Đánh giá biến động stress nhiệt ở thành phố Hà Nội

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Bích Thảo Đặng, Ngọc Hùng Đào, Lưu Thu Thuỷ Hoàng, Thị Thảo Trần

Ngôn ngữ: Vie

Ký hiệu phân loại: 551.6 Climatology and weather

Thông tin xuất bản: Tạp chí Khoa học trường Đại học Sư phạm Hà Nội, 2022

Mô tả vật lý: 115-122

Bộ sưu tập: Metadata

ID: 412646

Thêm vào giỏ Liên kết toàn văn

Hà Nội là đô thị lớn thứ 2 của Việt Nam, có tốc độ đô thị hoá nhanh, mật độ dân số cao và thu nhập của người dân tăng nhanh. Tuy nhiên do biến đổi khí hậu và sự đô thị hoá nên stress nhiệt diễn là ngày càng trầm trọng hơn, ảnh hưởng tiêu cực đến sức khoẻ cộng đồng. Nghiên cứu đã sử dụng phương pháp tính nhiệt độ hiệu dụng (ET) để đánh giá mức độ biến đổi theo không gian và thời gian của stress nhiệt tại thành phố Hà Nội trong giai đoạn 1961-2020. Kết quả tính toán giá trị ET cho thấy, ET trung bình nhiều năm ở mức hơi nóng, chủ yếu tập trung trong 3 tháng 6, 7, 8. Giá trị ET có xu thế tăng rõ rệt giai đoạn này. Trong đó, thời kì từ năm 1961 - 1997 hầu như không xuất hiện ET ở mức nóng, nhưng từ năm 1998 đến nay, số tháng ET ở mức nóng rất thường xuyên xuất hiện trong các tháng 6 và 7. Số tháng nóng ở khu vực trung tâm thành phố Hà Nội cao hơn nhiều các vùng xung quanh. Với xu thế như vậy trong tương lai, các tháng 6 và 7 sẽ luôn có ET sẽ ở mức nóng. Kết quả nghiên cứu là tài tư liệu hữu ích cho các cơ quan quản lí, ngành y tế để từ đó đưa ra các hành động cụ thể nhằm tăng cường hệ thống chăm sóc sức khoẻ, phát triển cơ sở hạ tầng, cung cấp thông tin cho cộng đồng về nguy cơ bị stress nhiệt., Tóm tắt tiếng anh, Hanoi is the second-largest city in Vietnam, with rapid urbanization, high population density and continuously increasing people's income. However, due to climate change and urbanization, heat stress is becoming more and more serious, affecting public health. This study used the method of calculating effective temperature (ET) to evaluate the spatial and temporal variation of heat stress in Hanoi city from the period 1961 to 2020. Calculation results of the ET value showed that the ET at the hot and fairly hot level was mainly concentrated in June, July, and August. ET tends to increase markedly over time. During the period 1961 - 1997, there was almost no hot ET, but from 1998 to the present, the number of hot ET months occurs frequently in June and July. The number of hot months in the downtown area of Hanoi is much higher than in the surrounding areas. With such a trend in the future, the months of June and July will always have hot ET. The research results are useful documents for management agencies and the health sector to take specific actions to strengthen the health care system, develop infrastructure, and inform the community about the risk of heat stress.

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