Xuejin Sun
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View article: A survey of snow growth signatures from tropics to Antarctica using triple-frequency radar observations
A survey of snow growth signatures from tropics to Antarctica using triple-frequency radar observations Open
Snow formation is a complex interplay of multiple microphysical growth processes, and the prevailing snow characteristics are inherently linked to local climate. However, the persistent shortage of observations for characterizing snow micr…
View article: Impact Mechanical Properties of Magnesium Alloy Structures with Annularly Distributed Multi-Sphere Point Contacts
Impact Mechanical Properties of Magnesium Alloy Structures with Annularly Distributed Multi-Sphere Point Contacts Open
When a high-speed rotating projectile faces high impact loads, the sensitive parts of the control system can get damaged, resulting in operational failure. It is crucial to develop a unique buffer structure that offers impact resistance an…
View article: Linkage Between Radar Reflectivity Slope and Raindrop Size Distribution in Precipitation with Bright Bands
Linkage Between Radar Reflectivity Slope and Raindrop Size Distribution in Precipitation with Bright Bands Open
This study investigates the linkage between the radar reflectivity slope and raindrop size distribution (DSD) in precipitation with bright bands through coordinated C-band/Ka-band radar and disdrometer observations in southern China. Preci…
View article: The Application of an Abaqus Preprocessor Based on Python Language in a DAHC Negative Poisson Ratio Structure
The Application of an Abaqus Preprocessor Based on Python Language in a DAHC Negative Poisson Ratio Structure Open
The double-arrow hollow cylinder (DAHC) has excellent mechanical properties under axial compression loads due to its negative Poisson ratio structure. To improve finite element simulation efficiency for parameter optimization analysis, an …
View article: Sub6 GHz Non‐Line‐of‐Sight Effects in Mobile Communications: A New Perspective for Rainfall Monitoring?
Sub6 GHz Non‐Line‐of‐Sight Effects in Mobile Communications: A New Perspective for Rainfall Monitoring? Open
Sub6 GHz non‐line‐of‐sight signals are a potential opportunistic source of rainfall information that promises to improve the current urgent need regarding near‐surface rainfall detection, but the complex mechanisms in which these signals a…
View article: Influence of Six-Degree-of-Freedom Motion of a Large Marine Data Buoy on Wind Speed Monitoring Accuracy
Influence of Six-Degree-of-Freedom Motion of a Large Marine Data Buoy on Wind Speed Monitoring Accuracy Open
In order to quantitatively analyze the data measurement accuracy of ocean buoys under normal and extreme sea conditions, in this study, we simulated the six-degree-of-freedom motion response of self-designed ocean buoys under different sea…
View article: A Method for Retrieving Cloud-Top Height Based on a Machine Learning Model Using the Himawari-8 Combined with Near Infrared Data
A Method for Retrieving Cloud-Top Height Based on a Machine Learning Model Using the Himawari-8 Combined with Near Infrared Data Open
Different cloud-top heights (CTHs) have different degrees of atmospheric heating, which is an important factor for weather forecasting and aviation safety. AHIs (Advanced Himawari Imagers) on the Himawari-8 satellite are a new generation o…
View article: Reliability Evaluation of the Joint Observation of Cloud Top Height by FY-4A and HIMAWARI-8
Reliability Evaluation of the Joint Observation of Cloud Top Height by FY-4A and HIMAWARI-8 Open
It is well known that the measurement of cloud top height (CTH) is important, and a geostationary satellite is an important measurement method. However, it is difficult for a single geostationary satellite to observe the global CTH, so joi…
View article: Relationship between wind observation accuracy and the ascending node of the sun-synchronous orbit for the Aeolus-type spaceborne Doppler wind lidar
Relationship between wind observation accuracy and the ascending node of the sun-synchronous orbit for the Aeolus-type spaceborne Doppler wind lidar Open
The launch and operation of the first spaceborne Doppler wind lidar (DWL), Aeolus, is of great significance for observing the global wind field. Aeolus operates on a sun-synchronous dawn–dusk orbit to minimize the negative impact of solar …
View article: Cloud Phase Recognition Based on Oxygen A Band and CO2 1.6 µm Band
Cloud Phase Recognition Based on Oxygen A Band and CO2 1.6 µm Band Open
The accurate recognition of the cloud phase has a great influence on the retrieval of the cloud top height. In order to improve the accuracy of obtaining the cloud top height with OCO-2, we proposed a cloud phase recognition algorithm base…
View article: On the relationship between wind observation accuracy and theascending node of sun-synchronous orbit for the Aeolus-typespaceborne Doppler wind lidar
On the relationship between wind observation accuracy and theascending node of sun-synchronous orbit for the Aeolus-typespaceborne Doppler wind lidar Open
The launch and operation of first spaceborne Doppler wind lidar (DWL) Aeolus is of great significance in observing global wind field. Aeolus operates on the sun-synchronous dawn-dusk orbit to minimize the negative impact of solar backgroun…
View article: Impact of solar background radiation on the accuracy of wind observations of spaceborne Doppler wind lidars based on their orbits and optical parameters
Impact of solar background radiation on the accuracy of wind observations of spaceborne Doppler wind lidars based on their orbits and optical parameters Open
Due to the quantum properties of light, solar background radiation (SBR) is the main source of noise in daytime wind observations of spaceborne Doppler wind lidars (DWLs). In previous works, the impact of SBR on the observation accuracy of…
View article: Texture Feature Extraction Method for Ground Nephogram Based on Contourlet and the Power Spectrum Analysis Algorithm
Texture Feature Extraction Method for Ground Nephogram Based on Contourlet and the Power Spectrum Analysis Algorithm Open
It is important to extract texture feature from the ground-base cloud image for cloud type automatic detection. In this paper, a new method is presented to capture the contour edge, texture and geometric structure of cloud im... | Find, re…
View article: Cirrus Cloud Optical Thickness and Effective Diameter Retrieved by MODIS: Impacts of Single Habit Assumption, 3‐D Radiative Effects, and Cloud Inhomogeneity
Cirrus Cloud Optical Thickness and Effective Diameter Retrieved by MODIS: Impacts of Single Habit Assumption, 3‐D Radiative Effects, and Cloud Inhomogeneity Open
For inhomogeneous cirrus clouds, cloud optical thickness (COT) and effective diameter (De) provided by the Moderate Resolution Imaging Spectrometer (MODIS) Collection 6 cloud products are associated with errors due to the single habit assu…
View article: Cloud Base Height Estimation from ISCCP Cloud-Type Classification Applied to A-Train Data
Cloud Base Height Estimation from ISCCP Cloud-Type Classification Applied to A-Train Data Open
Cloud base height (CBH) is an important cloud macro parameter that plays a key role in global radiation balance and aviation flight. Building on a previous algorithm, CBH is estimated by combining measurements from CloudSat/CALIPSO and MOD…
View article: Statistical Characteristics of Aerosol Extinction Coefficient Profile in East Asia from CALIPSO
Statistical Characteristics of Aerosol Extinction Coefficient Profile in East Asia from CALIPSO Open
\nAerosol extinction coefficient profile (ECP) is important in radiative transfer modeling, however, knowledge of ECP in some area has not been clearly recognized. To get a full understanding of statistical characteristics of ECP in three …
View article: Comparison of Cloud Base Height Derived from a Ground-Based Infrared Cloud Measurement and Two Ceilometers
Comparison of Cloud Base Height Derived from a Ground-Based Infrared Cloud Measurement and Two Ceilometers Open
The cloud base height (CBH) derived from the whole-sky infrared cloud-measuring system (WSIRCMS) and two ceilometers (Vaisala CL31 and CL51) from November 1, 2011, to June 12, 2012, at the Chinese Meteorological Administration (CMA) Beijin…