Scholarlink

<p>Longwave radiation (LWR) is a critical factor in surface energy balance and greenhouse effect studies, and its accurate measurement is essential for understanding climate change. However, existing remote sensing-based LWR products still have room for improvement in terms of spatiotemporal coverage, resolution, and accuracy. To address this issue, we developed the LWR Component of the global Long-term Earth System spatiotemporally Seamless Radiation budget dataset (LessRad). LessRad provides high-resolution (0.05°, hourly) LWR components including longwave downward radiation (LWDR), longwave upward radiation (LWUR), and longwave net radiation (LWNR). It extends the temporal coverage to 41 years (1982–2022) and outperforms existing comparable products. For LWDR and LWUR, rigorous validation against 565 ground-based observation sites demonstrates high accuracy, with correlation coefficients (R) of 0.94 and 0.97, biases of –4.39 W/m<sup>2</sup> and –0.14 W/m<sup>2</sup>, and root mean square errors (RMSE) of 24.74 W/m<sup>2</sup> and 20.42 W/m<sup>2</sup>, respectively. The high quality and extensive coverage make the LessRad LWR dataset an invaluable resource for fine-scale analysis of global surface radiation dynamics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A 41-Year Global All-Sky Surface Longwave Radiation Components Dataset at 5 km and hourly Resolution

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月2日

查看全文
  • Yihan Du,
  • Shuo Wang,
  • Tianxing Wang,
  • Yi Zheng,
  • Yuyang Xian,
  • Dahui Li

摘要

Longwave radiation (LWR) is a critical factor in surface energy balance and greenhouse effect studies, and its accurate measurement is essential for understanding climate change. However, existing remote sensing-based LWR products still have room for improvement in terms of spatiotemporal coverage, resolution, and accuracy. To address this issue, we developed the LWR Component of the global Long-term Earth System spatiotemporally Seamless Radiation budget dataset (LessRad). LessRad provides high-resolution (0.05°, hourly) LWR components including longwave downward radiation (LWDR), longwave upward radiation (LWUR), and longwave net radiation (LWNR). It extends the temporal coverage to 41 years (1982–2022) and outperforms existing comparable products. For LWDR and LWUR, rigorous validation against 565 ground-based observation sites demonstrates high accuracy, with correlation coefficients (R) of 0.94 and 0.97, biases of –4.39 W/m2 and –0.14 W/m2, and root mean square errors (RMSE) of 24.74 W/m2 and 20.42 W/m2, respectively. The high quality and extensive coverage make the LessRad LWR dataset an invaluable resource for fine-scale analysis of global surface radiation dynamics.