...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Climate dynamics >An assessment of radiative flux biases in the climate forecast system model CFSv2
【24h】

An assessment of radiative flux biases in the climate forecast system model CFSv2

机译：气候预测系统模型中的辐射通量偏置评估CFSv2

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An extensive analysis of radiative flux biases in the Climate Forecast System Model Version 2 (CFSv2) is done. Annual mean and seasonal variations of biases at the surface and top of the atmosphere (TOA) are reported in the global domain. Large regional biases in shortwave (SW) and longwave (LW) radiation are observed over convectively active zones in the tropics. The relative contribution of various processes responsible for the reported biases is quantified. The poor simulation of clouds and inadequate representation of surface properties seem to be major contributors. Over certain regions, errors due to different processes add up, whereas, over other regions, errors tend to nullify each other. Surface and atmospheric variables taken as input parameters in the radiative transfer modules are compared with satellite-based observations. The maximum biases in SW and LW radiation are observed over the regions of persistent low clouds. The magnitude of the SW and LW biases at the TOA is in phase with the biases in cloud fraction by and large. However, the error in the radiative fluxes due to errors in surface radiative properties is of equal importance. The cold bias in near-surface air temperature reported in other studies may partly be attributed to an underestimation in the net SW radiation at the surface. In the present study, a plausible prescription is also provided to correct the source of the biases.
机译：完成了气候预测系统模型版本2（CFSv2）中的辐射通量偏置的广泛分析。在全球领域报告了大气层（TOA）的表面和顶部偏差的年平均值和季节变化。在热带地区的对流有源区观察到短波（SW）和长波（LW）辐射的大型区域偏差。量化负责报告的偏差的各种过程的相对贡献是量化的。云层差的模拟和表面属性的表达不足似乎是主要的贡献者。在某些地区，由于不同的进程而导致的错误加起来，而在其他区域上，错误往往会使彼此无效。将辐射转移模块中的输入参数拍摄的表面和大气变量与基于卫星的观察结果进行比较。在持久的低云区域上观察到SW和LW辐射的最大偏差。 ToA处的SW和LW偏差的大小与云分数的偏置相位，并且大。然而，由于表面辐射性能的误差导致的辐射通量中的误差具有相同的重要性。在其他研究中报道的近表面空气温度的冷偏压部分可以部分地归因于表面的净SW辐射中的低估。在本研究中，还提供了一种合理的处方来校正偏差的来源。

著录项

  • 来源
    《Climate dynamics》 |2021年第6期|1541-1569|共29页
  • 作者

    Kumar Siddharth; Phani R.; Mukhopadhyay P.; Balaji C.;

  • 作者单位

    Minist Earth Sci Indian Inst Trop Meteorol Pune Maharashtra India|Indian Inst Technol Chennai Tamil Nadu India;

    Minist Earth Sci Indian Inst Trop Meteorol Pune Maharashtra India;

    Minist Earth Sci Indian Inst Trop Meteorol Pune Maharashtra India;

    Indian Inst Technol Chennai Tamil Nadu India;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Radiation; CFS; Cloud; Bias; Physical process;

    机译：辐射;CFS;云;偏见;物理过程;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号