Results 41 to 50 of about 21,118,339 (275)

S-NPP VIIRS thermal emissive bands on-orbit calibration and performance [PDF]

Journal of Geophysical Research: Atmospheres, 2014
Presented is an assessment of the on-orbit radiometric performance of the thermal emissive bands (TEB) of the Suomi National Polar-orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) instrument based on data from the first 2 years of operations—from 20 January 2012 to 20 January 2014.
Boryana Efremova, Jeff McIntire, David Moyer, Aisheng Wu, Xiaoxiong Xiong   +4 more
openaire   +1 more source

Variations of Terrestrial Net Primary Productivity in East Asia

Terrestrial, Atmospheric and Oceanic Sciences, 2012
Due to the heterogeneity and complexity of terrestrial ecosystems of East Asia, a better understanding of relationships between climate change and net primary productivity (NPP) distribution is important to predict future carbon dynamics.
Fangmin Zhang, Weimin Ju, Shuanghe Shen, Shaoqiang Wang, Guirui Yu, Shijie Han   +5 more
doaj   +1 more source

Impacts of Land Use Changes on Net Primary Productivity in Urban Agglomerations under Multi-Scenarios Simulation

Remote Sensing, 2022
Land use is closely related to the sustainability of ecological development. This paper employed a patch-generating land use simulation (PLUS) model for the multi-scenario simulation of urban agglomerations.
Yuhan Chen, Jia Wang, Nina Xiong, Lu Sun, Jiangqi Xu   +4 more
doaj   +1 more source

Drivers and uncertainties of future global marine primary production in marine ecosystem models [PDF]

Biogeosciences, 2015
Past model studies have projected a global decrease in marine net primary production (NPP) over the 21st century, but these studies focused on the multi-model mean rather than on the large inter-model differences. Here, we analyze model-simulated changes
C. Laufkötter, M. Vogt, N. Gruber, M. Aita-Noguchi, O. Aumont, L. Bopp, E. Buitenhuis, S. C. Doney, J. Dunne, T. Hashioka, J. Hauck, T. Hirata, J. John, C. Le Quéré, I. D. Lima, H. Nakano, R. Seferian, I. Totterdell, M. Vichi, C. Völker   +19 more
doaj   +1 more source

Using Ground Targets to Validate S-NPP VIIRS Day-Night Band Calibration [PDF]

Remote Sensing, 2016
In this study, the observations from S-NPP VIIRS Day-Night band (DNB) and Moderate resolution bands (M bands) of Libya 4 and Dome C over the first four years of the mission are used to assess the DNB low gain calibration stability. The Sensor Data Records produced by NASA Land Product Evaluation and Algorithm Testing Element (PEATE) are acquired from ...
Xuexia Chen, Aisheng Wu, Xiaoxiong Xiong, Ning Lei, Zhipeng Wang 0001, Kwo-Fu Chiang   +5 more
openaire   +3 more sources

Species Richness Net Primary Productivity and the Water Balance Problem

Entropy
Species energy theory suggests that, because of limitations on reproduction efficiency, a minimum density of plant individuals per viable species exists and that this minimum correlates the total number of plant individuals N with the number of species S.
Allen G. Hunt, Muhammad Sahimi, Erica A. Newman   +2 more
doaj   +1 more source

Stereochemical investigations on the biosynthesis of achiral (Z)-γ-bisabolene in Cryptosporangium arvum

Beilstein Journal of Organic Chemistry, 2019
A newly identified bacterial (Z)-γ-bisabolene synthase was used for investigating the cyclisation mechanism of the sesquiterpene. Since the stereoinformation of both chiral putative intermediates, nerolidyl diphosphate (NPP) and the bisabolyl cation, is ...
Jan Rinkel, Jeroen S. Dickschat
doaj   +1 more source

Temporal Variability in Net Primary Production in an Upwelling Area off Central Chile (36°S)

Frontiers in Marine Science, 2018
The temporal variability of Net Primary Production (NPP) off central Chile (36°S, 73°W), an area subjected to seasonal coastal upwelling, was analyzed using monthly in situ13C incubations within the photic zone, along with bio-oceanographic variables ...
Giovanni Testa, Giovanni Testa, Giovanni Testa, Italo Masotti, Italo Masotti, Laura Farías, Laura Farías   +6 more
doaj   +1 more source

A Multi-Perspective Assessment Method with a Dynamic Benchmark for Human Activity Impacts on Alpine Ecosystem under Climate Change

Remote Sensing, 2022
Intense human activities and rapid climate changes both have obvious impacts on alpine ecosystems. However, the magnitudes and directions of the impacts by these two drivers remain uncertain due to a lack of a reasonable assessment method to distinguish ...
Fuguang Zhang, Biao Zeng, Taibao Yang, Yuxuan Zheng, Ying Cao   +4 more
doaj   +1 more source

NbOx Mott Memristor‐Based Oscillatory P‐trit for Ternary Potts Machine

Advanced Science, EarlyView.
A ternary Potts machine utilizing NbOx‐based probabilistic trits (p‐trits) is demonstrated for efficient combinatorial optimization. By leveraging the electro‐thermal switching dynamics of NbOx memristors, this architecture generates three‐state stochastic fluctuations.
Hakseung Rhee, Seoeun Jang, Tae Wook Go, Woojoon Park, Gwangmin Kim, Do Hoon Kim, Hanchan Song, Younghyun Lee, Junmo Kang, Daehee Kim, Kyung Min Kim   +10 more
wiley   +1 more source