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Cân bằng khối lượng của các tảng băng ở Nam Cực và Greenland được giám sát từ không gian
Tóm tắt
Dữ liệu vệ tinh đã tiết lộ rằng các tảng băng ở Greenland và Nam Cực đang thay đổi nhanh chóng do nhiệt độ không khí và biển ấm lên. Điều quan trọng là các quan sát từ trái đất giờ đây có thể được sử dụng để đo đạc cân bằng khối lượng tảng băng ở quy mô lục địa, điều này có thể giúp giảm bớt sự không chắc chắn về đóng góp của các tảng băng trong quá khứ, hiện tại và tương lai đối với mực nước biển toàn cầu. Sự ra mắt của các nhiệm vụ vệ tinh dành riêng cho các vùng cực đã dẫn đến những tiến bộ lớn trong việc đánh giá tốt hơn trạng thái của các tảng băng, mà kết hợp với các mô hình tảng băng đã làm sâu sắc thêm hiểu biết của chúng ta về các quá trình vật lý dẫn đến những thay đổi trong các đặc tính của tảng băng. Hiện nay đã có một hồ sơ vệ tinh dài ba thập kỷ về những thay đổi khối lượng ở Nam Cực và Greenland, và các nhiệm vụ vệ tinh mới đang được lên kế hoạch để tiếp tục lưu trữ hồ sơ này và phát triển khả năng quan sát của chúng ta, điều này là rất quan trọng khi các tảng băng vẫn là thành phần không chắc chắn nhất trong sự gia tăng mực nước biển trong tương lai. Trong bài báo này, chúng tôi xem xét các cơ chế dẫn đến những thay đổi về khối lượng của các tảng băng và mô tả công nghệ vệ tinh tân tiến được sử dụng để theo dõi cân bằng khối lượng của Greenland và Nam Cực, cung cấp cái nhìn tổng quan về những đóng góp của các quan sát từ trái đất đối với kiến thức của chúng ta về những khu vực rộng lớn và xa xôi này.
Từ khóa
#cân bằng khối lượng #tảng băng #vệ tinh #Nam cực #Greenland #quan sát trái đấtTài liệu tham khảo
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