Addressing Current Problems with Achieving Physical Consistency Across the Electromagnetic Spectrum Between Ice Crystal Models, Remote-Sensing, and Large-Scale Models
Addressing Current Problems with Achieving Physical Consistency Across the Electromagnetic Spectrum Between Ice Crystal Models, Remote-Sensing, and Large-Scale Models
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解决当前的问题，实现冰晶模型、遥感和大型模型之间电磁频谱的物理一致性
DOI：
10.1002/essoar.10509975.1
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Baran A
中科院分区：
文献类型：
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作者：
Baran A
在今后十年及以后，将有大量基于天基的卷云和冰云的主动和被动测量。这些测量将跨越电磁波谱，从紫外线到远红外，再到亚毫米，在后者的光谱区域没有当前的辐射观测。为了利用这些前所未有的高分辨率和类似光谱的测量，需要在整个电磁波谱中保持物理一致的冰晶模型，并且与天气和气候模型中的微物理假设一致。在冰晶模型、遥感和大尺度模型之间实现这种物理一致性以应对未来十年左右即将到来的测量所带来的挑战是有问题的。然而，为了提高天气和气候模式的预测质量，分别应对极端天气事件和气候变化，有必要克服这一困难。然而，卷云和冰云类型由冰晶组成，在云顶和云底的形状和大小都有很大的不同。毫不奇怪，由于形状和大小的这种可变性，很难获得在整个光谱上一致的模型，同时又与天气和气候模型中的微物理假设保持一致。在本次演讲中，为了解决上述问题，我们将利用飞机和卫星的高分辨率辐射测量，利用卷云冰晶的集合模型来一致地预测卷云从紫外线到远红外的辐射特性。在本分析中，利用了与天气和气候模型、遥感和原位质量幂律相一致的不同形状的粒度分布。在这里，需要改进的同时原位和飞机遥感的频谱特征横跨电磁频谱卷云将被强调。此外，本文还描述了一个新的冰晶模型的开发实例，该模型遵循与天气和气候模型一致的原位冰晶质量和面积幂律，并给出了一些初步结果，以帮助解决辐射问题。
During the forthcoming decade and beyond there will be a plethora of global space-based active and passive measurements of cirrus and ice cloud. These measurements will be across the electromagnetic spectrum, from the ultra-violet to the far-infrared, through to the sub-millimeter, where there are no current radiance observations in the latter spectral regions. To take advantage of these unprecedented high-resolution and spectral-like measurements, ice crystal models are required that are physically consistent throughout the electromagnetic spectrum, and which are consistent with microphysics assumptions in weather and climate models. Achieving such physical consistency between ice crystal models, remote-sensing, and large-scale models to meet the challenges posed by the forthcoming measurements over the next decade or so is problematic. However, it is necessary to overcome this difficulty to improve the predictive quality of weather and climate models to address extreme weather events and climate change, respectively. However, cirrus and ice cloud types consist of ice crystals that vary considerably both in shape and size between the cloud top and bottom. Not surprisingly, with such variability in the shapes and sizes, obtaining models that are coherent across the spectrum while at the same time being consistent with microphysics assumptions in weather and climate models is difficult. In this talk, to address the above issues, an approach using an ensemble model of cirrus ice crystals to predict consistently the observed radiative properties of cirrus from the ultra-violet to the far-infrared will be discussed using aircraft and satellite-based high-resolution radiance measurements. In this analysis, different shapes of the particle size distribution are utilized that are consistent with a weather and climate model, remote-sensing, and with an in-situ mass power law. Here, the need for improved simultaneous in-situ and aircraft remote-sensing spectral characterization of cirrus across the electromagnetic spectrum will be emphasized. Moreover, an example of the development of a new ice crystal model that follows in-situ ice crystal mass and area power laws, which are consistent with a weather and climate model is described, with some preliminary results, to help address the radiative issues.