Online First

Online First have been peer-reviewed and accepted, which are not yet assigned to volumes/issues, but are citable by Digital Object Identifier (DOI).
Display Method:
Progress of Radiation Belt Exploration by a Constellation of Small Satellites TGCSS/SGRB, COSPAR
WU Ji, YANG Xiaochao, DAI Lei
, Available online  , doi: 10.11728/cjss2022.04.yg18
A COnstellation of Radiation BElt Survey (CORBES) program is proposed by the Sub-Group on Radiation Belt (SGRB) of TGCSS, COSPAR. The CORBES mission is expected to have a constellation of 10-plus small/CubeSats to take an ultra-fast survey of the Earth’s radiation belt. The general science goal for CORBES is to investigate two groups of physical processes related to the radiation belts: wave-particle interactions and radial transport. This mission is an international multilateral cooperation mission, an open and sharing data policy will be implemented. The data set of observations will be shared within the contributors of the constellation and the broad research community at large, then would be of great use for comprehensively understanding the dynamics of magnetospheric energetic populations and developing more standard models of the Earth’s radiation belts. Furthermore, from the application perspective, the ultra-fast survey of the radiation belt could serve as an important facility for monitoring space weather of the Earth as well.
Progress of Fengyun Meteorological Satellites Since 2020*
ZHANG Peng, XU Zhe, GUAN Min, XIE Lizi, XIAN Di, LIU Chang
, Available online  , doi: 10.11728/cjss2022.04.yg14
China’s efforts to develop Fengyun meteorological satellites have made major strides over the past 50 years, with the polar and geostationary meteorological satellite series achieving continuously stable operation to persistently provide data and product services globally. By the end of 2021, 19 Chinese self-developed Fengyun meteorological satellites have been launched successfully. Seven of them are in operation at present, the data and products are widely applied to weather analysis, numerical weather forecasting and climate prediction, as well as environment and disaster monitoring. Since the last COSPAR report, FY-4B, the first new-generation operational geostationary satellite, and FY-3E, the first early-morning orbit satellite in China’s polar-orbiting meteorological satellite family have been launched in 2021. The characteristics of the two latest satellites and the instruments onboard are addressed in this report. The status of current Fengyun Satellites, product and data service and international cooperation and supporting activities has been introduced as well.
Space Environment Measurements and Applications on the Tianhe Core Module of China Space Station
LIU Siqing, SUN Yueqiang, ZHONG Qiuzhen, WEI Fei, LI Yongping, ZHANG Xianguo, LIN Ruilin, LI Zhitao, REN Tingling, LUO bingxian, CHANG Zhen, WANG Chunqin, PENG Songwu, AI Jiangzhao
, Available online  , doi: 10.11728/cjss2022.04.yg16
Tianhe Core Module of China Space Station (CSS) equips a set of instruments consisting of a Particle Fluxes and Solar Activity Detector (PFSAD) and two Atmospheric Density Multi-directional Detectors (ADMDs). The PFSAD is to measure X-rays from the Sun and energetic particles in the low-latitude regions, including electrons, protons, and helium ions. The ADMDs are to measure thermospheric atmospheric density. The instruments provide real-time data of the orbital space environment, including solar flares, energetic particle variation, and thermospheric atmospheric density enhancement. All the data contribute to the CSS space weather service for mission control and astronaut safety. The paper gives a preliminary analysis of the space environment measurements from PFSAD and ADMDs. By further analysis, the 1024-channel fine spectra of the solar X-ray can be used to study the mechanism of solar flares and their impacts on the Earth’s atmosphere. Data accumulation will be helpful for analyzing mid-term and long-term variations of the SAA and atmosphere density. Furthermore, the data is useful to calibrate previous empirical models and establish new models to study the space environment.
Construction Progress of Chinese Meridian Project Phase II
WANG Chi, XU Jiyao, LU Daren, YUE Xinan, XUE Xianghui, CHEN Gang, YAN Jingye, YAN Yihua, LAN Ailan, WANG Jiangyan, WANG Xin, TIAN Yufang
, Available online  , doi: 10.11728/cjss2022.04.yg09
The Chinese Meridian Project (CMP) is the Space Environment Ground Based Comprehensive Monitoring Network of China, a national major science and technology infrastructure project. The CMP consists of the Space Environment Monitoring System, Data Communication System, and Science Application System. Its construction has been divided into two steps: the Phase I was from 2008 to 2012; the Phase II started at the end of 2019, expected to be completed at the end of 2023. Beyond 2023, the CMP as a whole will be in operation to make observations. This report introduces the construction progress of CMP Phase II in the past two years, covering the construction progress of both the Data Communication System and the Science Application System. As for the Space Environment Monitoring System, this report mainly gives an introduction to the construction progress of large-scale advanced monitoring equipment, such as, the solar radio telescope, interplanetary scintillation telescope, incoherent scatter radar, high frequency radar, MST radar, and large-aperture Helium Lidar. In addition, this paper presents the construction plan for the next two years and the future outlook as well.
China’s Space Science Program (2025-2030): Strategic Priority Program on Space Science (III)*
WANG Chi, SONG Tingting, SHI Peng, LI Ming, FAN Quanlin
, Available online  , doi: 10.11728/cjss2022.04.yg01
The Strategic Priority Program on Space Science (SPP), which is under the leadership of the Chinese Academy of Sciences (CAS), has established China’s space science satellite series from scratch. A number of major scientific achievements have been made by the first phase of the Program (SPP I), while SPP II has been currently being implemented. The future development of space science needs urgent top-level planning and advanced layout to clarify the overall goal and investment portfolio from 2025 to 2030. We will briefly introduce the initiative and possible space science missions of SPP III, including the preparatory work which already started in July 2021. Following the effective administrative tradition since SPP I, National Space Science Center (NSSC, CAS) is responsible for the whole procedure, including soliciting, assessment, and implementation of SPP III. Brief information on the 13 candidate missions will be described, including missions in the fields of astronomy and astrophysics, exoplanets, heliophysics and planetary and Earth science, respectively.
Space Astronomy
ZHANG Shuangnan, YI Shuxu
, Available online  , doi: 10.11728/cjss2022.04.yg02
This chapter reports the recent progress on the space astronomy missions of China, including the following missions: currently operating in orbit, e.g., DAMPE, Insight-HXMT, GECAM, PolarLight, GRID and Lobster-eye X-ray Satellite; approved and under development for launch in the next a couple of years, e.g., SVOM and EP; planned experiments to be onboard China’s Space Station in the next several years, e.g., CSST, HERD, POLAR-2, DIXE and LyRIC; candidate missions that have passed the first round of review of Strategy Priority Program on space science (III) of the Chinese Academy of Sciences, e.g., eXTP, DAMPE-2, Earth2.0, DSL and CHES.
Recent Status of Taiji Program in China*
LUO Ziren, ZHANG Min, WU Yueliang
, Available online  , doi: 10.11728/cjss2022.04.yg03
The Taiji-1 satellite is a pilot satellite mission of Taiji program, which is used to verify Taiji’s key technology and also to testify the feasibility of Taiji roadmap. Taiji-1 was launched on 31 August 2019 and its designed mission was successfully completed. The in-orbit scientific achievements of Taiji-1 satellite in the first stage have been published and now it has entered the extended task phase. Taiji-2 will prepare all the technology needed by Taiji-3, and remove all the technical obstacles faced by Taiji-3.
Introduction to the Chinese Hα Solar Explorer (CHASE) Mission
FANG Cheng, LI Chuan
, Available online  , doi: 10.11728/cjss2022.04.yg05
The Chinese Hα Solar Explorer (CHASE) mission, dubbed as “Xihe”-Goddess of the Sun, was launched on 14 October 2021 as the first solar space mission of China National Space Administration (CNSA). The CHASE mission aims to test an ultra-high precision and stability platform, and to acquire solar Hα Spectroscopic observations with high temporal and spectral resolutions. Since its launch, the in-orbit performance of the scientific payload-Hα Imaging Spectrograph (HIS) has been excellent. The first set of data has been calibrated and analyzed recently. The CHASE science data are expected to advance our understanding of the plasma dynamics in the solar lower atmosphere, and to investigate the Sun as a star for stellar physics.
Space Life Science in China
MA Hong, ZHANG Chen, LI Yujuan, LÜ Xuefei, LI Xiaoqiong, ZHANG Ying, YANG Chunhua, LIU Huayan, FAN Yunlong, DENG Yulin
, Available online  , doi: 10.11728/cjss2022.04.yg17
With the further advancement of China’s major manned spaceflight project, the national space laboratory was successfully built. China has also made considerable progress and breakthroughs in the field of space life sciences. This paper reviews the related biological effects under space flight conditions, mainly including epigenetic effects, skeleton remodeling and peripheral body fluid circulation effects, as well as the research and application of space life science related biotechnology in the field of microbial culture and biological regeneration life support system.
Space Solar Physics in China: 2020-2022
GAN Weiqun, FAN Quanlin
, Available online  
To follow up the last report two years ago, what happened from 2020 to 2022 deserves specially mentioning: CHASE was successfully launched on 14 October 2021; ASO-S will finish soon its Phase-D study and is scheduled for launch in October 2022; four solar mission candidates are being undertaken the engineering project evaluations; three solar mission proposals are being undertaken the background project evaluations; there are also quite a number of pre-study space solar physics projects getting either newly supported or finished. This paper describes in brief the status of all these related projects.
Recent Advance in the Solar Wind Magnetosphere Ionosphere Link Explorer (SMILE) Mission
, Available online  , doi: 10.11728/cjss2022.04.yg08
The SMILE (Solar wind Magnetosphere Ionosphere Link Explorer) mission is a joint space science mission between the European Space Agency (ESA) and the Chinese Academy of Sciences (CAS), aiming to understand the interaction of the solar wind with the Earth’s magnetosphere in a global manner. The mission was adopted by CAS in November 2016 and by ESA in March 2019 with a target launch date in the year 2024-2025. We report the recent progress of SMILE mission by April, 2022.
Magnetospheric Physics in China: 2020-2021
CAO Jinbin, YANG Junying
, Available online  , doi: 10.11728/cjss2022.04.yg12
In the past two years, many progresses were made in magnetospheric physics by using the data of OMNI, SuperMAG networks, Double Star Program, Cluster, THEMIS, RBSP, DMSP, DEMETER, NOAA, Van Allen Probes, GOES, Geotail, Swarm, MMS, BeiDa, Fengyun, ARTEMIS, MESSENGER, Juno, Chinese Mars ROVER, MAVEN, Tianwen-1, Venus Express, Lunar Prospector e.g., or by computer simulations. This paper briefly reviews these works based on 356 papers published from January 2020 to December 2021. The subjects covered various sub-branches of Magnetospheric Physics, including solar wind-magnetosphere-ionosphere interaction, inner magnetosphere, outer magnetosphere, magnetic reconnection, planetary magnetosphere.
Progress Report on ASO-S
GAN Weiqun
, Available online  , doi: 10.11728/cjss2022.04.yg07
The Advanced Space-based Solar Observatory (ASO-S) started officially its engineering phases at the beginning of 2018. In the past two years from 2020 to 2022 ASO-S completed smoothly the Phase-C study and is now undertaking the Phase-D study. The launch date is finally set in October of 2022. We here briefly summarize the progress of ASO-S from the late Phase-C to the current Phase-D studies, and plan the scientific affairs around the launch.
Research Advances of the Chinese Meridian Project in 2020-2021
WANG Chi, WANG Jiangyan, XU Jiyao
, Available online  , doi: 10.11728/cjss2022.04.yg04
The Chinese Meridian Project (CMP) is a major national science and technology infrastructure invested and constructed by the Chinese government. The project builds space environment observation stations, focusing on the monitoring of the space environment over China, so as to provide a monitoring basis for clarifying the regional characteristics of the space environment over China and its relationship with global change, and making important innovative scientific achievements. The first phase of the CMP passed the national acceptance in 2012. It has been running for nearly ten years and has accumulated more than 8TB monitoring data. These data are all available to all data users through the data center of the project. From 2020 to 2021, users of CMP data have completed a series of original works, which have solved current scientific problems in the field of space physics research. On the other hand, they also make us look forward to the completion of the second phase of CMP and its application benefits in national major strategic needs and cutting-edge scientific research.