Jordi Vilà , Chiel van Heerwaarden
Bart van Stratum and Kees van den Dries
Interaction Land conditions
Dynamics and chemistry
atmospheric boundary layer
CLASS:
Introduction and Hands-on
1
Theory meets practice
to understand
the dynamics and chemistry
of the atmospheric boundary layer
interacting with land conditions
ABL
dynamics/
clouds
Atmospheric
chemistry
Land
Surface
Carbon
cycle
Sunrise
Sunset
Atmospheric turbulence yields
well-mixed conditions state variables
van Heerwaarden (2011)
Well-mixed profiles in the convective boundary layer
Vilà-Guerau de Arellano (2004)
Mixed-layer theory:
Integrating vertically
the state variables governing equations
Evolution of
mixed-layer potential temperature
Free troposphere
Vegetation/Surface
Atmospheric boundary layer
2
The tools
Web
Book
Software
Clips
http://classmodel.github.io/
Theory
Research method
Numerical exercises
Answers
3
Format of the lectures:
various options
Demonstration during a lecture (like today) to illustrate
CLASS capabilities: theory, sensitivity analysis,...
Practicals/Projects (2-3 hours) (Summer schools or
regular courses)
Short course (2-3 days).
Small workshop at the end of the course.
Flipped the classroom (weeks). Users/students are working
alone with 1-2 weekly discussion
Self-taught course
First support measurement interpretation
4
Evolution of the
convective boundary layer:
Surface versus Entrainment
processes
Practical 1:
Getting acquainted with the
CLASS software and the governing equations
Which processes control the temperature
maximum and CBL growth?
5
Interacting with the land:
What is the effect of drying
by air masses entrained from
the free troposphere?
Practical 2:
Sensitivity analysis to
free tropospheric conditions
van Heerwaarden (2009)
6
Clouds are coming:
Impact shallow convection in
the CBL dynamics
Practical 3:
Introducing the concept of
mass flux representation
and impact clouds on CBL development
van Stratum (2014)
7
Reactive CBL:
Introducing atmospheric chemistry
Practical 4:
Getting aquatinted to
basic chemical pathways
accounting with CBL dynamics
8
Research with CLASS:
FORTRAN and PYTHON
Research aims at:
large-scale models
Supporting interpretation field experiments
Space parameter study
h > LCL
Criteria
Vila et al. 2012
Research subjects treated using mixed-layer theory
Connecting fields under the mixed-layer theory umbrella