The Driving Factors of Global Land Surface Albedo: An Analysis with the Glass and Merra-2 Data

Li, Xijia; Qu, Ying; Lv, Mingzhu; Song, Yan; Zhao, Xingshan

doi:10.1109/igarss47720.2021.9554278

Cited by 3 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of LSA is largely determined by the geophysical parameters of land surfaces (e.g., land cover types, vegetation greenness, vegetation structure, soil surface roughness, soil moisture, fraction of snow cover, snow grain size, soot concentrations of snow, and snow depth). For most circumstances, the properties of snow, vegetation, and soil are the most important driving factors of LSA, and the importance of these driving factors varies with geographical locations [39]. However, the LSA can also be significantly influenced by many indirect factors, such as air temperature, precipitation, human activities, and atmospheric circulation.…”

Section: Discussionmentioning

confidence: 99%

Reponses of Land Surface Albedo to Global Vegetation Greening: An Analysis Using GLASS Data

Xiao

2022

Atmosphere

Self Cite

View full text Add to dashboard Cite

Global vegetation greening during recent decades has been observed from various remote sensing data. The global and regional climate can be altered by an increase in carbon storage, as well as changes in land surface albedo (LSA) and evaporation. However, the LSA changes induced by global vegetation greening are still not clear, and contrasting responses of LSA to vegetation changes were reported in previous studies. In this study, we analyzed the LSA in response to global vegetation greening using the Global Land Surface Satellite (GLASS) data and a vegetation-induced LSA change model. The results showed that vegetation greening trends could be observed worldwide, which resulted in contrasting LSA responses at regional scales (LSA increased as leaf area index (LAI) increased, or LSA decreased as LAI increased). Moreover, these contrasting LSA responses to global vegetation greening were effectively explained by the albedo difference between a vegetation and soil background. The results provide new insights into the relationship between LSA changes and global vegetation dynamics, and can support recommendations for policies of vegetation protection, and large-scale afforestation and deforestation.

show abstract

Section: Discussionmentioning

confidence: 99%

Reponses of Land Surface Albedo to Global Vegetation Greening: An Analysis Using GLASS Data

Xiao

2022

Atmosphere

Self Cite

View full text Add to dashboard Cite

show abstract

Improved cloudy-sky snow albedo estimates using passive microwave and VIIRS data

Jia

Wang

Liang

et al. 2023

ISPRS Journal of Photogrammetry and Remote Sensing

View full text Add to dashboard Cite

Blue-Sky Albedo Reduction and Associated Influencing Factors of Stable Land Cover Types in the Middle-High Latitudes of the Northern Hemisphere during 1982–2015

et al. 2022

View full text Add to dashboard Cite

Land surface albedo (LSA) directly affects the radiation balance and the surface heat budget. LSA is a key variable for local and global climate research. The complexity of LSA variations and the driving factors highlight the importance of continuous spatial and temporal monitoring. Snow, vegetation and soil are the main underlying surface factors affecting LSA dynamics. In this study, we combined Global Land Surface Satellite (GLASS) products and ERA5 reanalysis products to analyze the spatiotemporal variation and drivers of annual mean blue-sky albedo for stable land cover types in the middle-high latitudes of the Northern Hemisphere (30~90°N) from 1982 to 2015. Snow cover (SC) exhibited a decreasing trend in 99.59% of all pixels (23.73% significant), with a rate of −0.0813. Soil moisture (SM) exhibited a decreasing trend in 85.66% of all pixels (22.27% significant), with a rate of −0.0002. The leaf area index (LAI) exhibited a greening trend in 74.38% of all pixels (25.23% significant), with a rate of 0.0014. Blue-sky albedo exhibited a decreasing trend in 98.97% of all pixels (65.12% significant), with a rate of −0.0008 (OLS slope). Approximately 98.16% of all pixels (57.01% significant) exhibited a positive correlation between blue-sky albedo and SC. Approximately 47.78% and 67.38% of all pixels (17.13% and 25.3% significant, respectively) exhibited a negative correlation between blue-sky albedo and SM and LAI, respectively. Approximately 10.31%, 20.81% and 68.88% of the pixel blue-sky albedo reduction was mainly controlled by SC, SM and LAI, respectively. The decrease in blue-sky albedo north of 40°N was mainly caused by the decrease in SC. The decrease in blue-sky albedo south of 40°N was mainly caused by SM reduction and vegetation greening. The decrease in blue-sky albedo in the western Tibetan Plateau was caused by vegetation greening, SM increase and SC reduction. The results have important scientific significance for the study of surface processes and global climate change.

show abstract

The Driving Factors of Global Land Surface Albedo: An Analysis with the Glass and Merra-2 Data

Cited by 3 publications

References 6 publications

Reponses of Land Surface Albedo to Global Vegetation Greening: An Analysis Using GLASS Data

Reponses of Land Surface Albedo to Global Vegetation Greening: An Analysis Using GLASS Data

Improved cloudy-sky snow albedo estimates using passive microwave and VIIRS data

Blue-Sky Albedo Reduction and Associated Influencing Factors of Stable Land Cover Types in the Middle-High Latitudes of the Northern Hemisphere during 1982–2015

Contact Info

Product

Resources

About