1988年至2018年的三十年间,印度的日照时间的时空空间趋势
Arti Choudhary1, Bharat Ji Mehrotra1, Atul K Srivastava2
1Department of Geophysics, Institute of Science, Banaras Hindu University (BHU), Varanasi, India.
Scientific reports
|October 2, 2025
概括
印度各地的日照时间正在减少,大多数地区的年度趋势为负. 一些地区经历季节性变化,但在过去的三十年中,总体阳光持续时间正在减少.
科学领域:
- 大气科学 大气科学
- 气候学 气候学 气候学
- 环境科学 环境科学
背景情况:
- 阳光持续时间是影响气候和太阳能潜力的关键因素.
- 了解日照时间的时间和空间趋势对于气候变化影响评估至关重要.
研究的目的:
- 从1988年到2018年,分析印度不同地理区域的日照时间的时间和空间趋势.
- 确定日照时间趋势的区域差异及其潜在驱动因素.
主要方法:
- 分析了印度9个地理区域的20个站点的月度阳光小时 (SSH) 数据.
- 应用趋势分析技术来评估SSH的年度和季节性变化.
- 调查阳光持续时间的年内异常.
主要成果:
- 在所有分析的地区观察到每年阳光照射时间的显著下降,下降的速度各不相同.
- 每个月的分析显示出不同的模式,大多数地区从10月到5月呈现增长,从6月到7月呈现下降.
- 东北地区在季风和季风后季节SSH出现了轻微的季节性平衡,与整体下降趋势形成鲜明对比.
结论:
- 印度正在经历所有时间尺度上的日照时间持续下降.
- 区域气象变化可能会影响当地阳光趋势,导致像东北地区这样的例外.
- 这些发现强调了需要进一步研究日照减少的驱动因素及其对太阳能和气候的影响.
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