/   Home   /   Newsroom   /   Multimedia News

Atmospheric Profiling Synthetic Observation System: Probing the Whole Atmosphere

Sep 11, 2017     Email"> PrintText Size

For decades, satellites have been monitoring the atmosphere for supporting the research on global climate, weather, and environment. However, there still existing strong demands for continuous observations of the whole atmosphere with high vertical and temporal resolutions.

An NSFC (National natural Science Foundation of China) funded ground-based research facility – “Atmospheric Profiling Synthetic Observation System” (APSOS), aiming to deepen our understanding on the interactions within the whole (neutral) atmosphere layers, have been implemented at CAS Institute of Atmospheric Physics' Huainan station in Anhui Province of China on Sept 9, 2017. This is the first ground-based facility for profiling atmospheric variables and multiple constituents in the whole (neutral) atmosphere.

In late 2017, the APSOS will be relocated to Yangbajing International Cosmic Ray Observatory (4300 m A.S.L.) for long-term observations over the Tibetan Plateau in China.


APSOS has been designed to operate at multiple wavelengths, ranging from ultraviolet to infrared, and from terahertz to millimeter. It consists of several state-of-the-art instruments, for measuring range-resolved parameters of the whole (neutral) atmosphere, from surface up to 110 km, covering the altitude of troposphere, stratosphere, mesosphere, and the lower thermosphere. (Image by CHENG Xuewu) 


The measurements can achieve vertical resolution on the order of tens meters, and temporal resolution on the order of minutes. (Image by CHENG Xuewu) 

The key instruments of APSOS are five lidars (i.e. laser radars), a cloud radar, a terahertz radiometer, and a telescope assembly of four Φ1200 mm mirrors. It can provide range-resolved profiles of temperature, wind, water vapor, aerosol, cloud, ozone, NO2, SO2, and CO2. In addition, a Data Management & Validation Platform is also implemented for data retrieval and comparison with other instruments, including radiosonde, ozonesonde, stratospheric balloon, and satellite measurements.

The APSOS has been developed by the Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS), in collaboration with the Wuhan Institute of Physics & Mathematics / CAS, the University of Science and Technology of China, the Anhui Institute of Optics & Fine Mechanics/CAS, the Purple Mountain Observatory/CAS, Wuhan University, and Anhui Sun Create Electronics.


(Editor: CHEN Na)



Related Articles

atmosphere;ocean;predictability;target observation

Optimal Observation Locations for Improving High-impact Air-sea Enviromental Events Forecastings

Aug 06, 2015

Mu Mu (Chinese Academy of Sciences) and coauthors reviewed recent progress in determining the optimal locations for ENSO, IOD, TCs and KLM and discussed their potential role in optimizing observation networks and thus improving forecast skill. In particular, they suggeste...

atmosphere; climate dynamics; earth system modeling

IAP Scientists Explain Warmer Climate in the Tang and Song Dynasties

Mar 04, 2015

Chinese are generally proud of Tang dynasty (618-907 AD) which was considered a golden age of cosmopolitan culture while Song dynasty (960-1279 AD) was considered relatively weaker with respect to so-called "national capability" in Chinese history. The demographic, econom...

Contact Us

Copyright © 2002 - Chinese Academy of Sciences