Full
Outline
The mid− and high−latitude ionosphere over the Asian sector has long suffered from a large observational gap, which has hindered research on the evolution of ionospheric disturbances and cross−latitude energy transport. Under the second phase of the Meridian Project, the National Space Science Center, Chinese Academy of Sciences, independently developed the Chinese Auroral Radar Network (CN−DARN). It consists of six high−frequency coherent scatter radars deployed at three stations: Longjing, Siziwang, and Hejing. CN−DARN is the first network to achieve large−scale continuous monitoring of the mid− and high−latitude ionosphere over the Eurasian sector from 40°N to 80°N, spanning more than nine time zones. In 2025, after passing national acceptance, it officially joined the international SuperDARN organization. This paper systematically reviews the network architecture, observation capabilities, data sharing system, and representative scientific results of CN−DARN. CN−DARN has accumulated continuous, stable, and high−quality long−term observations and established the SuperDARN China data mirror site for global open access. Based on CN−DARN data, original results have been obtained in the spatiotemporal evolution of dawnside subauroral polarization streams (SAPS), global differences between dawnside and duskside SAPS, improved inversion of ionospheric convection during magnetic storms, and the propagation and E−F layer coupling of traveling ionospheric disturbances (TIDs). CN−DARN effectively fills the observational gap in the Asian mid− and high−latitude ionosphere and provides key observational support for space weather monitoring, disturbance tracing, and early warning. In the future, it will contribute to the International Meridian Circle Program and promote routine, systematic, and refined global ionospheric observations.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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