Yang Qike, Wu Xiaoqing, Han Yajuan, Qing Chun, Wu Su, Su Changdong, Wu Pengfei, Zhang Shitai
Opt Express. 2021 Oct 25;29(22):35238-35246. doi: 10.1364/OE.439816.
A model for estimating astronomical seeing at Kunlun Station (Dome A, Antarctica) is proposed. This model is based on the Tatarskii equation, using the wind shear and temperature gradient as inputs, and a seeing model depending directly on the weather data is provided. The seeing and near-ground weather data to build and validate the proposed seeing model were measured at Dome A during the summer of 2019. Two calculation methods were tested from the measured weather data relating the wind shear and temperature gradient to a combination of the two levels for the boundary layer. Both methods performed well, with correlation coefficients higher than 0.77. The model can capture the main seeing trends in which the seeing becomes small when weak wind speed and strong temperature inversion occur inside the boundary layer.
提出了一种估算昆仑站（南极冰穹A）天文视宁度的模型。该模型基于塔塔尔斯基方程，将风切变和温度梯度作为输入，并提供了一种直接依赖于气象数据的视宁度模型。用于构建和验证所提出视宁度模型的视宁度和近地面气象数据于2019年夏季在冰穹A进行了测量。从测量的气象数据中测试了两种计算方法，这些数据将风切变和温度梯度与边界层两个高度的组合相关联。两种方法都表现良好，相关系数高于0.77。该模型能够捕捉到主要的视宁度趋势，即当边界层内风速较弱且温度逆温较强时，视宁度会变小。
