通过云层对海面温度的卫星测量
1Remote Sensing Systems, 438 First Street, Suite 200, Santa Rosa, CA 95401, USA. College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA.
卫星微波放射测量提供了全天候海面温度 (SST) 测量,克服了红外传感器的云限制. 这项技术为海洋学研究和天气预报提供了宝贵的数据.
科学领域:
- 海洋学 海洋学 海洋学
- 遥感 遥感 遥感 遥感
- 气象学 天气学
背景情况:
- 海面温度 (SST) 是一个关键的气候变量.
- 红外SST测量受到云层覆盖的限制.
- 卫星微波放射测量为持续的SST监测提供了一个潜在的解决方案.
研究的目的:
- 评估卫星微波放射测量的能力,以测量SST.
- 为了将微波SST数据与传统测量进行比较.
- 为了突出微波SST数据的应用.
主要方法:
- 使用卫星微波放射测量来获取SST数据.
- 将卫星衍生的SST与现场海洋浮标数据进行比较.
- 分析因空间时间采样和温度差异 (皮肤与散装) 而导致的差异.
主要成果:
- 卫星微波放射测量在大多数天气条件下提供SST测量,与红外线方法不同.
- 在卫星和浮标测量之间观察到大约0.6°C的平方根平均差异.
- 差异的部分原因是采样不匹配和皮肤与散装温度差异.
结论:
- 卫星微波放射测量是一种强大的SST测量方法,与红外技术相比,它具有优势.
- 获得的数据对了解海洋动态和改善天气预报有价值.
- 进一步的研究可以改进检索算法,并扩大应用领域,如风强度预测.
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