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Accurate estimation of global terrestrial evapotranspiration (ET) is essential to understanding changes in the water cycle, which are expected to intensify in the context of climate change. Current global ET products are derived from…

大气与海洋物理 · 物理学 2023-09-14 Haiyang Shi

Estimating historical evapotranspiration (ET) is essential for understanding the effects of climate change and human activities on the water cycle. This study used historical weather station data to reconstruct ET trends over the past 300…

大气与海洋物理 · 物理学 2024-07-25 Haiyang Shi

Evapotranspiration (ET) plays a critical role in the land-atmosphere interactions, yet its accurate quantification across various spatiotemporal scales remains a challenge. In situ measurement approaches, like eddy covariance (EC) or…

机器学习 · 计算机科学 2025-10-14 Aleksei Rozanov , Samikshya Subedi , Vasudha Sharma , Bryan C. Runck

Water is a key component of life, the natural environment and human health. For monitoring the conditions of a water body, the chlorophyll a concentration can serve as a proxy for nutrients and oxygen supply. In situ measurements of water…

计算机视觉与模式识别 · 计算机科学 2019-07-02 Philipp M. Maier , Sina Keller

The photoelectric heating is believed to be the main heating mechanism in cool HI clouds. The heating rate can be estimated through observations of the [CII] line emission, since this is the main coolant in regions where the photoelectric…

天体物理学 · 物理学 2008-11-26 M. Juvela , P. Padoan , R. Jimenez

Increasing vapor pressure deficit (VPD) increases atmospheric demand for water. While increased evapotranspiration (ET) in response to increased atmospheric demand seems intuitive, plants are capable of reducing ET in response to increased…

大气与海洋物理 · 物理学 2019-09-19 Adam Massmann , Pierre Gentine , Changjie Lin

This study aims to describe the response of two persistent chlorophyll-a maxima to physical processes affecting the thermocline and nitracline position in the Eastern Tropical North Pacific (ETNP). We focused on Long Rossby Waves given…

Fast Repetition Rate fluorometry (FRRf) generates high-resolution measures of phytoplankton primary productivity as electron transport rates (ETRs). How ETRs scale to corresponding inorganic carbon (C) uptake rates (the so-called electron…

Studying crop photosynthesis is crucial for improving yield, but current methods are labor-intensive. This research aims to enhance accuracy by combining leaf reflectance and sun-induced chlorophyll fluorescence (SIF) signals to estimate…

信号处理 · 电气工程与系统科学 2023-12-04 Yu-an Zhou , Li Zhai , Weijun Zhou , Ji Zhou , Haiyan Cen

Chlorosomes are the largest and most efficient natural light-harvesting antenna systems. They contain thousands of pigment molecules - bacteriochlorophylls (BChls)- that are organized into supramolecular aggregates and form a very efficient…

Monitoring vegetation productivity at extremely fine resolutions is valuable for real-world agricultural applications, such as detecting crop stress and providing early warning of food insecurity. Solar-Induced Chlorophyll Fluorescence…

计算机视觉与模式识别 · 计算机科学 2022-07-19 Joshua Fan , Di Chen , Jiaming Wen , Ying Sun , Carla P. Gomes

Reference Evapotranspiration (ET0) is a key parameter for designing smart irrigation scheduling, since it is related by a coefficient to the water needs of a crop. The United Nations Food and Agriculture Organization, proposed a standard…

人工智能 · 计算机科学 2024-03-28 Pedro J. Vaz , Gabriela Schütz , Carlos Guerrero , Pedro J. S. Cardoso

The concept of surface-flux transport (SFT) is commonly used in evolving models of the large-scale solar surface magnetic field. These photospheric models are used to determine the large-scale structure of the overlying coronal magnetic…

太阳与恒星天体物理 · 物理学 2023-04-12 Graham Barnes , Marc L. DeRosa , Shaela I. Jones , Charles N. Arge , Carl J. Henney , Mark C. M. Cheung

Electronic Energy Transfer (EET) between chromophores is fundamental in many natural light-harvesting complexes, serving as a critical step for solar energy funneling in photosynthetic plants and bacteria. The complicated role of the…

化学物理 · 物理学 2024-02-05 Colin Coane , Marco Romanelli , Giulia Dall'Osto , Rosa Di Felice , Stefano Corni

The partitioning of precipitation (P) water input on land between green (evapotranspiration, ET) and blue (runoff, R) water fluxes distributes the annually renewable freshwater resource among sectors and ecosystems. We decipher the…

地球物理 · 物理学 2023-02-23 Daniel Althoff , Georgia Destouni

This study proposes a new method for computing transpiration across an eddy covariance footprint using field observations of plant sap flow, phytomorphology sampling, uncrewed aerial system (UAS), deep learning-based digital image…

种群与进化 · 定量生物学 2025-07-22 Habibur R. Howlider , Hernan A. Moreno , Marguerite E. Mauritz , Stephanie N. Marquez

Motivated by low-altitude cusp observations of small-scale (~ 1 km) field-aligned currents (SSFACs) interpreted as ionospheric Alfv\'en resonator modes, we investigated the effects of Alfv\'en wave energy deposition on thermospheric…

空间物理 · 物理学 2021-01-06 Benjamin Hogan , William Lotko , Kevin Pham

Marine chlorophyll concentration is an important indicator of ecosystem health and carbon cycle strength, and its accurate prediction is crucial for red tide warning and ecological response. In this paper, we propose a LSTM-RF hybrid model…

Electron transpiration cooling (ETC) can reduce aerothermal loads on sharp hypersonic leading edges, but its performance is governed by whether thermionically emitted electrons escape the hot surface or return as cathode-directed backflow.…

等离子体物理 · 物理学 2026-05-11 Wushun Zhang , Weixing Zhou , Yinjian Zhao

Various bright structures abound in the chromosphere playing an essential role in the dynamics and evolution therein. Tentatively identifying the wave characteristics in the outer solar atmosphere helps to understand this layer better. One…

太阳与恒星天体物理 · 物理学 2022-10-26 Rayhane Sadeghi , Ehsan Tavabi
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