亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Retrieval of high spatial resolution precipitable water vapor maps using heterogeneous earth observation data

遥感 可降水量 地球观测 水蒸气 环境科学 图像分辨率 气象学 地质学 卫星 计算机科学 地理 物理 人工智能 天文
作者
Xiongwei Ma,Yibin Yao,Zhejing Bao,Changyong Hé
出处
期刊:Remote Sensing of Environment [Elsevier]
卷期号:278: 113100-113100 被引量:16
标识
DOI:10.1016/j.rse.2022.113100
摘要

The determination of the amount of precipitable water vapor (PWV) from global navigation satellite system (GNSS) is restricted to a limited number of ground-based stations with low spatial resolution. The PWV obtained by the multi-source data fusion method has a low spatial resolution because of the low spatial resolution of the data used. Therefore, it is difficult to retrieve PWV maps with sub-km resolution. Therefore, retrieving PWV with high spatial resolution becomes the focus of this study. A dual-scale method for retrieving PWV maps, based on heterogeneous earth data, is proposed, which can obtain sub-kilometer resolution PWV, while maintaining accuracy. First, an approach for analyzing the spatial correlation between land cover types (LCT) and ground-based PWV was proposed, and the meteorological, ecological, topographic, and LCT variables affecting changes in PWV in the near-earth atmosphere were determine, Subsequently, three different regression models, including multiple linear regression (MLR), random forest (RF), and a generalized regression neural network (GRNN), were used to construct the functional model linking heterogeneous earth observation data and ground-based GNSS-derived PWV. Finally, the PWV map with sub-kilometer resolution was generated based on the dual-scale method. Unlike the PWV obtained by data fusion and remote sensing technology, the proposed dual-scale retrieval method can generate PWV maps at 300 m spatial resolution. Statistical analyses demonstrated that the RMS of the PWV derived from the proposed method was less than 2.2 mm, and the bias was close to 0, thereby filling the gap in the sub-kilometer high-precision PWV products. • Spatial correlation between land cover types and GNSS PWV was analyzed firstly. • The functional relationship between heterogeneous data and GNSS PWV is established. • A dual-scale approach for retrieving PWV with sub-kilometer resolution is proposed. • The RMS of dual-scale PWV was less than 2.2 mm, and the bias was close to 0.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
阿菜完成签到,获得积分10
1秒前
My_opt完成签到,获得积分10
3秒前
小点点发布了新的文献求助10
4秒前
CGDGD完成签到,获得积分10
5秒前
5秒前
重要冥茗发布了新的文献求助30
5秒前
与其会意发布了新的文献求助10
12秒前
魏行方完成签到 ,获得积分10
15秒前
科目三应助小虎采纳,获得10
17秒前
大鸭子完成签到 ,获得积分10
22秒前
h0jian09完成签到,获得积分10
24秒前
30秒前
众生平等发布了新的文献求助10
35秒前
40秒前
潮人完成签到 ,获得积分10
43秒前
44秒前
48秒前
重要冥茗完成签到,获得积分10
51秒前
梦鱼完成签到,获得积分10
1分钟前
1分钟前
Hello应助小点点采纳,获得10
1分钟前
1分钟前
科研通AI2S应助弧线采纳,获得10
1分钟前
1分钟前
零零柒完成签到 ,获得积分10
1分钟前
1分钟前
众生平等发布了新的文献求助10
1分钟前
NS完成签到,获得积分10
1分钟前
烟花应助Sophist采纳,获得10
1分钟前
李爱国应助AlanLi采纳,获得10
1分钟前
小点点发布了新的文献求助10
1分钟前
酷波er应助科研通管家采纳,获得10
1分钟前
天天快乐应助科研通管家采纳,获得10
1分钟前
乐乐应助科研通管家采纳,获得30
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
andrele应助科研通管家采纳,获得10
1分钟前
顾矜应助科研通管家采纳,获得10
1分钟前
汉堡包应助科研通管家采纳,获得10
1分钟前
1分钟前
高分求助中
Evolution 3rd edition 1500
保险藏宝图 1000
Lire en communiste 1000
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 700
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 700
Mathematics and Finite Element Discretizations of Incompressible Navier—Stokes Flows 500
A new species of Coccus (Homoptera: Coccoidea) from Malawi 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3183668
求助须知:如何正确求助?哪些是违规求助? 2833619
关于积分的说明 7995225
捐赠科研通 2495945
什么是DOI,文献DOI怎么找? 1331799
科研通“疑难数据库(出版商)”最低求助积分说明 636425
邀请新用户注册赠送积分活动 603582