\documentclass[10pt]{article}

\usepackage{fullpage}
\usepackage{setspace}
\usepackage{parskip}
\usepackage{titlesec}
\usepackage[section]{placeins}
\usepackage{xcolor}
\usepackage{breakcites}
\usepackage{lineno}
\usepackage{hyphenat}





\PassOptionsToPackage{hyphens}{url}
\usepackage[colorlinks = true,
            linkcolor = blue,
            urlcolor  = blue,
            citecolor = blue,
            anchorcolor = blue]{hyperref}
\usepackage{etoolbox}
\makeatletter
\patchcmd\@combinedblfloats{\box\@outputbox}{\unvbox\@outputbox}{}{%
  \errmessage{\noexpand\@combinedblfloats could not be patched}%
}%
\makeatother


\usepackage{natbib}




\renewenvironment{abstract}
  {{\bfseries\noindent{\abstractname}\par\nobreak}\footnotesize}
  {\bigskip}

\titlespacing{\section}{0pt}{*3}{*1}
\titlespacing{\subsection}{0pt}{*2}{*0.5}
\titlespacing{\subsubsection}{0pt}{*1.5}{0pt}


\usepackage{authblk}


\usepackage{graphicx}
\usepackage[space]{grffile}
\usepackage{latexsym}
\usepackage{textcomp}
\usepackage{longtable}
\usepackage{tabulary}
\usepackage{booktabs,array,multirow}
\usepackage{amsfonts,amsmath,amssymb}
\providecommand\citet{\cite}
\providecommand\citep{\cite}
\providecommand\citealt{\cite}
% You can conditionalize code for latexml or normal latex using this.
\newif\iflatexml\latexmlfalse
\providecommand{\tightlist}{\setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}%

\AtBeginDocument{\DeclareGraphicsExtensions{.pdf,.PDF,.eps,.EPS,.png,.PNG,.tif,.TIF,.jpg,.JPG,.jpeg,.JPEG}}

\usepackage[utf8]{inputenc}
\usepackage[english]{babel}



\usepackage{float}








\begin{document}

\title{A physics-based universal indicator for vertical decoupling and mixing
across canopies architectures and dynamic stabilities}



\author[1]{Olli Peltola}%
\author[2]{Karl E. Lapo}%
\author[2]{Christoph K Thomas}%
\affil[1]{Finnish Meteorological Institute}%
\affil[2]{University of Bayreuth}%


\vspace{-1em}



  
  \date{May 24, 2024}


\begingroup
\let\center\flushleft
\let\endcenter\endflushleft
\maketitle
\endgroup





\selectlanguage{english}
\begin{abstract}
Air flows may be decoupled from the underlying surface either due to
strong stratification of air or due to canopy drag suppressing
cross-canopy mixing. During decoupling, turbulent fluxes vary with
height and hence identification of decoupled periods is crucial for the
estimation of surface fluxes with the eddy-covariance (EC) technique and
computation of ecosystem-scale carbon, heat, and water budgets. A new
indicator for identifying the decoupled periods is derived using forces
(buoyancy and canopy drag) hindering movement of a downward propagating
air parcel. This approach improves over the existing methods since 1)
changes in forces hindering the coupling are accounted for and 2) it is
based on first principles and not on ad-hoc empirical correlations. The
applicability of the method is demonstrated at two contrasting EC sites
(flat open terrain, boreal forest) and should be applicable also at
other EC sites above diverse ecosystems (from grasslands to dense
forests).%
\end{abstract}%



\sloppy




\selectlanguage{english}
\FloatBarrier
\end{document}

