Eddy-covariance measurement data under different source emission heights and rates

This data show eddy-covariance measurements under the impacts of altering the emission height and rate through utilizing an artificial source emission system. The results demonstrated a significant impact of changes in the emission height and rate on the EC measurements. Two emission heights, specifically 10 cm and 60 cm above the soil surface, representing the soil level (SL) and canopy level (CL), respectively. Three emission rates were releasing 4.48, 8.21, and 12.68 standard mL CH₄/20s, respectively, corresponding to low emission (LE), moderate emission (ME), and high emission (HE).The raw data are similar format to EC calculated fluxes from Eddypro, including variables such as “datetime”, “temperature”, “flux”, and so on. The details can be seen by Liu et al. (2022):“Liu, S., Liu, G., Zhang, M., et al.: Evaluation of eddy covariance footprint models through the artificial line source emission of methane. Journal of Geophysical Research: Atmospheres, 2022, 127, e2021JD036294.”Different data from the date of 3-24, 4-06, 4-09, 4-21, 4-26, 4-28, and 4-28 correspond to different emission conditions, such as SL-ME, SL-HE, the details can be seen as the table below:DateStrat timeEnd timeEmission rateEmission height2020-3-2412:4818:051078.61102020-4-0615:4818:301626.50102020-4-0910:0413:301413.32102020-4-2112:5018:10962.66602020-4-2608:2013:20452.01602020-4-2809:4014:30589.57102020-4-2814:4016:30574.0660<br>