Baroclinic Ekman spirals Atm S 547 Lecture 7, Slide 1 Surface wind - - PowerPoint PPT Presentation

▶
baroclinic ekman spirals
SMART_READER_LITE
LIVE PREVIEW

Baroclinic Ekman spirals Atm S 547 Lecture 7, Slide 1 Surface wind - - PowerPoint PPT Presentation

Apr 25, 2023 46 likes •164 views

Baroclinic Ekman spirals Atm S 547 Lecture 7, Slide 1 Surface wind crossing angle vs. thermal wind Hoxit 1974 Atm S 547 Lecture 7, Slide 2 Cold advection: Warm advection: Over water: cross-isobar flow Along-isobar flow along-isobar flow

slide-1
SLIDE 1

Atm S 547 Lecture 7, Slide 1

Baroclinic Ekman spirals

slide-2
SLIDE 2

Atm S 547 Lecture 7, Slide 2

Surface wind crossing angle vs. thermal wind

Hoxit 1974

slide-3
SLIDE 3

Atm S 547 Lecture 7, Slide 3

Cold advection: cross-isobar flow Warm advection: Along-isobar flow Over water: along-isobar flow

slide-4
SLIDE 4

Atm S 547 Lecture 7, Slide 4

Horizontal sections of u’ from LES of shear-driven turbulence

slide-5
SLIDE 5

Atm S 547 Lecture 7, Slide 5

LES vertical section of u’ in shear-driven PBL

slide-6
SLIDE 6

Atm S 547 Lecture 7, Slide 6

Rolls in LES weakly convective PBL

slide-7
SLIDE 7

Atm S 547 Lecture 7, Slide 7

Convective PBL (Rayleigh-Benard)

slide-8
SLIDE 8

Atm S 547 Lecture 7, Slide 8

Velocity variance profiles

slide-9
SLIDE 9

Atm S 547 Lecture 7, Slide 9

TKE budgets

Moeng and Sullivan 1994

slide-10
SLIDE 10

Atm S 547 Lecture 7, Slide 10

LES-simulated entrainment event in a convective PBL

Sullivan et al. 1998

slide-11
SLIDE 11

Atm S 547 Lecture 8, Slide 11

Observational support for DCBL entrainment closure

′ w ′ b (h) = −0.2B0