.02
- Keywords: Bouguer gravity anomaly Gravity interpretation Tectonic stress field Edge detection Tectonic division
Determination of gravity anomalies in Java, Indonesia, from airborne gravity survey
Author:
- Resolvable wavelength is associated with the survey setup
- Airborne gravimeter is prone to environmental disturbances
- Airborne gravity mission complete the need of gravity data in Java, Indonesia
- Author(s): Brian Bramanto, Kosasih Prijatna, Arisauna Maulidyan Pahlevi, ‪Dina Anggreni Sarsito, Darharta Dahrin, Erfan Dany Variandy, and Raa Ina Sidrotul Munthaha‬‬‬‬‬‬‬‬
- DOI: 10.3319/TAO.2021.06.04.01
- Keywords: Airborne gravity Gravity anomalies Resolvable wavelength

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Small-amplitude trochoidal oscillations in Typhoons Rammasun (2014) and Lekima (2019)
Author:
- The tracks of Typhoons Rammasun and Lekima exhibited small-amplitude oscillations
- The oscillation can be numerically simulated in terms of the period and amplitude
- The trochoidal oscillation is the wobble of the whole TC inner-core circulation
- Author(s): Yecheng Feng and Liguang Wu
- DOI: 10.3319/TAO.2021.07.26.02
- Keywords: Tropical cyclone Track Trochoidal oscillation
A study of the rainfall and structural changes of Typhoon Koppu (2015) over northern Philippines
Author:
- TWRF predicts Typhoon Koppu over Philippines reasonably well
- Understand the reorganization of outer rain band caused intensive rainfall
- Realize the mountainous terrain over Luzon has complex effect to Typhoon Koppu
- Author(s): Tien-Chiang Yeh, Esperanza O. Cayanan, Ling-Feng Hsiao, Der-Song Chen, and Ya-Ting Tsai
- DOI: 10.3319/TAO.2021.07.12.02
- Keywords: Tropical cyclone rainfall prediction Terrain effect Philippines TWRF (Typhoon WRF)
Relation of the western North Pacific tropical cyclone genesis number to intraseasonal oscillation intensity
Author:
- Relation of TC genesis to ISO intensity differs among four quadrants of the WNP
- Stronger ISO favors more TC occurrence in the southeast quadrant of the WNP
- Impact of ISO intensity on the WNP TC is more important than seasonal mean
- Author(s): Renguang Wu and Xi Cao
- DOI: 10.3319/TAO.2021.06.04.02
- Keywords: Tropical cyclone genesis number ISO intensity The western North Pacific Spatial change in the relationship

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Carbonate chemistry of the Dongsha Atoll Lagoon in the northern South China Sea

Author:
- Author(s): Lan-Feng Fan, Song-Quan Qiu, and Wen-Chen Chou
- DOI: 10.3319/TAO.2021.05.15.02
- Keywords: Carbonate chemistry Dongsha Atoll Coral reef CO2 Ocean acidification South China Sea
Phytoplankton production and consumption rate in the warm and cold seasons in the coastal ecosystem of Matsu Island
Author:
- We studied the carbon flux in the microbial and classical food webs
- Large autotrophs (>20 μm) were available for mesozooplankton in the warm season
- Microbial food web was found to be an important compartment in the cold season
- Author(s): An-Yi Tsai, Gwo-Ching Gong, Kuo-Ping Chiang, and Sheng-Fang Tsai
- DOI: 10.3319/TAO.2021.05.15.01
- Keywords: Phytoplankton Mesozooplankton Microbial food webs Classical food webs
Coastal inundation modeling and mapping for North Jakarta coast during a supermoon period
Author:
- The development of the inundation modelling and mapping for North Jakarta coast
- The initials of the model used components of the wave, hydrodynamic, and hydrology
- Produce coastal inundation mapping
- Author(s): Nelly Florida Riama, Riri Fitri Sari, Widada Sulistya, Henita Rahmayanti, Khafid Rizki Pratama, Bayu Edo Pratama, and Arief Wibowo Suryo
- DOI: 10.3319/TAO.2021.04.02.01
- Keywords: North Jakarta Supermoon Water level Delft3D Coastal inundation Early warning

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Holocene fluvial landscape evolution driven by sea level and tectonic controls in the Gangkou River, Hengchun Peninsula
Author:
- The fluvial landscape in the study area has been shaped by a low uplift rate.
- The uplift rate has been only 1.5-1.7 mm/yr over the last 10 thousand years.
- The HMFS reached 4.1 km inland from the current coastline at 8.0-7.7 ka.
- Author(s): Jia-Hong Chen, Shyh-Jeng Chyi, Jiun-Yee Yen, Lih-Der Ho, Christopher Lüthgens, Pei-Ling Wang, Li-Hung Lin, I-Chin Yen, Chia-Hung Jen, and Jyh-Jaan Steven Huang
- DOI: 10.3319/TAO.2021.04.08.01
- Keywords: Fluvial landscape Hengchun Peninsula Underfit stream Sea level change Gangkou River River terrace Holocene Maximum Flooding Surface (HMFS) Lagoon
Integrating in-situ monitoring data and slope stability analysis for a new empirical slope failure warning criteria
Author:
- Slope stability is evaluated by the limit equilibrium method
- Relationship between rainfall and groundwater level is assessed
- The rainfall-based slope failure criteria are developed
- Author(s): Kuo-Jung Wang, Der-Her Lee, Yun-Che Chen, Jian-Hong Wu, Zhi-Ren Tseng, and Charng-Hsein Juang
- DOI: 10.3319/TAO.2021.03.29.01
- Keywords: Alishan Highway Groundwater level Rainfall Slope failure Warning criteria
- Citation: Wang, K.-J., D.-H. Lee, Y.-C. Chen, J.-H. Wu, Z.-R. Tseng, and C.-H. Juang, 2021: Integrating in-situ monitoring data and slope stability analysis for a new empirical slope failure warning criteria. Terr. Atmos. Ocean. Sci., 32, 171-189, doi: 10.3319/TAO.2021.03.29.01
High-frequency East Asia monsoon variability during 115000 - 93000 a BP in Northern China
Author:
- 17 sedimentary cycles of dune sands and lacustrine facies during 115,000~93,000 a BP.
- Grain size and trace elements displayed 17 cycles.
- Alternations in East Asian winter and summer monsoons occurred inNorthern China.
- Author(s): Fengnian Wang, Yuejun Si, Baosheng Li, Dongfeng Niu, Xiaohao Wen, Zhiwen Li, Min Chen, Chen Wang, Yihua Guo, and Zhiying Yang
- DOI: 10.3319/TAO.2021.02.02.01
- Keywords: Aeolian sediments Trace geochemical element Monsoonal climate changes MIS5c d period Mu Us Desert
- Citation: Wang, F., Y. Si, B. Li, D. Niu, X. Wen, Z. Li, M. Chen, C. Wang, Y. Guo, and Z. Yang, 2021: Highfrequency East Asia monsoon variability during 115000 - 93000 a BP in Northern China. Terr. Atmos. Ocean. Sci., 32, 159-169, doi: 10.3319/TAO.2021.02.02.01

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Global observations of ROTI by using ground-based GNSS receivers
Author:
- ROTIs denote phase fluctuations of GNSS signals caused by horizontal TEC gradients
- ROTIs exhibit a prominent double-peak structure centering at ±20°N dip latitudes
- Month-longitude-ROTI plots at global low latitudes are for the first time constructed
- Author(s): Jann-Yenq Liu and Shih-An Wu
- DOI: 10.3319/TAO.2021.07.26.03
- Keywords: ROTI Total electron content GNSS FORMOSAT 3/COSMIC
The comparison of topmost radio occultation electron densities with in-situ ion densities from FORMOSAT-7/COSMIC-2
Author:
- Evaluate the RO estimated topmost electron density by IVM measurement
- The discrepancy might be due to the spherical symmetry assumption in Abel inversion
- The geometry of LEO and GNSS is an important factor in the retrieval EDPs
- Author(s): Chia-Hung Chen, Ho-Fang Tsai, Li-Yuan Wang, Chien-Hung Charles Lin, Jann-Yenq Liu, and Wen-Hao Yeh
- DOI: 10.3319/TAO.2021.07.26.01
- Keywords: Radio occultation Spherical symmetry assumption Coplanar approximation Ion Velocity Meter FORMOSAT 7/COSMIC 2
Validation of FORMOSAT-7/COSMIC2 IVM ion density and TGRS orbit electron density
Author:
- The comparison between the TGRS and IVM density observations show a good agreement
- The morphologies of the topside ionosphere in TGRS and IVM are nearly identical
- Relative errors between the TGRS and IVM density are evaluated with OSSEs
- Author(s): Min-Yang Chou, John J. Braun, Qian Wu, R. A. Heelis, Irina Zakharenkova, Iurii Cherniak, N. M. Pedatella, and R. A. Stoneback
- DOI: 10.3319/TAO.2021.06.22.01
- Keywords: FORMOSAT 7/COSMIC2 IVM ion density TGRS orbit electron density

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Probabilistic typhoon rainfall forecasting using a modified fuzzy inference model
Author:
- Modified fuzzy inference model with revised implication and defuzzification processes
- Resampling process to generate a predicted probability distribution
- Real-time probabilistic typhoon rainfall forecasting
- Author(s): Shien-Tsung Chen
- DOI: 10.3319/TAO.2021.07.23.01
- Keywords: Probabilistic forecasting Fuzzy inference Typhoon rainfall
Characteristics and prediction of extreme drought event using LSTM model in Wei River Basin
Author:
- The characteristics and influence factors of drought trends are analyzed
- The Long short-term memory was used to predict the future SPEI value
- The results provide ideas references for extreme drought events prevention
- Author(s): Dongfei Yan, Rengui Jiang, Jiancang Xie, Yong Zhao, Jiwei Zhu, and Jichao Liang
- DOI: 10.3319/TAO.2021.02.07.01
- Keywords: Extreme drought event SPEI Non parametric Mann Kendall analysis LSTM Wei River Basin
- Citation: Yan, D., R. Jiang, J. Xie, Y. Zhao, J. Zhu, and J. Liang, 2021: Characteristics and prediction of extreme drought event using LSTM model in Wei River Basin. Terr. Atmos. Ocean. Sci., 32, 261-274, doi: 10.3319/TAO.2021.02.07.01
Probabilistic assessment of drought states using a dynamic naive Bayesian classifier
Author:
- Classification of drought states as meteorological, agricultural, or hydrological
- Development of the Bayesian classifier for multi-index drought classification
- Evaluation of the Bayesian classifier for representing hydrological droughts
- Author(s): Dong-Hyeok Park, Si Chen, and Tae-Woong Kim
- DOI: 10.3319/TAO.2019.10.08.01
- Keywords: Drought index Dynamic Naive Bayesian Classifier Hydrological drought
- Citation: Park, D.-H., S. Chen, and T.-W. Kim, 2020: Probabilistic assessment of drought states using a dynamic naive Bayesian classifier. Terr. Atmos. Ocean. Sci., 31, 359-368, doi: 10.3319/TAO.2019.10.08.01

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