2019-09-25
The deteriorating environmental system and increasing number of time-varying datasets have generated a significant demand for new techniques to support online high-efficiency climate analysis.To realize online high-efficiency visualization and analysis, we adopt a pre-processing method for raw data to build a lossless tile set based on the image pyramid structure for each image according...
SQL: Superpixels via quaternary labeling by Dengfeng Chai
2019-09-11
Superpixels have become an effective alternative to pixels since superpixels have two prime advantages over pixels. One is their perceptual meaning, the other is the complexity. Although many superpixel segmentation methods are available, few produce superpixels that conform to a regular lattice, which is a prerequisite for some models such as Markov Random Field (MRF) and Convolutional Neural Net...
Size-Related Physical Properties of Black Carbon in the Lower Atmosphere over Beijing and Europe
2019-09-02
The study Size-Related Physical Properties of Black Carbon in the Lower Atmosphere over Beijing and Europe by Dantong Liu’s group was recently published in the journal Environmental Science & Technology (NI, IF=7.1) and it was selected as a cover art of the issue.Figure 1. The cover art of EST for the articleBlack carbon (BC), the component of carbonaceous aerosols from in...
2019-08-30
Data missing is a common problem in data-driven earth science research. Take the buoy system as an example. Buoy systems have been deployed to monitor coastal waters, and these systems generate massive amounts of data with high temporal resolution. In practice, however, many of these records are often lost, which adversely impacts further data analysis.In this paper, we propose an efficient model ...
2019-08-20
Impact of anthropogenic organic matter on the distribution patterns of sedimentmicrobial community from the Yangtze River, ChinaKai Zhang 1,3, Ding He 1, 2, *, Xingqian Cui 4, Daidu Fan 5, Shangbin Xiao 6, Yongge Sun11Institute of Environmental and Biogeochemistry (eBig), School of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China2 State Key Laboratory of Satellite Ocean Enviro...
2019-07-19
The new study of Prof. LI Weijun group has been published online by Environmental Scicence & Technology (IF=7.1)：Mixing State and Fractal Dimension of Soot Particles at a Remote Site in the Southeastern Tibetan Plateau. Figure 1. A conceptual model artBlack carbon (soot) is a typical light-absorbing aerosol component of fine particles from biomass or fuel burning and might be t...
2019-01-04
AbstractHow the rainfall characteristics of landfalling tropical cyclones (TCs) over China change with the dry-air intrusion is explored through analyzing Tropical Rainfall Measuring Mission (TRMM) and environmental fields. It is found that the rainfall area of landfalling TC is positively correlated to the midlevel environmental relative humidity: the larger the surrounding relative humidity befo...
Study on fine primary particles from residential coal burning in JGR-A as cover paper
2018-12-17
The new study of Prof. LI Weijun group has been published online by Journal of Geophysical Research：Atmospheres recently, which mainly focused on the morphology, composition and hygroscopicity of fine primary particles from residential coal burning. Due to its high quality, this study was selected as the cover paper of JGR.Figure 1 The study by Zhang et al. was selected as the cover paper of JGR....
Climate Response to Different Radiation Management Climate Engineering Schemes
2018-11-18
To counteract the CO2-induced global warming effect, a number of geoengineering methods have been proposed. One proposed method (sulfate aerosol injection) is to inject sulfate aerosols or its precursors (SO2) into the stratosphere to deflect more sunlight back to space. Another method (marine cloud brightening) is to seed low-level marine stratocumulus clouds to reflect more sunlight. A third met...
Multistep-ahead Forecasting of Chlorophyll a Using a Wavelet Nonlinear Autoregressive Network
2018-10-23
Multistep-ahead forecasting is essential to many practical problems, such as weather forecast, the early warning of disasters. However, existing studies mainly focus on current-time or one-step-ahead prediction since forecasting multiple steps continuously presents difficulties, such as accumulated errors and long-term time series modeling. This study proposed an effective multistep-ahead forecast...
2018-10-16
Space-time prediction for areas with no observing stations has witnessed significant progress in geology and geographic information science. Spatiotemporal regression kriging (STRK) is a fundamental space-time prediction method in geo-statistics and widely used in various fields. To handle the spatiotemporal non-stationary relationship in the trend component of STRK, we recently extended conventio...
Nonsphericity and Inhomogenity in Optical Modeling of Sea Salt Aerosols
2018-09-27
Sea salt is one of the largest natural aerosol sources in the atmosphere, and it plays an important role in both atmospheric chemical processing and radiative transfer, particularly in the atmosphere over oceans and coastal regions. The research effort presented in Bi et al. (1018) addresses a critical issue associated with the nonsphericity and inhomogenity in optical modeling of sea salt aerosol...
2018-09-25
The organic matter (OM) cycling between rivers and coastal ocean is poorly constrained due to difficulties in assessing composition of different OM sources. Sedimentary fecal sterols and multiple hydrocarbon biomarkers, combined with bulk total organic carbon (TOC), stable carbon isotopes, and multiple statistical analyses were applied to elucidate both natural and anthropogenic inputs and for the...
Lateral Mantle H2O Variation Controls Orogen Width
2018-09-18
How the lithosphere deforms to accommodate convergence at continent-continent plate boundaries remains a long-standing geodynamic question. The South Island of New Zealand straddles the boundary between the Pacific and Australian continental plates and has long been considered a premier locality to study this issue.The research paper (Li et al., 2018) directly addresses the role of the lateral H2O...
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