青藏高原标准大气数据集 （1981-2020 年平均）

青藏高原分区域动力降尺度数据集-标准年（TPSDD-Standard）是一个高空间-时间分辨率的网格数据集，用于整个青藏高原的陆地-大气交换过程和低层大气结构研究，并考虑到了青藏高原各分区域的气候特征。根据青藏高原上空500 hPa多年平均位势高度场，选取与该位势高度场空间相关系数最大的年份（2014年）作为标准年，它能粗略反映青藏高原大气多年平均状况。该数据时间分辨率为1小时，空间分辨率为5公里。数据集的气象要素包括近地表土地-空气交换参数，如向下/向上的长波/短波辐射通量、感热通量、潜热通量等。此外，还包括从地表到对流层顶的3维风、温度、湿度和气压的垂直分布。通过比较观测数据和最新的ERA5再分析数据，对该数据集进行了独立评估。结果表明了该数据集的准确性和优越性，为未来的气候变化研究提供了巨大的潜力。

The Tibetan Plateau Sub-regional Dynamic Downscaling Dataset - Standard Year (TPSDD-Standard) is a high spatiotemporal resolution grid dataset designed for research on land-atmosphere exchange processes and lower tropospheric structure across the entire Tibetan Plateau, while accounting for the climatic characteristics of each sub-region over the plateau. Based on the 500 hPa multi-year average geopotential height field over the Tibetan Plateau, the year 2014, which has the largest spatial correlation coefficient with this field, was selected as the standard year, as it roughly reflects the multi-year average atmospheric conditions over the Tibetan Plateau. This dataset has a temporal resolution of 1 hour and a spatial resolution of 5 km. Its meteorological elements include near-surface land-atmosphere exchange parameters, such as downward/upward longwave and shortwave radiative fluxes, sensible heat flux, latent heat flux, and others. In addition, it also covers the vertical distributions of 3-dimensional winds, temperature, humidity, and atmospheric pressure from the surface to the tropopause. This dataset was independently evaluated by comparing in-situ observational data and the latest ERA5 reanalysis data. The results verify its accuracy and superiority, demonstrating great potential for future climate change research.

搜集汇总

背景与挑战

背景概述

青藏高原标准大气数据集（1981-2020 年平均）是一个高时空分辨率的网格数据集，用于研究青藏高原的陆地-大气交换过程和低层大气结构。数据集以2014年作为标准年，时间分辨率为1小时，空间分辨率为5公里，包含近地表土地-空气交换参数和3维风、温度、湿度和气压的垂直分布。