Chinese satellites provide advanced solutions to modeling small particles

November 13, 2018

The assimilation of aerosol optical depth (AOD) observational data from the Chinese satellite Fengyun-3A (FY-3A) can significantly improve the ability to model aerosol mass, according to Prof. Jinzhong MIN, Vice President at Nanjing University of Information Science and Technology.

Prof. MIN and his team--a group of researchers from the Key Laboratory of Meteorological Disaster of the Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters of Nanjing University of Information Science and Technology--have had their findings published in Advances of Atmospheric Sciences.

"Atmospheric aerosols have significant impacts on the climate and environment. In particular, increasingly severe particulate matter pollution events are threatening public health and ecosystems," says Prof. MIN.

"AOD can be used to test the calibration of satellite retrieval data, and is a key factor in determining the climatic effects of aerosol. However, there is a lack of data from ground-based observations of aerosols in East Asia," he explains. "Thus, it is important to improve the accuracy of atmospheric chemical model predictions by combining satellite observations."

The FY-3A meteorological satellite--a Chinese second-generation polar-orbiting meteorological satellite--has been widely used in meteorology, environmental protection, and other national sectors. It has ultraviolet, visible, infrared, and microwave multispectral instruments, and it has accumulated aerosol optical thickness inversion data since 2008.

In order to study and improve our ability to model and predict aerosol mass, the team adopted the method of three-dimensional variational data assimilation in the Gridpoint Statistical Interpolation analysis system to develop AOD data assimilation systems. Experiments were conducted for a dust storm over East Asia in April 2011. By using the National Meteorology Center's method to simulate the background error covariance of various aerosol variables, the vertical characteristics of each aerosol variable were reflected well.

"The assimilation of satellite AOD observational data can significantly improve our ability to model and predict aerosol mass. The AOD distribution of the analysis field was closer to the observations of the satellite after the assimilation of satellite AOD data. These results suggest that FY-3A satellite aerosol products can be effectively applied in numerical models and dust weather analysis," states Prof. MIN.

"Future work may be needed to assimilate and analyze multispectral, multi-sensor aerosol-related data," he adds.
-end-


Institute of Atmospheric Physics, Chinese Academy of Sciences

Related Climate Articles from Brightsurf:

Are climate scientists being too cautious when linking extreme weather to climate change?
Climate science has focused on avoiding false alarms when linking extreme events to climate change.

Climate Insights 2020: Climate opinions unchanged by pandemic, but increasingly entrenched
A new survey provides a snapshot of American opinion on climate change as the nation's public health, economy, and social identity are put to the test.

Climate action goes digital
More transparent and accessible to everyone: information and communication technologies bring opportunities for transforming traditional climate diplomacy.

Sub-national 'climate clubs' could offer key to combating climate change
'Climate clubs' offering membership for sub-national states, in addition to just countries, could speed up progress towards a globally harmonized climate change policy, which in turn offers a way to achieve stronger climate policies in all countries.

Review of Chinese atmospheric science research over the past 70 years: Climate and climate change
Over the past 70 years since the foundation of the People's Republic of China, Chinese scientists have made great contributions to various fields in the research of atmospheric sciences, which attracted worldwide attention.

How aerosols affect our climate
Greenhouse gases may get more attention, but aerosols -- from car exhaust to volcanic eruptions -- also have a major impact on the Earth's climate.

Believing in climate change doesn't mean you are preparing for climate change, study finds
Notre Dame researchers found that although coastal homeowners may perceive a worsening of climate change-related hazards, these attitudes are largely unrelated to a homeowner's expectations of actual home damage.

How trees could save the climate
Around 0.9 billion hectares of land worldwide would be suitable for reforestation, which could ultimately capture two thirds of human-made carbon emissions.

Climate undermined by lobbying
For all the evidence that the benefits of reducing greenhouse gases outweigh the costs of regulation, disturbingly few domestic climate change policies have been enacted around the world so far.

Climate education for kids increases climate concerns for parents
A new study from North Carolina State University finds that educating children about climate change increases their parents' concerns about climate change.

Read More: Climate News and Climate Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.