Nanjing University of Information Science and Technology

About: Nanjing University of Information Science and Technology is a education organization based out in Nanjing, China. It is known for research contribution in the topics: Precipitation & Aerosol. The organization has 14129 authors who have published 17985 publications receiving 267578 citations. The organization is also known as: Nan Xin Da.

Comparison of deterministic and data-driven models for solar radiation estimation in China

Abstract: Solar radiation is an indispensable input for many applications, contributing to different fields, including energy, meteorology, ecology, agriculture and industry. A lot of parameterization schemes have been developed for estimating solar radiation in sites around the world. This paper presented a comparative study on the performances of four shortwave solar radiation (SSR) models in different climates, including Yang’s hybrid model (YHM), an efficient physically based model (EPP), an hourly solar radiation model (HSRM) and a neural network model (ANNM). Daily meteorological variables observed at 837 stations in China were used as model inputs for YHM and ANNM. MODIS atmospheric and land products (MOD08_D3, MYD08_D3, MOD08_M3, MYD08M3, MOD09CMG, and MYD09CMG) were used to derive the required parameters for EPP and HSRM. Cloud fraction and solar zenith angle were found to be the major parameters influencing the model accuracies. The results indicated that YHM performed superior to EPP, ANNM and HSRM with daily mean RMSE of 2.414, 2.535, 2.855 and 3.645 MJm−2day−1, respectively. The monthly mean RMSE for all models were generally higher in July (3.37 MJm−2day−1) and lower in January (1.997 MJm−2day−1). It was observed that the monthly mean RMSE was 2.95 MJm−2 day−1 in humid areas, while it is 2.773 MJm−2day−1 in semi-arid areas. Monthly and annual mean SSR (ASSR) during 2002–2015 were calculated to reveal the spatial and temporal variations of SSR across China using daily meteorological data, MOD08_M3 and MOD08_M3 products based on YHM and EPP models. The result showed that there was not obvious variation trends for ASSR in China, the largest value (14.521 MJm−2day−1) was observed in 2003, while the smallest ASSR (14.182 MJm−2day−1) was in 2014; the ASSR values were generally higher in Qinghai-Tibet and lower in northeastern China.

A review of the theoretical research and practical progress of carbon neutrality

Abstract: Climate change has become a major global challenge. At present, few studies have reviewed the application practices and theoretical research of carbon neutrality. This paper summarizes the practical progress of carbon neutrality, the realization path of carbon neutrality, and the carbon neutrality research in typical fields, and concludes that the previous research has made some progress in the carbon neutrality goal domestic and overseas, the pathways to carbon neutrality, and the carbon neutrality issues in various fields. However, this paper also points out existing problems. Firstly, more studies should be carried out on the quantitative evaluation of carbon neutrality by adopting empircal datas and tools in various fields; Secondly, the correlation between paths and industries should be taken more attention; Additionally, how to measure carbon neutral capability, d potential and costis of great significance in subsequent studies.

Divergences of Two Coupled Human and Natural Systems on the Mongolian Plateau

Abstract: Central to the concept of coupled human and natural systems (CHANS), humans and nature are organized into interacting subsystems of a cohesive whole at multiple spatial and temporal scales. Following an overview of the challenges in implementing the CHANS concept, we used widely available measures of social, economic, and ecological systems, including gross domestic product, population size, net primary productivity, and livestock and their ratios to examine CHANS dynamics on the Mongolian Plateau from 1981 to 2010. Our cross-border analysis of coupled dynamics over the past three decades demonstrated striking contrasts between Inner Mongolia (IM) and Mongolia (MG), with policies playing shifting roles in these measures. For prioritizing future research on the CHANS concept, we hypothesize that although the divergence of IM and MG for 1981–2010 was largely driven by market reforms, the importance of socioeconomic forces driving climate changes will gradually decrease in IM while remaining important in MG.

Airborne particulate matter pollution in urban China: a chemical mixture perspective from sources to impacts

Abstract: Rapid urban and industrial development has resulted in severe air-pollution problems in developing countries such as China, especially in highly industrialized and populous urban clusters. Dissecting the complex mixtures of airborne particulate matter (PM) has been a key scientific focus in the last two decades, leading to significant advances in understanding physicochemical compositions for comprehensive source apportionment. However, identifying causative components with an attributable link to population-based health outcomes remains a huge challenge. The microbiome, an integral dimension of the PM mixture, is an unexplored frontier in terms of identities and functions in atmospheric processes and human health. In this review, we identify the major gaps in addressing these issues, and recommend a holistic framework for evaluating the sources, processes and impacts of atmospheric PM pollution. Such an approach and the knowledge generated will facilitate the formulation of regulatory measures to control PM pollution in China and elsewhere.