中国科学院机构知识库网格系统: 检索

The temporal response of soil respiration to environment differed from that on spatial scale 期刊论文 OAI收割
AGRICULTURAL AND FOREST METEOROLOGY, 2023, 卷号: 342, 页码: 13
作者: Zhao, Wei; Yang, Meng; Yu, Guirui; Chen, Zhi; Wang, Qiufeng

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收藏 | 浏览/下载：15/0 | 提交时间：2023/11/29

Soil respiration Spatial and temporal variability Mean annual temperature Annual precipitation Response differences

Temperature and the maturation of fish: a simple sine-wave model for predicting accelerated spring spawning 期刊论文 OAI收割
ENVIRONMENTAL BIOLOGY OF FISHES, 2022, 页码: 7
作者: Pauly, Daniel; Liang, Cui

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收藏 | 浏览/下载：33/0 | 提交时间：2022/04/12

Spring spawning in fish Shifts in phenology Temperature differences Size at first maturity Triggers for maturation Amplitude of seasonal oscillations

An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文 OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者: HXMT

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收藏 | 浏览/下载：58/0 | 提交时间：2022/02/08

accretion accretion disks black hole physics X-rays: binaries time Astrophysics - High Energy Astrophysical Phenomena Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.

Inter-provincial Differences in Rice Multi-cropping Changes in Main Double-cropping Rice Area in China: Evidence from Provinces and Households 期刊论文 OAI收割
CHINESE GEOGRAPHICAL SCIENCE, 2019, 卷号: 29, 期号: 1, 页码: 127-138
作者: Wang, Renjing; Li, Xiubin; Tan, Minghong; Xin, Liangjie; Wang, Xue

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收藏 | 浏览/下载：22/0 | 提交时间：2019/05/23

multi-cropping change inter-provincial differences cropping system adaption accumulated temperature double-cropping rice area China

Inter-provincial Differences in Rice Multi-cropping Changes in Main Double-cropping Rice Area in China: Evidence from Provinces and Households 期刊论文 OAI收割
CHINESE GEOGRAPHICAL SCIENCE, 2019, 卷号: 29, 期号: 1, 页码: 127-138
作者: Wang, Renjing; Li, Xiubin; Tan, Minghong; Xin, Liangjie; Wang, Xue

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收藏 | 浏览/下载：21/0 | 提交时间：2019/05/23

multi-cropping change inter-provincial differences cropping system adaption accumulated temperature double-cropping rice area China

Time series decomposition of remotely sensed land surface temperature and investigation of trends and seasonal variations in surface urban heat islands SCI/SSCI论文 OAI收割
2016
作者: Quan J. L.; Zhan, W. F.

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收藏 | 浏览/下载：24/0 | 提交时间：2017/11/09

remote sensing land surface temperature urban heat island time series decomposition temporal variation climatology split-window algorithm satellite data energy-balance orbital drift humidity differences rural humidity vapor-pressure annual cycle emissivity climate

Sr/Ca differences within and among three Tridacnidae species from the South China Sea: Implication for paleoclimate reconstruction 期刊论文 OAI收割
CHEMICAL GEOLOGY, 2014, 卷号: 390, 页码: 22-31
作者: Shao, D (Shao, Da)[ 2 ]; Yan, H (Yan, Hong)[ 1,2 ]; Sun, LG (Sun, Liguang)[ 2 ]; Wang, YH (Wang, Yuhong)[ 3,4 ]

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收藏 | 浏览/下载：23/0 | 提交时间：2018/11/30

South China Sea Tridacnidae Sr/ca Ratios Interspecies Differences Within-species Differences Sea Surface Temperature

Daily Evaporative Fraction Parameterization Scheme Driven by Day-Night Differences in Surface Parameters: Improvement and Validation SCI/SSCI论文 OAI收割
2014
Lu J.; Tang R. L.; Tang H. J.; Li Z. L.; Zhou G. Q.; Shao K.; Bi Y. Y.; Labed J.

收藏 | 浏览/下载：33/0 | 提交时间：2014/12/24

evaporative fraction day-night differences validation Ameriflux sites remote-sensing data msg-seviri data soil-moisture air-temperature energy-balance net-radiation evapotranspiration estimation regional evapotranspiration shortwave radiation temporal evolution

Ground experiments on a liquid bridge facility for TG-2 space laboratory 会议论文 OAI收割
65th International Astronautical Congress 2014: Our World Needs Space, IAC 2014, Toronto, ON, Canada, September 29, 2014 - October 3, 2014
作者: Duan L(段俐); Kang Q(康琦)

收藏 | 浏览/下载：51/0 | 提交时间：2017/05/27

Convection modes Critical temperature difference Ground experiments Oscillation frequency Space experiments Space laboratory Surface deformation Temperature differences

Dust detection over desert surfaces with thermal infrared bands using dynamic reference brightness temperature differences SCI/SSCI论文 OAI收割
2013
Liu Y.; Liu R. G.; Cheng X.

收藏 | 浏览/下载：23/0 | 提交时间：2014/12/24

dust detection thermal infrared brightness temperature differences mineral dust tropospheric aerosols radiative signature saharan dust land retrieval channels seviri ocean identification