Using the Hubble Space Telescope, Saturn was observed in 2018, 2019, and 2020, just after the northern hemisphere summer solstice. Analysis of multispectral imaging data reveals three years of cloud changes associated with a 70 N storm that began in 2018. Additionally, there is an increase in equatorial brightness and perhaps haze optical depth at 0 to 7 N. There are small midsummer changes at the north pole, with a thin blue feature near the polar hexagon’s outer edge disappearing between 2019 and 2020 and increasingly reddish polar haze. Zonal winds at most latitudes remain close to values obtained by the Cassini mission with a slight increase of winds in the equatorial zone. Yearly cloud changes, while noticeable, are small compared with the changes observed between the Voyager (northern spring) and Cassini (southern summer to northern spring) eras, but further observations will provide a longer baseline for comparison.

使用哈勃太空望远镜，在北半球夏至之后的2018年，2019年和2020年观测到了土星。对多光谱成像数据的分析显示，与2018年开始的70 N暴风雨有关的三年云层变化。此外，赤道亮度增加，并且可能在0至7 N处出现雾霾光学深度。北半球的仲夏变化很小极，在极六边形的外边缘附近有淡蓝色的特征在2019年至2020年之间消失，极地雾度逐渐变红。在大多数纬度，纬向风保持接近卡西尼号任务获得的值，赤道带的风略有增加。每年的云变化虽然很明显，