NIGHTTIME

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Land-air coupling exacerbates the future risk of concurrent daytime-nighttime hot extremes
《Science China Earth Sciences》2025年第4期1261-1273,共13页Kaiwen ZHANG Yingxu ZHAN Zhiyan ZUO Lulei BU Meiyu CHANG Liang QIAO 
supported by the National Natural Science Foundation of China(Grant Nos.42288101,42175053);the National Key Research and Development Program of China(Grant No.2022YFF0801703);the Science and Technology Commission of Shanghai Municipality(Grant No.24YF2738900);the Undergraduate Research Grant Program of Fudan University(Grant No.22033)。
Compound heatwaves with both daytime and nighttime hot extremes(hereafter compound heatwaves)have been occurring frequently worldwide,threatening human health and ecosystems.Land-air coupling(LAC)has been identified a...
关键词：Concurrent daytime-nighttime hot extremes Compound heatwaves Land-air coupling Anthropogenic emissions CMIP6 
Changing structures of summertime heatwaves over China during 1961–2017被引量：4
《Science China Earth Sciences》2021年第8期1242-1253,共12页Ning AN Zhiyan ZUO 
supported by the National Key R&D Program(Grant No.2016YFA0601502);the National Natural Science Foundation of China(Grant Nos.41822503 and 41375092).
Despite the prevalence of artificial separation of daytime and nighttime hot extremes, they may actually co-occur or occur sequentially. Considering their potential lead-lag configuration, this study identified an ent...
关键词：Heatwaves Daytime-nighttime coupling URBANIZATION Meteorological conditions 
Nighttime anomaly of ionospheric electron density被引量：1
《Science China Earth Sciences》2016年第7期1517-1518,共2页XU JiYao LIU Xiao 
The ionosphere is composed of a large number of electrons and ions, which are produced by the photoionization effect of the solar radiation on the neutral atmosphere. The altitude range of ionosphere is about 60–1000...
关键词：anomaly altitude neutral multiply latitude winter seasonal diurnal magnitude hemisphere 
Nighttime electron density enhancements at middle and low latitudes in East Asia被引量：2
《Science China Earth Sciences》2015年第4期551-561,共11页ZHANG YanYan LIU LiBo CHEN YiDing LIU Jing YU You LI Ming 
supported by the projects of Chinese Academy of Sciences(Grant No.KZZD-EW-01-3);the National Basic Research Program of China(Grant No.2012CB825604);the National Natural Science Foundation of China(Grant Nos.41231065,41174137,41321003)
Nighttime enhancements in ionospheric electron density at mid- and low-latitudes are investigated by using the critical frequency of the F2-1ayer （foF2） data measured from ionosonde stations at Okinawa （26.3°N, 12...
关键词：nighttime electron density enhancements critical frequency of the F2-1ayer seasonal and solar activity dependencies vertical equivalent winds 
Study on the processing method of nighttime CO_2 eddy covariance flux data in ChinaFLUX被引量：29
《Science China Earth Sciences》2006年第S2期36-46,共11页ZHU Zhilin, SUN Xiaomin, WEN Xuefa, ZHOU Yanlian, TIAN Jing & YUAN Guofu Key Laboratory of Ecosystem Network Observation and Model, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Graduate University of the Chinese Academy of Sciences, Beijing 100049, China 
The authors thank the Yucheng sta-tion and the Changbai Mountains station for providing ob-servation data. This work was supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KZCX1-SW-01-01A); the National Basic Research Program of China (Grant No. G2002CB412501).
At present, using Eddy Covariance (EC) method to estimate the "true value" of carbon sequestration in terrestrial ecosystem arrests more attention. However, one issue is how to solve the uncertainty of observations (e...
关键词：EDDY COVARIANCE NIGHTTIME CO2 FLUX data correction ChinaFLUX. 
UU_* filtering of nighttime net ecosystem CO_2 exchange flux over forest canopy under strong wind in wintertime被引量：1
《Science China Earth Sciences》2005年第z1期85-92,共8页ZHANG Junhui, HAN Shijie, SUN Xiaomin & TANG Fengde Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Department of Environment and Life Sciences, Liaoning University, Shenyang 110036, China 
The mechanism of the negative nighttime net CO2 flux in wintertime and reasonable treatment with it is of great importance in evaluating the carbon metabolism of boreal forest. Results, based on the data obtained with...
关键词：night in wintertime negative NEE EDDY-COVARIANCE pressure fluctuation UU. filtering 
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