Selected breakpoints of net forest carbon uptake at four eddy-covariance sites
نویسندگان
چکیده
Extensive studies are available that analyse time series of carbon dioxide and water flux measurements FLUXNET sites over many years link these results to climate change such as changes in a...
منابع مشابه
Comprehensive comparison of gap-filling techniques for eddy covariance net carbon fluxes
We review 15 techniques for estimating missing values of net ecosystem CO2 exchange (NEE) in eddy covariance time series and evaluate their performance for different artificial gap scenarios based on a set of 10 benchmark datasets from six forested sites in Europe. The goal of gap filling is the reproduction of the NEE time series and hence this present work focuses on estimating missing NEE va...
متن کاملRemote sensing of evapotranspiration and carbon uptake at Harvard Forest
A land surface vegetation index, defined as the difference of microwave land surface emissivity at 19 and 37 GHz, was calculated for a heavily forested area in north central Massachusetts. The microwave emissivity difference vegetation index (EDVI) was estimated from satellite SSM/I measurements at the defined wavelengths and used to estimate land surface turbulent fluxes. Narrowband visible an...
متن کاملEddy covariance cospectra
Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract The cospectra of momentum (M), sensible heat (H), latent heat (LE), and carbon dioxide (Fc) fluxes measured by eddy covariance (EC) over a shortgrass steppe are calculated for over 800 time intervals spanning a range of...
متن کاملStatistical uncertainty of eddy flux–based estimates of gross ecosystem carbon exchange at Howland Forest, Maine
[1] We present an uncertainty analysis of gross ecosystem carbon exchange (GEE) estimates derived from 7 years of continuous eddy covariance measurements of forestatmosphere CO2 fluxes at Howland Forest, Maine, USA. These data, which have high temporal resolution, can be used to validate process modeling analyses, remote sensing assessments, and field surveys. However, separation of tower-based...
متن کاملFluoride Uptake and Net Primary Productivity of Selected Crops
Crop field soil collected from Sambalpur University campus of Odisha and treated with various fluoride concentrations was used to raise selected local crops. Background concentration of total and leachable fluoride content in soil was 95.19 and 8.89 ppm respectively. At the time of harvest of the crops, the total fluoride content was found to decrease and leachable fluoride content was found to...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tellus B
سال: 2021
ISSN: ['0280-6509', '1600-0889']
DOI: https://doi.org/10.1080/16000889.2021.1915648