基于MODIS数据和辅助信息的1公里全天红斑紫外线辐射和日剂量估算：算法开发、全球产品生成和精度评估

IF 11.4 1区地球科学 Q1 ENVIRONMENTAL SCIENCES

Remote Sensing of Environment Pub Date : 2025-10-07 DOI:10.1016/j.rse.2025.115021

Tao He , Jiaxuan Han , Shunlin Liang , Yichuan Ma , Xiaotong Zhang , Xiang Zhao , Longping Si

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引用次数: 0

摘要

紫外线辐射在维持生态系统平衡方面起着至关重要的作用，对人体健康既有有益的影响，也有有害的影响。红斑紫外线辐射（UVER）是UVA和UVB辐射的加权总和，与人类皮肤癌直接相关。虽然卫星观测提供了监测全球紫外线辐射的有用工具，但目前的全球卫星产品存在诸如空间/时间分辨率粗糙和空间/时间连续性差等局限性。为了解决这一问题，我们提出了一种新的方法，通过建立UVER与向下短波辐射（DSR）、总臭氧柱（TOC）、太阳天顶角（SZA）和海拔之间的实用参数模型来估计全天UVER。为了提高高反射表面上UVER估计的精度，提出了一种多重散射校正算法。对全球49个地面站的UVER估算结果进行了验证，显示出较高的精度，R2 = 0.86, RMSE = 607.92 J/m2∙day，相对RMSE = 23.97%, MBE = -81.32 J/m2∙day，相对MBE = - 3.76%。基于该方法，开发了2005-2022年无缝全球陆地高分辨率（1 km）全天日剂量UVER （EDD）产品，作为全球陆地表面卫星（GLASS）产品套件的新成员。在挪威的8个地点对该产品进行独立验证，结果表明该产品具有较高的准确度，R2 = 0.93, RMSE = 281.50 J/m2∙day，相对RMSE = 19.47%, MBE = 37.91 J/m2∙day，相对MBE = 3.84%。该产品与多个全球UVER产品进行了比较，在1°× 1°分辨率下显示出相当的精度和时空分布。1公里分辨率的GLASS EDD产品在空间和时间上是连续的，并且免费向公众提供，因此适用于需要高空间分辨率和精度的气候和人类健康相关应用。

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Estimation of 1 km all-sky erythemal ultraviolet radiation and daily dose based on MODIS data and ancillary information: algorithm development, global product generation, and accuracy assessment

Ultraviolet (UV) radiation plays a vital role in maintaining ecosystem balance and can have both beneficial and harmful effects on human health. Erythemal UV radiation (UVER), which is a weighted sum of UVA and UVB radiation, is directly linked to skin cancer in humans. Although satellite observations offer a useful tool to monitor UV radiation globally, current global satellite products have limitations such as coarse spatial/temporal resolutions and poor spatial/temporal continuity. To address this issue, we proposed a novel method to estimate all-sky UVER by establishing a practical parametric model between UVER and downward shortwave radiation (DSR), total ozone column (TOC), solar zenith angle (SZA), and elevation. A multiple scattering correction algorithm was also developed to improve the accuracy of UVER estimation over highly reflective surfaces. The UVER estimation was validated against 49 ground stations worldwide and showed high accuracy with R² = 0.86, RMSE = 607.92 J/m²∙day, relative RMSE = 23.97 %, MBE = -81.32 J/m²∙day, relative MBE = -3.76 %. Based on the proposed method, a seamless global land high-resolution (1 km) all-sky daily dose of UVER (EDD) product during 2005–2022 was developed as a new member of the Global Land Surface Satellites (GLASS) product suite. Additional independent validation of this product was conducted with 8 sites located in Norway, showing a high accuracy with R² = 0.93, RMSE = 281.50 J/m²∙day, relative RMSE = 19.47 %, MBE = 37.91 J/m²∙day, relative MBE = 3.84 %. The product was compared with multiple global UVER products and showed comparable accuracy and spatiotemporal distributions at 1° × 1° resolution. The 1 km resolution GLASS EDD product is spatially and temporally continuous and freely available to the public, and thus suitable for climate and human health related applications that require high spatial resolution and accuracy.

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来源期刊

Remote Sensing of Environment 环境科学-成像科学与照相技术

CiteScore

25.10

自引率

8.90%

发文量

455

审稿时长

53 days

期刊介绍： Remote Sensing of Environment (RSE) serves the Earth observation community by disseminating results on the theory, science, applications, and technology that contribute to advancing the field of remote sensing. With a thoroughly interdisciplinary approach, RSE encompasses terrestrial, oceanic, and atmospheric sensing. The journal emphasizes biophysical and quantitative approaches to remote sensing at local to global scales, covering a diverse range of applications and techniques. RSE serves as a vital platform for the exchange of knowledge and advancements in the dynamic field of remote sensing.