Results 71 to 80 of about 63,059,936 (298)

Model simulations on the long-term dispersal of 137Cs released into the Pacific Ocean off Fukushima

Environmental Research Letters, 2012
A sequence of global ocean circulation models, with horizontal mesh sizes of 0.5°, 0.25° and 0.1°, are used to estimate the long-term dispersion by ocean currents and mesoscale eddies of a slowly decaying tracer (half-life of 30 years, comparable to that
Erik Behrens, Franziska U Schwarzkopf, Joke F Lübbecke, Claus W Böning   +3 more
doaj   +1 more source

NOAA Reports Potent Greenhouse Gas Levels Off [PDF]

, 2003
This document provides a summary of a study by NOAA researchers and National Institute for Space Research in the Netherlands. According to the study, one of the atmosphere's most potent greenhouse gases, methane, may now have leveled off. Scientists aren'
NOAA News Online
core  

Identifying forest features that increase resiliency of southern‐boundary snowshoe hare populations in Pennsylvania

The Journal of Wildlife Management, EarlyView.
Snowshoe hare population densities in Pennsylvania were greatest in early‐successional forest and densely‐understoried mature forest. Forest management that increases and maintains the amount of early‐successional forest, or that increases understory complexity in mature forest, would benefit snowshoe hares and may mitigate population declines under ...
Amanda L. Zak, Duane R. Diefenbach, Emily S. Boyd, Jessie E. Edson, Cassandra M. Miller‐Butterworth   +4 more
wiley   +1 more source

Integrated Prediction and Analysis of Soil Erosion and Soil Organic Carbon Loss in the Dayekou Watershed, Qilian Mountains

Land Degradation &Development, EarlyView.
ABSTRACT Soil erosion poses a critical threat to ecological security in mountain watersheds worldwide. Predicting its dynamics and associated soil organic carbon (SOC) loss remains an ongoing challenge during the 21st century due to complex interactions among climate, land use, and topography.
Yongde Kang, Shizhe Han, Xiaofeng Ren, Erwen Xu   +3 more
wiley   +1 more source

Evaluation of VIIRS Thermal Emissive Bands Long-Term Calibration Stability and Inter-Sensor Consistency Using Radiative Transfer Modeling

Remote Sensing
This study investigates the long-term stability of the Suomi National Polar-orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) moderate-resolution Thermal Emissive Bands (M TEBs; M12–M16) covering a period from February 2012 ...
Feng Zhang, Xi Shao, Changyong Cao, Yong Chen, Wenhui Wang, Tung-Chang Liu, Xin Jing   +6 more
doaj   +1 more source

Penentuan Ukuran Pixel Citra NOAA/AVHRR

, 1994
Variasi ukuran pixel .citra NOAA/AVHRR menyebabkan penyimpangan penampakan citra dan perbedaan informasi antar pixel. Penyimpangan penampakan citra yang disebabkan adanya kesalahan geometris dapat diakibatkan oleh bentuk kurva bumi, rotasi bumi, variasi ...
Orbita Roswintiarti, Ety Parwati, Indah Prasasti, Sri Harini Pramono   +3 more
core  

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith, Austin Grubb, Kay D. Bidle, Kimberlee Thamatrakoln, Adam V. Subhas   +4 more
wiley   +1 more source

Quantifying coastal ocean anthropogenic carbon changes and their uncertainties

Limnology and Oceanography: Methods, EarlyView.
Abstract Despite recent progress in quantifying anthropogenic carbon (Canth) in global oceans, coastal regions remain understudied due to methodological and observational challenges. Here, we develop and generalize a Regional rEgression–based Coastal Anthropogenic carbon estimation algorithm (RECA) designed specifically for coastal environments ...
Xinyu Li, Brendan Carter
wiley   +1 more source

Monitoring shallow geothermal aquifers with active‐source distributed acoustic sensing: A prognostic feasibility study on the University of Leeds Geothermal Campus

Near Surface Geophysics, EarlyView.
Abstract The United Kingdom's shallow aquifers offer significant but underdeveloped geothermal energy resource. Seismic methods can help address this by improving the understanding of aquifer heterogeneity and potentially allowing long‐term monitoring of thermal plumes.
Adam D. Booth, Roger A. Clark, Andy Nowacki, Ravi Myanger, Joseph Kelly, Sjoerd de Ridder, Arka Dyuti Sarkar, Fleur Loveridge, Richard Collier, Emma Bramham, David Healy   +10 more
wiley   +1 more source

Radiometric Inter-Consistency of VIIRS DNB on Suomi NPP and NOAA-20 from Observations of Reflected Lunar Lights over Deep Convective Clouds

Remote Sensing, 2019
The Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band (DNB) is capable of observing reflected lunar radiances at night with its high gain stage (HGS), and the radiometric calibration is traceable to the sun through gain transfer from the ...
Changyong Cao, Yan Bai, Wenhui Wang, Taeyoung Choi   +3 more
doaj   +1 more source