Đánh giá xu thế hạn khí tượng bằng phương pháp IPTA và chỉ số SPEI: ứng dụng cho tỉnh Trà Vinh
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Author
Từ khóa:
Hạn hán
SPEI
xu thế đa giác cải tiến (IPTA);
mưa - bốc hơi
Trà Vinh
Tóm tắt
Nghiên cứu tập trung vào việc đánh giá xu thế biến động hạn hán theo chỉ số chuẩn hóa mưa - bốc hơi (SPEI) 1 tháng (hạn khí tượng) bằng việc sử dụng phương pháp xu thế đa giác cải tiến (IPTA). Khu vực áp dụng tính toán điển hình là trạm Càng Long, khu vực tỉnh Trà Vinh. Kết quả cho thấy, biến đổi khí hậu làm gia tăng xu thế hạn hán ở tháng 2 và 4 ở giai đoạn 1985-2022. Đáng chú ý, mức độ hạn hán cực trị trong các tháng này đã chuyển từ mức hạn vừa (giai đoạn 1985-2004) sang mức hạn nặng trong giai đoạn 2005 đến 2022). Kết quả từ nghiên cứu nhằm cung cấp cơ sở khoa học giúp các nhà quản lý và chuyên gia trong việc đánh giá xu thế hạn phục vụ cho việc đề xuất giải pháp tăng cường nguồn nước tưới trong các tháng khô hạn Cho khu vực nghiên cứu điển hình, kết quả này còn phục vụ cho việc điều chỉnh cơ cấu sản xuất nông nghiệp phù hợp với xu thế hạn hán trong tương lai cho tỉnh Trà Vinh.
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Hòa, H. V., T. T. Kim, L. V. Thịnh, và N. T. Bảy. “Đánh Giá Xu Thế hạn Khí tượng bằng phương pháp IPTA Và chỉ số SPEI: ứng dụng Cho tỉnh Trà Vinh”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 23, số p.h 7, Tháng Bảy 2025, tr 75-81, doi:10.31130/ud-jst.2025.23(7).128.
