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Open AccessJournal ArticleDOI

Representativeness of Eddy-Covariance flux footprints for areas surrounding AmeriFlux sites

Housen Chu, +74 more
- 15 May 2021 - 
- Iss: 4, pp 108350
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TLDR
In this article, the authors evaluate the representativeness of flux footprints and evaluate potential biases as a consequence of the footprint-to-target-area mismatch, which can be used as a guide to identify site-periods suitable for specific applications.
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This article is published in Agricultural and Forest Meteorology.The article was published on 2021-05-15 and is currently open access. It has received 137 citations till now. The article focuses on the topics: Flux footprint & Enhanced vegetation index.

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Tracking vegetation phenology across diverse North American biomes using PhenoCam imagery: A new, publicly-available dataset

TL;DR: In this article, the authors presented a series of datasets, together consisting of almost 750 years of observations, characterizing vegetation phenology in diverse ecosystems across North America, derived from conventional, visible-wavelength, automated digital camera imagery collected through the PhenoCam network, with RGB (red, green, blue) colour channel information, with means and other statistics calculated across a region-of-interest (ROI) delineating a specific vegetation type.

Biosphere-atmosphere exchange of CO2 in relation to climate

TL;DR: In this article, the authors quantify the strength of the interactions between gappy eddy covariance flux and micrometeorological measurements at multiple frequencies while expressing time series variance in few energetic wavelet coefficients, offering a low-dimensional view of the response of terrestrial carbon flux to climate variability.
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FLUXNET-CH4: a global, multi-ecosystem dataset and analysis of methane seasonality from freshwater wetlands

Kyle B. Delwiche, +112 more
TL;DR: The FLUXNET-CH4 dataset as mentioned in this paper is the first open-source global dataset of CH4 EC measurements and includes half-hourly and daily gap-filled and non-gap-filled aggregated CH4 fluxes and meteorological data from 79 sites globally: 42 freshwater wetlands, 6 brackish and saline wetlands, 7 formerly drained ecosystems, 7 rice paddy sites, 2 lakes and 15 uplands.
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Detecting forest response to droughts with global observations of vegetation water content.

Alexandra G. Konings, +38 more
TL;DR: In this article, the authors introduce an ecosystem-scale analog of the pressure volume curve, the non-linear relationship between average leaf or branch water potential and water content commonly used in plant hydraulics.

A Simple Two-dimensional Parameterisation for Flux Footprint Predictions

TL;DR: In this paper, a two-dimensional footprint model for flux footprint prediction is proposed, based on a novel scaling approach for the crosswind distribution of the footprint and on an improved version of footprint parameterisation of Kljun et al.
References
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Journal Article

R: A language and environment for statistical computing.

R Core Team
- 01 Jan 2014 - 
TL;DR: Copyright (©) 1999–2012 R Foundation for Statistical Computing; permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and permission notice are preserved on all copies.
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Overview of the radiometric and biophysical performance of the MODIS vegetation indices

TL;DR: In this paper, the authors evaluated the performance and validity of the MODIS vegetation indices (VI), the normalized difference vegetation index (NDVI) and enhanced vegetation index(EVI), produced at 1-km and 500-m resolutions and 16-day compositing periods.
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ggmap: Spatial Visualization with ggplot2

David Kahle, +1 more
- 01 Jan 2013 - 
TL;DR: This article details some new methods for the visualization of spatial data in R using the layered grammar of graphics implementation of ggplot2 in conjunction with the contextual information of static maps from Google Maps, OpenStreetMap, Stamen Maps or CloudMade Maps and presents an overview of a few utility functions.
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Criteria for the selection of stochastic models of particle trajectories in turbulent flows

TL;DR: In this paper, the relationships between the various criteria are examined for a very general class of models and it is shown that most of the criteria are equivalent and also how a model can be designed to satisfy these criteria exactly and to be consistent with inertial-subrange theory.
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