IDEAS home Printed from https://ideas.repec.org/a/spr/nathaz/v112y2022i1d10.1007_s11069-021-05176-9.html
   My bibliography  Save this article

Interannual variations of the monthly rainfall anomalies over Tanzania from March to May and their associated atmospheric circulations anomalies

Author

Listed:
  • Laban Lameck Kebacho

    (University of Dar es Salaam)

Abstract

Although long rains (March–May) over Tanzania exhibit significant spatiotemporal variability and the existing literature has studied extensively on a seasonal scale, relatively less research has been geared toward analyzing it at monthly. In this study, the interannual variation in Tanzanian long rains was investigated on a monthly time scale. The study found that in March and April, the enhanced (reduced) surface westerly winds from the Congo basin occur during wet (dry) years. These anomalies arise from a higher geopotential height (GPH) gradient over the Congo basin (western Indian Ocean (IO)) than over the western IO (Congo basin) for wet (dry) years. The westerly winds transport moist air from the Congo basin and act to decelerate the mean flow from the south IO, leading to substantial lower level convergence over Tanzania. In May, surface southwesterly (southeasterly) winds play significant role in modulate rainfall amount in wet (dry) years. The lower-level high GPH anomalies over western IO appears to be related to an enhanced subsidence from upper levels, leading to below–normal rainfall in March to May. Likewise, rainfall anomalies over Tanzania are connected with upper level GPH anomalies over Madagascan region suggesting tropical–subtropical interactions. Overall, this study stresses the atmospheric circulations anomalies related to each monthly rainfall. This would enhance our understanding of climate drivers that control the seasonal rainfall to improve the fidelity of long rains prediction, thereby minimizing its associated disasters.

Suggested Citation

  • Laban Lameck Kebacho, 2022. "Interannual variations of the monthly rainfall anomalies over Tanzania from March to May and their associated atmospheric circulations anomalies," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 112(1), pages 163-186, May.
    • Handle: RePEc:spr:nathaz:v:112:y:2022:i:1:d:10.1007_s11069-021-05176-9
    DOI: 10.1007/s11069-021-05176-9
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s11069-021-05176-9
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1007/s11069-021-05176-9?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Laban Lameck Kebacho, 2021. "Anomalous circulation patterns associated with 2011 heavy rainfall over northern Tanzania," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 109(3), pages 2295-2312, December.
    2. Lu, Shibao & Bai, Xiao & Li, Wei & Wang, Ning, 2019. "Impacts of climate change on water resources and grain production," Technological Forecasting and Social Change, Elsevier, vol. 143(C), pages 76-84.
    3. Marie Adolatha Umutoni & Lovina Peter Japheth & Elias Julius Lipiki & Laban Lameck Kebacho & Paul Tilwebwa Shelleph Limbu & Exavery Kisesa Makula, 2021. "Investigation of the 2016 March to May extreme rainfall over Rwanda," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 108(1), pages 607-618, August.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Song, Yuegang & Zhang, Bicheng & Wang, Jianhua & Kwek, Keh, 2022. "The impact of climate change on China's agricultural green total factor productivity," Technological Forecasting and Social Change, Elsevier, vol. 185(C).
    2. Samira Shayanmehr & Jana Ivanič Porhajašová & Mária Babošová & Mahmood Sabouhi Sabouni & Hosein Mohammadi & Shida Rastegari Henneberry & Naser Shahnoushi Foroushani, 2022. "The Impacts of Climate Change on Water Resources and Crop Production in an Arid Region," Agriculture, MDPI, vol. 12(7), pages 1-22, July.
    3. Ziming Zhou & Zhiming Yu & Haitao Wu, 2022. "Climate Shocks, Household Resource Allocation, and Vulnerability to Poverty," Agriculture, MDPI, vol. 12(7), pages 1-16, July.
    4. Xiaona Li & Xiaosheng Wang & Haiying Guo & Weimin Ma, 2020. "Multi-Water Resources Optimal Allocation Based on Multi-Objective Uncertain Chance-Constrained Programming Model," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 34(15), pages 4881-4899, December.
    5. Lu, Wenjing & Li, Wei & Lin, Ji, 2022. "Damping effects of water and land constraints on economic growth in basin economic zones," Resources Policy, Elsevier, vol. 79(C).
    6. Lu, Shibao & Lu, Wenjing & Shao, Wei & Xue, Yangang & Taghizadeh-Hesary, Farhad, 2021. "The transboundary ecological compensation construction based on pollution rights: Ways to keep the natural resources sustained," Resources Policy, Elsevier, vol. 74(C).
    7. Jihong Qu & Xiao Bai & Jiajun Gu & Farhad Taghizadeh-Hesary & Ji Lin, 2020. "Assessment of Rough Set Theory in Relation to Risks Regarding Hydraulic Engineering Investment Decisions," Mathematics, MDPI, vol. 8(8), pages 1-9, August.
    8. Lu, Shibao & Bai, Xiao & Zhang, Jin & Li, Jinkai & Li, Wei & Lin, Ji, 2022. "Impact of virtual water export on water resource security associated with the energy and food bases in Northeast China," Technological Forecasting and Social Change, Elsevier, vol. 180(C).
    9. Lu, Shibao & Jiang, Yue & Deng, Weisheng & Meng, Xu, 2023. "Energy and food production security under water resources regulation in the context of green development," Resources Policy, Elsevier, vol. 80(C).
    10. Shibao Lu & Xiaoling Zhang & Yao Tang, 2020. "Evolutionary analysis on structural characteristics of water resource system in basins of Northern China," Sustainable Development, John Wiley & Sons, Ltd., vol. 28(4), pages 800-812, July.
    11. Lianjie Wang & Yao Tang & Farnaz Roshanmehr & Xiao Bai & Farzad Taghizadeh-Hesary & Farhad Taghizadeh-Hesary, 2021. "The Health Status Transition and Medical Expenditure Evaluation of Elderly Population in China," IJERPH, MDPI, vol. 18(13), pages 1-14, June.
    12. Lu, Shibao & Lu, Wenjing & Xu, Meng & Taghizadeh-Hesary, Farhad & Tang, Yao, 2023. "Water-energy-food security under green finance constraints in Southwest China," Energy Economics, Elsevier, vol. 118(C).
    13. Xu, Haitao & Pan, Xiongfeng & Guo, Shucen & Lu, Yuduo, 2021. "Forecasting Chinese CO2 emission using a non-linear multi-agent intertemporal optimization model and scenario analysis," Energy, Elsevier, vol. 228(C).
    14. Jingdong Li & Qingning Lin, 2022. "Can the Adjustment of China’s Grain Purchase and Storage Policy Improve Its Green Productivity?," IJERPH, MDPI, vol. 19(10), pages 1-24, May.
    15. Ye, Liping, 2022. "The effect of climate news risk on uncertainties," Technological Forecasting and Social Change, Elsevier, vol. 178(C).
    16. Olimjon Saidmamatov & Nicolas Tetreault & Dilmurad Bekjanov & Elbek Khodjaniyazov & Ergash Ibadullaev & Yuldoshboy Sobirov & Lugas Raka Adrianto, 2023. "The Nexus between Agriculture, Water, Energy and Environmental Degradation in Central Asia—Empirical Evidence Using Panel Data Models," Energies, MDPI, vol. 16(7), pages 1-20, April.
    17. Liang Chen & Mingxiang Yang & Xuan Liu & Xing Lu, 2022. "Attribution and Sensitivity Analysis of Runoff Variation in the Yellow River Basin under Climate Change," Sustainability, MDPI, vol. 14(22), pages 1-21, November.
    18. Yan Zhang & Xiaoyong Lu, 2022. "A Comprehensive Evaluation of Food Security in China and Its Obstacle Factors," IJERPH, MDPI, vol. 20(1), pages 1-17, December.
    19. Tiantian Ma & Qingbai Hu & Changle Wang & Jungang Lv & Changhong Mi & Rongguang Shi & Xiaoli Wang & Yanying Yang & Wenhao Wu, 2022. "Exploring the Relationship between Ecosystem Services under Different Socio-Economic Driving Degrees," IJERPH, MDPI, vol. 19(23), pages 1-17, December.
    20. Zhuohui Yu & Shiping Mao & Qingning Lin, 2022. "Has China’s Carbon Emissions Trading Pilot Policy Improved Agricultural Green Total Factor Productivity?," Agriculture, MDPI, vol. 12(9), pages 1-21, September.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:nathaz:v:112:y:2022:i:1:d:10.1007_s11069-021-05176-9. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.