【解决办法】在加载天空盒前需要先关闭环绕地球边缘的蓝天和光晕效果：viewer.scene.skyAtmosphere.show = false;
示例代码如下：
viewer.scene.skyAtmosphere.show = false;//关闭环绕地球边缘的蓝天和光晕效果
//创建天空盒
let hdrSkyBox = new SuperMap3D.SkyBox({
imageUrl: './images/SkyBox/panorama/HDR_night_4K.hdr'
})
hdrSkyBox.WSpeed = 5;
hdrSkyBox.show = true;
scene.skyBox = hdrSkyBox;
