Results 1 to 10 of about 8,094,665 (258)

A Novel Modeling Strategy of Weighted Mean Temperature in China Using RNN and LSTM [PDF]

Remote Sensing, 2021
In the meteorology of Global Navigation Satellite System, the weighted mean temperature (Tm) is a key parameter in the process of converting the zenith wetness delay into precipitable water vapor, and it plays an important role in water vapor monitoring.
Wenliang Gao, Jingxiang Gao, Liu Yang, Mingjun Wang, Wenhao Yao   +4 more
doaj   +5 more sources

Comparison of Weighted Mean Temperature in Greenland Calculated by Four Reanalysis Data

Remote Sensing, 2022
The weighted mean temperature ( Tm) is a critical parameter for precipitable water vapor (PWV) retrieval in global navigation satellite system (GNSS) meteorology.
Chengcheng Luo, Feng Xiao, Li Gong, Jintao Lei, Wenhao Li, Shengkai Zhang   +5 more
doaj   +4 more sources

Comprehensive Analysis and Validation of the Atmospheric Weighted Mean Temperature Models in China

Remote Sensing, 2022
Atmospheric weighted mean temperature (Tm) is a key parameter used by the Global Navigation Satellite System (GNSS) for calculating precipitable water vapor (PWV).
Yongjie Ma, Qingzhi Zhao, Kan Wu, Wanqiang Yao, Yang Liu, Zufeng Li, Yun Shi   +6 more
doaj   +4 more sources

Improving the Estimation of Weighted Mean Temperature in China Using Machine Learning Methods

Remote Sensing, 2021
As a crucial parameter in estimating precipitable water vapor from tropospheric delay, the weighted mean temperature (Tm) plays an important role in Global Navigation Satellite System (GNSS)-based water vapor monitoring techniques.
Zhangyu Sun, Bao Zhang, Yibin Yao
doaj   +4 more sources

Random Forest-Based Model for Estimating Weighted Mean Temperature in Mainland China

Atmosphere, 2022
The weighted mean temperature (Tm) is a vital parameter for converting zenith wet delay (ZWD) into precipitation water vapor (PWV) and plays an essential part in the Global Navigation Satellite System (GNSS) inversion of PWV.
Haojie Li, Junyu Li, Lilong Liu, Liangke Huang, Qingzhi Zhao, Lv Zhou   +5 more
doaj   +3 more sources

CGTV-Tm: A High-Accuracy Gridded Atmospheric Weighted Mean Temperature Model Coupling Surface Temperature and Water Vapor Pressure over China [PDF]

Sensors
The atmospheric weighted mean temperature (Tm) is critical for converting a zenith wet delay (ZWD) to precipitable water vapor (PWV). However, the existing Tm models still have certain limitations: Those driven by surface-measured parameters achieve high
Yaoshuang Zhang, Jian Mao
doaj   +2 more sources

A new Egyptian Grid Weighted Mean Temperature (EGWMT) model using hourly ERA5 reanalysis data in GNSS PWV retrieval [PDF]

Scientific Reports
Precise modeling of weighted mean temperature (T m ) is essential for Global Navigation Satellite System (GNSS) meteorology. In retrieving precipitable water vapor (PWV) from GNSS, T m is a crucial parameter for the conversion of zenith wet delay (ZWD ...
Ragab Elhady Sleem, Mohamed Amin Abdelfatah, Ashraf El-Kutb Mousa, Gamal Saber El-Fiky   +3 more
doaj   +2 more sources

An ERA5‐Based Model for Estimating Tropospheric Delay and Weighted Mean Temperature Over China With Improved Spatiotemporal Resolutions

Earth and Space Science, 2019
Tropospheric delay is an important error source in Global Navigation Satellite System (GNSS) positioning and can also be used in water vapor monitoring.
Zhangyu Sun, Bao Zhang, Yibin Yao
doaj   +2 more sources

Water Temperature Prediction Using Improved Deep Learning Methods through Reptile Search Algorithm and Weighted Mean of Vectors Optimizer

Journal of Marine Science and Engineering, 2023
Precise estimation of water temperature plays a key role in environmental impact assessment, aquatic ecosystems’ management and water resources planning and management. In the current study, convolutional neural networks (CNN) and long short-term memory (
Rana Muhammad Adnan Ikram, Reham R. Mostafa, Zhihuan Chen, Kulwinder Singh Parmar, Ozgur Kisi, Mohammad Zounemat-Kermani   +5 more
doaj   +3 more sources

An Improved Spatiotemporal Weighted Mean Temperature Model over Europe Based on the Nonlinear Least Squares Estimation Method

Remote Sensing, 2022
Weighted average temperature (Tm) plays a crucial role in global navigation satellite system (GNSS) precipitable water vapor (PWV) retrieval. Aiming at the poor applicability of the existing Tm models in Europe, in the article, we used observations from ...
Bingbing Zhang, Zhengtao Wang, Wang Li, Wei Jiang, Yi Shen, Yan Zhang, Shike Zhang, Kunjun Tian   +7 more
doaj   +3 more sources