• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Radiation Symposium >SNOW PRODUCTS DERIVED FROM ADEOS-II/GLI DATA: SCIENTIFIC IMPLICATION
【24h】

SNOW PRODUCTS DERIVED FROM ADEOS-II/GLI DATA: SCIENTIFIC IMPLICATION

机译：来自ADEOS-II / GLI数据的雪产品：科学意蕴

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Global maps of snow grain size and mass concentration of snow impurities were made from April to October in 2004 with ADEOS-II/GLI data. For the calibration of the sensor and validation of the algorithms, several field campaigns were carried out in Alaska and eastern Hokkaido, Japan. Based on snow pit work, the retrieved snow grain size using the channels at 0.46(mu)m and 0.865 (mu)m agreed with the measured values averaged over a snow layers from surface to several-centimeter depth. However, the satellite-derived grain sizes from 1.64 (mu)m-channel were generally smaller than those measured at the ground. The mass concentration of snow impurities retrieved from the satellite data was lower than the measured one. This is because snow impurities are assumed to be soot in the remote sensing algorithm, whereas the main composition of in situ measured impurities was generally found to be mineral dust in our sites. Our snow pit work conducted as a part of routine field experiment for GLI sciences, indicated that snow grain size and concentration of snow impurities are crucially important factors determining broadband snow albedo. An increase in snow grain size with snow surface temperature was also clearly shown both from this routine field experiment and GLI data.
机译：2004年4月至10月，由Adeos-II / GLI数据从2004年4月到10月制作了雪粒大小和雪杂质大众浓度的全球地图。为了校准传感器和算法的验证，在阿拉斯加和日本东北海道进行了几个场地运动。基于雪坑工作，使用0.46（mu）m和0.865（mu）M的通道检索的雪粒尺寸同意，测量值在从表面到几厘米深度的冰层上平均。然而，从1.64（mu）m沟道的卫星衍生的粒度通常小于在地面上测量的颗粒。从卫星数据检索的雪杂质的质量浓度低于测量的雪杂质。这是因为雪杂质被认为是遥感算法中的烟灰，而原位测量的杂质的主要成分通常被发现是我们位点中的矿物粉尘。我们的雪坑作品作为Gli Sciences的常规场实验的一部分，表明雪粒尺寸和雪杂质的浓度是重要的重要因素，决定宽带雪玻璃。来自该常规场实验和GLI数据，也清楚地示出了具有雪表面温度的雪粒尺寸的增加。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号