Review
Geosciences, Multidisciplinary
Mukhtar Jibril Abdi, Nurfarhana Raffar, Zed Zulkafli, Khairudin Nurulhuda, Balqis Mohamed Rehan, Farrah Melissa Muharam, Nor Ain Khosim, Fredolin Tangang
Summary: Research on weather index insurance design has been increasing in recent years, with new indices and methods emerging. Rainfall and temperature-based indices are most prevalent, while other promising indices are underrepresented. Ordinary least square-based correlation and linear regression methods dominate yield-index modeling.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2022)
Article
Agricultural Engineering
Jun Furuya, Swe Swe Mar, Akira Hirano, Takeshi Sakurai
Summary: Climate change is causing extreme events like cyclones and torrential rains, posing a threat to farmers in coastal regions of Myanmar. Weather index insurance (WII) is being explored as a low-cost solution to address this issue. Research indicates that an optimal WII contract can help provide effective protection against flood damage for rice farmers.
PADDY AND WATER ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Wonga Masiza, Johannes George Chirima, Hamisai Hamandawana, Ahmed Mukalazi Kalumba, Hezekiel Bheki Magagula
Summary: Adverse weather is a major source of risk in agriculture, and the lack of effective risk management mechanisms exacerbates its impacts. Weather-index-based insurance is gaining popularity, particularly in developing countries, but its uptake is still low. This study addresses this issue by evaluating the suitability of different datasets for weather-index-based insurance, finding that CHIRPS data has higher correlations with in situ rainfall measurements. The study also highlights that the relationship between crop yield and weather and vegetation indices is weak, and water is not always the main limiting factor for smallholder farming systems.
Article
Environmental Sciences
Sarvarbek Eltazarov, Ihtiyor Bobojonov, Lena Kuhn, Thomas Glauben
Summary: Index insurance has been introduced as a solution to tackle challenges in agricultural insurance in developing countries. This study analyzes the accuracy of globally available satellite data in Uzbekistan, finding that while these sources may provide necessary data, there is a risk of overestimation and underestimation in precipitation data in Central Asia. Among the tested datasets, GSMaP shows relatively better performance in precipitation estimation for drought and flood detection.
Article
Environmental Sciences
Zhi Huang, Jianyu Hu, Weian Shi
Summary: This study used satellite data to map and quantitatively analyze coastal upwelling along the Taiwan east coast during the summer monsoon season, showing evidence of seasonal upwelling influenced by southwest/south winds. The results indicate three broad upwelling centers in the north, central, and south, with the northern center having the longest upwelling season lasting from May to September, and larger extents between June and August during the peak of the summer monsoon.
Article
Agricultural Economics & Policy
Mengmeng Qiang, Manhong Shen, Guanjun Xia
Summary: Mariculture is a high-risk industry that faces challenges in obtaining traditional insurance coverage due to moral hazard, adverse selection, and high transaction costs. An emerging alternative is weather index mariculture insurance, which is assessed in this research using the example of swimming crab precipitation index insurance. The findings suggest that weather index mariculture insurance is not always effective in promoting mariculturists' welfare and reducing income risks, especially with high gross rates. However, it could be a viable option for the government with low basis risk, as it requires lower subsidy costs.
AUSTRALIAN JOURNAL OF AGRICULTURAL AND RESOURCE ECONOMICS
(2023)
Article
Agricultural Engineering
Hideo Aizaki, Jun Furuya, Takeshi Sakurai, Swe Swe Mar
Summary: This study investigates farmers' preferences for weather index insurance in the Ayeyarwady Delta, Myanmar, using discrete choice experiments. The results show that most farmers prefer insurance packages covering cyclones, floods, and droughts.
PADDY AND WATER ENVIRONMENT
(2021)
Article
Business
Ricardo Nogales, Pamela Cordova
Summary: Weather index-based insurance schemes are gaining attention for agricultural risk management, as they can effectively address adverse selection and moral hazard issues, resulting in cheaper insurance contracts. We demonstrate that index-based schemes can manage climate risks at significantly lower policy prices.
EMERGING MARKETS FINANCE AND TRADE
(2022)
Article
Biodiversity Conservation
Yuan Jin, Ainong Li, Jinhu Bian, Xi Nan, Guangbin Lei, Kamran Muhammad
Summary: The study proposed a model using geographically weighted principal component analysis to quantify ecological vulnerability along the Bangladesh-China-India-Myanmar economic corridor, and suggested ecological management measures based on the results. It was found that ecological vulnerability is progressively increasing, especially in mountainous areas, with significant impacts on protected areas.
ECOLOGICAL INDICATORS
(2021)
Article
Plant Sciences
Yan Sun
Summary: This study proposes an optimization-based weather-yield model to reduce basis risk in weather-based index insurance. By incorporating monthly explanatory weather indices and extreme weather indices, this model captures the monthly variation and additional extreme weather effects during the growing season. The study demonstrates the advantages of this modeling approach and the effectiveness of weather index-based insurance in reducing basis risk and revenue risk using county-level yield data for mid-season rice in Anhui province, China.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Thiri Shwesin Aung
Summary: The impacts of armed conflict on the environment are complex to investigate, but satellite data and machine learning algorithms have proven useful in studying the direct and indirect effects of war on ecosystems. The Rohingya conflict has been described as one of the worst humanitarian crises and man-made disasters of the 21st Century. Despite ongoing agreements to repatriate refugees, research on damage quantification and suitability of human resettlement is lacking.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Wonga Masiza, Johannes George Chirima, Hamisai Hamandawana, Ahmed Mukalazi Kalumba, Hezekiel Bheki Magagula
Summary: This study evaluates the performance of TAMSAT and CHIRPS in estimating rainfall at different spatial scales in a smallholder farming area in South Africa, and uses CHIRPS and a crop water requirements model to design an IBCI system. Results show that CHIRPS performs better and can cover different stages of maize growth.
Article
Green & Sustainable Science & Technology
Zed Zulkafli, Farrah Melissa Muharam, Nurfarhana Raffar, Amirparsa Jajarmizadeh, Mukhtar Jibril Abdi, Balqis Mohamed Rehan, Khairudin Nurulhuda
Summary: Good index selection is crucial in minimizing basis risk in weather index insurance design, especially in the face of hydroclimatic variabilities. This study found that minimum temperature during crop flowering to maturity phase and average streamflow during crop maturity phase were key factors influencing rice yields in different seasons in Malaysia's irrigated double planting system. Based on these findings, temperature- and water-supply-based indices are recommended as foundations for developing insurance contracts for the rice system in northern Peninsular Malaysia.
Article
Geosciences, Multidisciplinary
Yongyong Fu, Jinsong Deng, Hongquan Wang, Alexis Comber, Wu Yang, Wenqiang Wu, Shixue You, Yi Lin, Ke Wang
Summary: China has experienced rapid and disordered expansion in the marine aquaculture industry, leading to risks for the coastal environment, economic development, and biodiversity. A study utilized a deep convolution neural network model to create a national-scale marine aquaculture map, revealing that marine aquaculture covers approximately 1100 square kilometers, with over 85% being marine plant culture areas, primarily in Fujian, Shandong, Liaoning, and Jiangsu provinces.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Green & Sustainable Science & Technology
Rachel M. Kleiman, Gregory W. Characklis, Jordan D. Kern
Summary: Large-scale algae production has the potential for biofuel, but its profitability is affected by weather and market fluctuations. This study develops an index-based insurance instrument to protect algae producers from unfavorable conditions and explores its effectiveness in reducing revenue variability. The results show that this insurance product can effectively reduce net revenue variability at a lower cost compared to relying solely on cash reserves.
Review
Agriculture, Multidisciplinary
Jun Furuya, Suminori Tokunaga, Mitsuru Okiyama, Yuko Akune, Yoji Kunimitsu, Hideo Aizaki, Shintaro Kobayashi
JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY
(2015)
Article
Agriculture, Multidisciplinary
Hideo Aizaki
JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY
(2015)
Article
Agriculture, Multidisciplinary
Hideo Aizaki, Tatsuji Onimaru, Chie Katayama, Kenji Ishida
JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY
(2016)
Article
Behavioral Sciences
Manabu Sawada, Hideo Aizaki, Kazuo Sato
Article
Agronomy
Taro Takahashi, Hideo Aizaki, Yingchun Ge, Mingguo Ma, Yasuhiro Nakashima, Takeshi Sato, Weizhen Wang, Nanae Yamada
AGRICULTURAL WATER MANAGEMENT
(2013)
Article
Agriculture, Dairy & Animal Science
Hideo Aizaki, Teruaki Nanseki, Hui Zhou
ANIMAL SCIENCE JOURNAL
(2013)
Article
Agricultural Engineering
Taro Takahashi, Hideo Aizaki, Takeshi Sato, Na Guo, Yasuhiro Nakashima, Shigeo Ogawa, Nanae Yamada, Xiaoyun Zheng
PADDY AND WATER ENVIRONMENT
(2013)
Article
Agricultural Economics & Policy
Hideo Aizaki, Kazuo Sato
BRITISH FOOD JOURNAL
(2020)
Article
Agricultural Engineering
Hideo Aizaki, Jun Furuya, Takeshi Sakurai, Swe Swe Mar
Summary: This study investigates farmers' preferences for weather index insurance in the Ayeyarwady Delta, Myanmar, using discrete choice experiments. The results show that most farmers prefer insurance packages covering cyclones, floods, and droughts.
PADDY AND WATER ENVIRONMENT
(2021)
Article
Agricultural Economics & Policy
Hideo Aizaki, Kazuo Sato, Tomoaki Nakatani
Summary: This study investigates the impact of consumers' hometown orientation on their preferences for food products. The findings demonstrate that consumers significantly favor food products produced in their hometown, and the willingness to pay for such products is estimated to be 48 JPY (0.44 USD) per kg higher compared to products from other regions. The study suggests that providing detailed information on the region of origin through food labels could serve as an effective marketing strategy to target consumers who are originally from a specific region but currently living elsewhere.
INTERNATIONAL FOOD AND AGRIBUSINESS MANAGEMENT REVIEW
(2023)
Article
Economics
Hideo Aizaki, James Fogarty
Summary: BWS1 is widely used in various research fields for easily measuring individual's preferences. The analysis of BWS1 still requires software packages, with the support of new and revised functions. New features allow BWS1 examples to be created for teaching purposes, and an integrated package RcmdrPlugin.BWS1 has been developed to facilitate BWS1 analysis with R. A free web tutorial for BWS1 in R is also available.
JOURNAL OF CHOICE MODELLING
(2023)
Article
Statistics & Probability
Hideo Aizaki, Tomoaki Nakatani, Kazuo Sato, James Fogarty
Summary: The R package DCchoice is designed to address programming-related barriers in applying the dichotomous choice contingent valuation (DCCV) methods. This paper introduces the current version of DCchoice which supports various DCCV methods and calculates willingness-to-pay and its confidence intervals. Additionally, web tutorials and R Commander plug-in are available for basic usage. DCchoice has advanced the applications of DCCV methods across different fields.
JAPANESE JOURNAL OF STATISTICS AND DATA SCIENCE
(2022)
Article
Economics
Hideo Aizaki, James Fogarty
JOURNAL OF CHOICE MODELLING
(2019)
Article
Geography
Taro Takahashi, Takeshi Sato, Hideo Aizaki, Na Guo, Yasuhiro Nakashima, Shigeo Ogawa, Nanae Yamada, Xiaoyun Zheng
LETTERS IN SPATIAL AND RESOURCE SCIENCES
(2013)