Results 101 to 110 of about 327,544 (281)

Disjunct eddy covariance technique for trace gas flux measurements [PDF]

, 2001
A new approach for eddy covariance flux measurements is developed and applied for trace gas fluxes in the atmospheric surface layer. In disjunct eddy covariance technique, quick samples with a relatively long time interval between them are taken instead ...
Warneke, C, Luxembourg, SL, de Gouw, JA, Guenther, AB, Rinne, HJI   +4 more
core   +1 more source

The characteristic of fractional uncertainty on eddy covariance measurement

Journal of Agricultural Meteorology, 2011
Micrometeorological heat, water, and CO2 fluxes have been widely monitored with the eddy covariance (EC) method. Its uncertainty information should be as important as the flux measurement itself and is indispensable to studies addressing site intercomparison, model validation, and model-data synthesis. Therefore, we estimated the fractional uncertainty
KIM, Wonsik, KOMORI, Daisuke, CHO, Jaeil
openaire   +2 more sources

Multi‐scale flow analysis for scale‐aware urban canopy models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We found that scale‐aware models are necessary when numerical weather prediction models approach hectometric resolution, which is associated with a characteristic length‐scale of morphological heterogeneity. This morphology‐dependent length‐scale indicates that resolved and unresolved heterogeneity are equally important.
Jingzi Huang, Maarten van Reeuwijk
wiley   +1 more source

Comparison of net ecosystem carbon exchange estimation in a mixed temperate forest using field eddy covariance and MODIS data

, 2016
Quantification of net ecosystem carbon exchange (NEE) between the atmosphere and vegetation is of great importance for regional and global studies of carbon balance.
Wang, YD, Munger, JW, Hou, XY, Tang, XG, Wang, YD (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China. ydwang@yic.ac.cn, Yu, LF   +5 more
core   +1 more source

Statistical Monitoring of Multivariate Count Data From Real‐Time Particle Counters

Quality and Reliability Engineering International, EarlyView.
ABSTRACT In the pharmaceutical industry, production environments are monitored for bacterial contamination. Particle counters are increasingly investigated for real‐time monitoring of viable microorganisms using count data for different particle size intervals.
Mona Emampour, Pieta C. Boon, Edwin R. van den Heuvel   +2 more
wiley   +1 more source

Modeling Carbon and Water Fluxes of Managed Grasslands: Comparing Flux Variability and Net Carbon Budgets between Grazed and Mowed Systems

Agronomy, 2019
The CenW ecosystem model simulates carbon, water, and nitrogen cycles following ecophysiological processes and management practices on a daily basis. We tested and evaluated the model using five years eddy covariance measurements from two adjacent but ...
Nicolas Puche, Nimai Senapati, Christophe R. Flechard, Katia Klumpp, Miko U.F. Kirschbaum, Abad Chabbi   +5 more
doaj   +1 more source

Application of an alternative method to derive reliable estimates of nighttime respiration from eddy covariance measurements in moderately complex topography

, 2008
Even moderately complex topography can lead to significant horizontal and vertical advection and a consequent underestimation of nocturnal CO2 effluxes derived from eddy covariance measurements on a single tower. The standard approach to select nighttime
Leuning, Ray, Keith, Heather, Suni, Tanja, Cleugh, Helen A, Kirschbaum, Miko UF, van Gorsel, Eva   +5 more
core   +1 more source

Eddy-covariance measurements over The Greenland Ice Sheet (K-transect & Q-transect) and Iceland (Vatnajökull)

, 2022
Eddy-covariance observations taken over rough ice and snow surfaces on the Greenland Ice Sheet and on the Vatnajökull ice cap in Iceland between 1996 and 2021. This data contains corrected 30-min averages, variances and covariances of wind components and
Reijmer, Carleen H, Fausto, Robert S, Box, Jason E, Van Tiggelen, Maurice, van As, Dirk, Smeets, Paul C J P, van den Broeke, Michiel R   +6 more
core   +1 more source

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

The Importance of Snow Sublimation on a Himalayan Glacier

Frontiers in Earth Science, 2018
Snow sublimation is a loss of water from the snowpack to the atmosphere. So far, snow sublimation has remained unquantified in the Himalaya, prohibiting a full understanding of the water balance and glacier mass balance. Hence, we measured surface latent
Emmy E. Stigter, Maxime Litt, Maxime Litt, Jakob F. Steiner, Pleun N. J. Bonekamp, Joseph M. Shea, Joseph M. Shea, Joseph M. Shea, Marc F. P. Bierkens, Marc F. P. Bierkens, Walter W. Immerzeel   +10 more
doaj   +1 more source