Zhenzhan Wang
YOU?
Author Swipe
View article: Analysis of resampling error of FY-3D/MWRI at different orbital positions
Analysis of resampling error of FY-3D/MWRI at different orbital positions Open
中国风云三号(FY3)卫星是国际气象组织组网卫星之一,其搭载的微波成像仪(MWRI)可为气象研究、天气预报等多个领域提供有效数据。在应用MWRI数据进行多频率探测通道的协同反演时,必须考虑通过重采样来使不同探测频点的数据具有一致的空间分辨率。Backus-Gilbert(BG)方法是一种被广泛用于星载微波辐射计亮温数据重采样的方法。传统重采样方式应用BG方法计算辐射计单次旋转扫描得到的采样点的权重系数(预计算权重系数),并将其直接应用到所有旋转扫描获取的采样点上,进而完成全…
View article: A New Deep-Learning-Based Framework for Ice Water Path Retrieval From Microwave Humidity Sounder-II Aboard FengYun-3D Satellite
A New Deep-Learning-Based Framework for Ice Water Path Retrieval From Microwave Humidity Sounder-II Aboard FengYun-3D Satellite Open
The derivation of ice water path (IWP) from microwave radiometer measurements is challenging. This study presents a deep learning framework for global retrieval of IWP using observations from the Microwave Humidity Sounder-II (MWHS-II) abo…
View article: A Spatial Resolution Enhancement Method of Microwave Radiation Imager Data Based on Data Matching and Transformer
A Spatial Resolution Enhancement Method of Microwave Radiation Imager Data Based on Data Matching and Transformer Open
The microwave radiation imager (MWRI) onboard the Fengyun-3D satellite can provide valuable observation data in many fields such as meteorological research and weather forecasting. However, its coarse spatial resolution limits data applica…
View article: Feasibility analysis of optimal terahertz (THz) bands for passive limb sounding of middle and upper atmospheric wind
Feasibility analysis of optimal terahertz (THz) bands for passive limb sounding of middle and upper atmospheric wind Open
As of now, direct measurements of middle and upper atmospheric wind are still scarce, and the observation method is limited, especially for the upper stratosphere and lower mesosphere. This paper presents a study of band selection to deriv…
View article: Feasibility Analysis of Optimal THz bands for passive limb sounding of middle and upper atmospheric wind
Feasibility Analysis of Optimal THz bands for passive limb sounding of middle and upper atmospheric wind Open
As of now, direct measurements of middle and upper atmospheric wind are still scarce, and the observation method is limited, especially for the upper stratosphere and lower mesosphere. A new method to derive line-of-sight wind from 30 to m…
View article: A Terahertz Low Scan Loss High Gain Beam Steering Transmitarray
A Terahertz Low Scan Loss High Gain Beam Steering Transmitarray Open
This paper presents a terahertz high gain beam steering transmitarray antenna (BSTA) working at 340 GHz.Substrateless double hexagon ring slots unit-cells which present low loss characteristics at THz band are used to constitute the layout…
View article: Analysis of the Effect of Enhanced FOV and Sampling Strategy on the Spatial Resolution Enhancement of Spaceborne Microwave Radiometer
Analysis of the Effect of Enhanced FOV and Sampling Strategy on the Spatial Resolution Enhancement of Spaceborne Microwave Radiometer Open
Higher spatial resolution can improve the application ability of spaceborne microwave radiometer data. To investigate the capability to enhance the spatial resolution of the radiometer measurements, we analyzed the effect of enhanced field…
View article: Sensitivity Analysis of Microwave Spectrometer for Atmospheric Temperature and Humidity Sounding on the New Generation Fengyun Satellite
Sensitivity Analysis of Microwave Spectrometer for Atmospheric Temperature and Humidity Sounding on the New Generation Fengyun Satellite Open
The vertical profiles, spatiotemporal distribution, and trends of temperature and humidity in the middle atmosphere are significant for numerical weather prediction and the analysis of global climate change. To better design and apply spac…
View article: Retrieval of ice water path from the Microwave Humidity Sounder (MWHS) aboard FengYun-3B (FY-3B) satellite polarimetric measurements based on a deep neural network
Retrieval of ice water path from the Microwave Humidity Sounder (MWHS) aboard FengYun-3B (FY-3B) satellite polarimetric measurements based on a deep neural network Open
The ice water path (IWP) is an important cloud parameter in atmospheric radiation, and there are still great difficulties in its retrieval. Artificial neural networks have become a popular method in atmospheric remote sensing in recent yea…
View article: Microwave Emissivity of Typical Vegetated Land Types Based on AMSR2
Microwave Emissivity of Typical Vegetated Land Types Based on AMSR2 Open
To investigate the microwave radiation characteristics of different vegetation types, the “pure pixels” of 12 typical vegetated land types were selected and corresponding emissivity was retrieved under clear sky based on L1C AMSR2 observed…
View article: Sensitivity Testing of Microwave Temperature Sounder-II Onboard the Fengyun-3 Satellite to Sea Surface Barometric Pressure Based on Deep Neural Network
Sensitivity Testing of Microwave Temperature Sounder-II Onboard the Fengyun-3 Satellite to Sea Surface Barometric Pressure Based on Deep Neural Network Open
Sea surface barometric pressure contributes to calculating the surface transmissivity so that the observations of Microwave Temperature Sounder-II channels with non-zero surface transmissivity contain the sea surface barometric pressure in…
View article: Comparative Study of the 60 GHz and 118 GHz Oxygen Absorption Bands for Sounding Sea Surface Barometric Pressure
Comparative Study of the 60 GHz and 118 GHz Oxygen Absorption Bands for Sounding Sea Surface Barometric Pressure Open
The 60 GHz and 118 GHz oxygen absorption bands are prominent in the passive microwave remote sensing of atmospheric temperature, and also can be used for sounding sea surface barometric pressure (SSP). Microwave Temperature Sounder II (MWT…
View article: Comment on amt-2022-2
Comment on amt-2022-2 Open
Abstract. Ice water path (IWP) is an important cloud parameter in atmospheric radiation, and there are still great difficulties in retrieval. The artificial neural network is a popular method in atmospheric remote sensing in recent years. …
View article: Comment on amt-2022-2
Comment on amt-2022-2 Open
Abstract. Ice water path (IWP) is an important cloud parameter in atmospheric radiation, and there are still great difficulties in retrieval. The artificial neural network is a popular method in atmospheric remote sensing in recent years. …
View article: Retrieval of ice water path from the FY-3B MWHS polarimetric measurements based on deep neural network
Retrieval of ice water path from the FY-3B MWHS polarimetric measurements based on deep neural network Open
Ice water path (IWP) is an important cloud parameter in atmospheric radiation, and there are still great difficulties in retrieval. The artificial neural network is a popular method in atmospheric remote sensing in recent years. This study…
View article: Fusion Retrieval of Sea Surface Barometric Pressure from the Microwave Humidity and Temperature Sounder and Microwave Temperature Sounder-II Onboard the Fengyun-3 Satellite
Fusion Retrieval of Sea Surface Barometric Pressure from the Microwave Humidity and Temperature Sounder and Microwave Temperature Sounder-II Onboard the Fengyun-3 Satellite Open
Both the Microwave Humidity and Temperature Sounder (MWHTS) and the Microwave Temperature Sounder-II (MWTS-II) operate on the Fengyun-3 (FY-3) satellite platform, which provides an opportunity to retrieve the sea surface barometric pressur…
View article: A Digital-Simulation Model for a Full-Polarized Microwave Radiometer System and Its Calibration
A Digital-Simulation Model for a Full-Polarized Microwave Radiometer System and Its Calibration Open
A digital-correlation full-polarized microwave radiometer is an important passive remote sensor, as it can obtain the amplitude and phase information of an electromagnetic wave at the same time. It is widely used in the measurement of sea …
View article: Effect Analysis of the Digital Spectrometer FFT Algorithm on THz Atmospheric Limb Sounder (TALIS) System Sensitivity
Effect Analysis of the Digital Spectrometer FFT Algorithm on THz Atmospheric Limb Sounder (TALIS) System Sensitivity Open
THz Atmospheric Limb Sounder (TALIS) is a microwave radiometer designed by the National Space Science Center of the Chinese Academy of Sciences (NSSC, CAS) for measuring the vertical distribution of temperature and chemical constituents in…
View article: Application of the Deep Neural Network in Retrieving the Atmospheric Temperature and Humidity Profiles from the Microwave Humidity and Temperature Sounder Onboard the Feng-Yun-3 Satellite
Application of the Deep Neural Network in Retrieving the Atmospheric Temperature and Humidity Profiles from the Microwave Humidity and Temperature Sounder Onboard the Feng-Yun-3 Satellite Open
The shallow neural network (SNN) is a popular algorithm in atmospheric parameters retrieval from microwave remote sensing. However, the deep neural network (DNN) has a stronger nonlinear mapping capability compared to SNN and has great pot…
View article: Influence of Oceanic Parameters on Aquarius L-Band Sea Surface Emissivity
Influence of Oceanic Parameters on Aquarius L-Band Sea Surface Emissivity Open
A systematic assessment of the effects of various oceanic parameters on sea surface emissivity based on Aquarius measurements is presented in this paper. The results show that the influence of wind speed on wind-driven emissivity increment…
View article: Retrieval of Melt Pond Fraction over Arctic Sea Ice during 2000–2019 Using an Ensemble-Based Deep Neural Network
Retrieval of Melt Pond Fraction over Arctic Sea Ice during 2000–2019 Using an Ensemble-Based Deep Neural Network Open
The accurate knowledge of variations of melt ponds is important for understanding the Arctic energy budget due to its albedo–transmittance–melt feedback. In this study, we develop and validate a new method for retrieving melt pond fraction…
View article: Preliminary Evaluation of the Error Budgets in the TALIS Measurements and Their Impact on the Retrievals
Preliminary Evaluation of the Error Budgets in the TALIS Measurements and Their Impact on the Retrievals Open
The THz Atmospheric Limb Sounder (TALIS) is a Chinese sub-millimeter limb sounder being designed by National Space Science Center of the Chinese Academy of Sciences to measure the temperature and chemical constituents vertically in the mid…
View article: Simulation of the Spectrum Response for the THz Atmosphere Limb Sounder (TALIS)
Simulation of the Spectrum Response for the THz Atmosphere Limb Sounder (TALIS) Open
The THz atmospheric limb sounder (TALIS) is a microwave radiometer developed by the National Space Science Center of the Chinese Academy of Sciences for the detection of atmospheric trace gases. The observation range of the instrument main…
View article: Performance evaluation of THz Atmospheric Limb Sounder (TALIS) of China
Performance evaluation of THz Atmospheric Limb Sounder (TALIS) of China Open
THz Atmospheric Limb Sounder (TALIS) is a microwave limb sounder being developed for atmospheric vertically resolved profile observations by the National Space Science Center, Chinese Academy of Sciences (NSSC, CAS). It is designed to meas…
View article: Investigation of spatiotemporal variability of melt pond fraction and its relationship with sea ice extent during 2000–2017 using a new data
Investigation of spatiotemporal variability of melt pond fraction and its relationship with sea ice extent during 2000–2017 using a new data Open
The accurate knowledge of variations of melt ponds is important for understanding Arctic energy budget due to its albedo-transmittance-melt feedback. In this study, we develop and validate a new method for retrieving melt pond fraction (MP…
View article: Performance Evaluation of THz Atmospheric Limb Sounder (TALIS) of China
Performance Evaluation of THz Atmospheric Limb Sounder (TALIS) of China Open
THz Atmospheric Limb Sounder (TALIS) is a microwave limb sounder being developed for atmospheric high precision observation by the National Space Science Center, Chinese Academy of Sciences (NSSC, CAS). It is designed to measure the temper…
View article: Tropical Cyclone Rain Retrievals from FY-3B MWRI Brightness Temperatures Using the Goddard Profiling Algorithm (GPROF)
Tropical Cyclone Rain Retrievals from FY-3B MWRI Brightness Temperatures Using the Goddard Profiling Algorithm (GPROF) Open
This study focuses on the tropical cyclone rainfall retrieval using FY-3B Microwave Radiation Imager (MWRI) brightness temperatures (Tbs). The GPROF, a fully parametric approach based on the Bayesian scheme, is adapted for use by the MWRI …
View article: Tropical Cyclone Rainfall Estimates from FY-3B MWRI Brightness Temperatures Using the WS Algorithm
Tropical Cyclone Rainfall Estimates from FY-3B MWRI Brightness Temperatures Using the WS Algorithm Open
A rainfall retrieval algorithm for tropical cyclones (TCs) using 18.7 and 36.5 GHz of vertically and horizontally polarized brightness temperatures (Tbs) from the Microwave Radiation Imager (MWRI) is presented. The beamfilling effect is co…
View article: Comparison of the Retrieval of Sea Surface Salinity Using Different Instrument Configurations of MICAP
Comparison of the Retrieval of Sea Surface Salinity Using Different Instrument Configurations of MICAP Open
The Microwave Imager Combined Active/Passive (MICAP) has been designed to simultaneously retrieve sea surface salinity (SSS), sea surface temperature (SST) and wind speed (WS), and its performance has also been preliminarily analyzed. To d…
View article: Comparison of Wind Speeds from Spaceborne Microwave Radiometers with In Situ Observations and ECMWF Data over the Global Ocean
Comparison of Wind Speeds from Spaceborne Microwave Radiometers with In Situ Observations and ECMWF Data over the Global Ocean Open
This study compares wind speeds derived from five satellite microwave radiometers with those directly observed by buoy-mounted anemometers and the global analyses produced by the European Center for Medium-Range Weather Forecasts (ECMWF) m…