Objectives and Content
This course aims to give students the background for a basic description of turbulence and mixing in the boundary layer of atmosphere and ocean, and for assessing the relative importance and relevance of turbulence in processes related to meteorology, oceanography and climate.
An introduction to turbulence and turbulent exchange processes in the atmospheric boundary layer and the ocean mixed layer is given. The course covers homogenous turbulence theory, definition and measurement of turbulent fluxes, and the influence of stratification in the boundary layer in the atmosphere and in the ocean. The budget equations are derived, and the different terms are discussed. Various theoretical models based on simplifications of the budget equations are introduced and their practical importance for measurement and data analysis is highlighted. Air-sea and air-sea-ice interactions are briefly discussed together with the turbulence beneath sea ice. The vertical profiles of temperature and velocity, and their turbulent fluxes are described and discussed for different forcing conditions. An overview of the common instruments and measurement methods is given.
On completion of the course the student should have the following learning outcomes defined in terms of knowledge, skills and general competence:
- has a basic understanding of the salient features of turbulent boundary layers in atmosphere and ocean
- has knowledge on the spectral evolution of turbulence, and the dominant terms of the budget equations for turbulence
- has knowledge on sources and mechanisms driving turbulence in ocean and atmosphere, and at the boundary between them
- can calculate and interpret key turbulent parameters using direct and indirect methods from a corresponding data set
- can choose relevant instrumentation and method to measure and analyze data to describe the key turbulent parameters and fluxes in the atmosphere and ocean
- can estimate and discuss mixing and spreading of properties under different forcing conditions
- can assess the role of turbulent mixing in the global circulation and stratification of oceans
- can assess the role of turbulence for the structure and dynamics of the atmospheric boundary layer
Level of Study
Semester of Instruction
Autumn, runs only if enough students enrol.
Enrolment to this course is based on application. Application deadline is Thursday in week 33 for the autumn semester.
Please, see this page for more information: www.uib.no/en/matnat/53431/admission-courses-limited-capacity
Required Previous Knowledge
Credit Reduction due to Course Overlap
Access to the Course
Teaching and learning methods
1 exercise á 1 hour per week for 15 weeks
Compulsory Assignments and Attendance
Mandatory presentation of two exercises.
(Valid for four semesters: The semester mandatory activities have been approved and the three following semesters.)
Forms of Assessment
Forms of assessment:
- Oral examination (80 % of the final grade)
- Presentation of exercises (20 %).
The oral exam must be passed. The report and the presentation are valid the semester it was submitted and the 3 following semesters. The results from the two parts (oral examination and presentations) are added together to determine the final grade.
Examination both spring semester and autumn semester.
In semesters without teaching the examination will be arranged at the beginning of the semester.