RT info:eu-repo/semantics/article
T1 Analysis of CO2 daily cycle in the low atmosphere at a rural site
A1 Pérez Bartolomé, Isidro Alberto
A1 Sánchez Gómez, María Luisa
A1 García Pérez, María Ángeles
A1 Pardo Gómez, Nuria
K1 Rural CO2
K1 CO2 gradient
K1 Weighted average
K1 Asymmetric circular function
K1 Conditional probability
AB Directional analysis procedures were extended to study the CO2 daily cycle in the low atmosphere at a ruralsite. Weighted average, asymmetric circular functions, and conditional probability curves were applied toconcentrations recorded at three levels near surface. Wind speed and potential temperature gradient werethe meteorological variables used to establish a link to CO2. The highest weighted concentration was obtainedfor wind speed below 4 m s−1 and for potential temperature gradient above 0.05 °C m−1. Asymmetric circularfunctions were fitted to selected percentiles, the generalized von Mises function providing the lowestRMSE. Slight differences among levels were observed in the transition between day and night, and highergradients were observed during the night. Four intervals were proposed when concentrations were binnedby intervals of meteorological variables. Wind speed was only relevant to separate intermediate concentrations.Finally, conditional probability curves provided differences between the highest and lowest levels inup to 20% of cases at 20–22 GMT.
PB Elsevier
SN 0048-9697
YR 2012
FD 2012
LK https://uvadoc.uva.es/handle/10324/65492
UL https://uvadoc.uva.es/handle/10324/65492
LA eng
NO Science of the Total Environment 431 (2012) 286–292
NO Producción Científica
DS UVaDOC
RD 24-nov-2024