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Filtering by: Creator Schlax, Michael C. Remove constraint Creator: Schlax, Michael C. Academic Affiliation College of Oceanic and Atmospheric Sciences Remove constraint Academic Affiliation: College of Oceanic and Atmospheric Sciences Degree Field Atmospheric Sciences Remove constraint Degree Field: Atmospheric Sciences

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A nonlocal mixing formulation for the atmospheric boundary layer

Creator:

Frech, Michael C.

Abstract:

A two-scale approach for the turbulent mixing of momentum in an unstable stratified boundary layer is proposed in an attempt to eliminate existing inconsistencies between parameterized mixing of heat and momentum. The parameterization of the large eddy stress is suitable for simple boundary layer models where computational efficiency is important....

Resource Type:

Masters Thesis

Full Text:

AN ABSTRACT OF THE THESIS OF Michael C. Frech for the degree of
Carbon and energy exchange of semi-arid ecosystems with heterogeneous canopy structure

Creator:

Anthoni, Peter M.

Abstract:

Carbon and energy fluxes were measured with the eddy covariance technique above two semi-arid ecosystems, ponderosa pine and juniper/sagebrush, located in central Oregon. The two ecosystems have low LAI and a very open canopy structure. The energy closure was ~70-80% at both ecosystems, equivalent to an imbalance of 150-250 W...

Resource Type:

Dissertation

Full Text:

grateful to my advisor, Dr. Michael H. Unsworth. His experience and commitment all through the long
Development of a synoptic map-pattern climatology to supplement current weather forecasting methods

Creator:

Frey, Melissa D. (Melissa Dawn)

Abstract:

Many meteorologists rely heavily on their experience of past weather events to supplement their forecasting tools, such as using past experience to help decide between conflicting numerical weather prediction models. Experiential knowledge is an important piece of forecasting, however it is highly subjective and variable from one forecaster to another....

Resource Type:

Masters Thesis

Full Text:

Methods Abstract approved: ______________________________________________ Michael H
Transpiration and the atmospheric boundary layer : progress in modeling feedback mechanisms

Creator:

Heinsch, Faith Ann

Abstract:

Simple models of transpiration, e.g., the Penman-Monteith equation, treat atmospheric conditions as driving variables. In fact, transpiration modifies temperature and humidity throughout the convective boundary layer, creating feedbacks that stabilize the water use of vegetation. This thesis concentrates on the new empirical relationships proposed by Monteith (1995), for developing simple...

Resource Type:

Masters Thesis

Full Text:

' and the temperature is 25°C (adapted from Jarvis et al 1976). Values of a and g are also shown for
Air-sea heat exchange along the northern sea surface temperature front in the eastern tropical Pacific

Creator:

Thum, Nicolai

Abstract:

The atmospheric response to the oceanic forcing in the eastern Pacific along the northern equatorial sea surface temperature (SST) front is investigated in terms of sensible and latent heat flux during the 6-month period 28 July 1999 through 27 January 2000. Of particular interest is the atmospheric boundary layer (ABL)...

Resource Type:

Masters Thesis

Full Text:

committee: Dudley B. Chelton, Michael H. Freilich, Larry Mahrt and Michael M. Lerner for their time
Effects of solar heating on the indirect effect of aerosols as deduced from observations of ship tracks

Creator:

Christensen, Matthew W.

Abstract:

One kilometer Moderate Resolution Imaging Spectroradiometer (MODIS) observations for Terra (morning) and Aqua (afternoon) satellites were used to follow the morning to afternoon evolution of marine stratocumulus clouds that were affected by ship stack exhaust. The observations covered the summer months of 2002-2003 and August 2007 for marine layers off...

Resource Type:

Masters Thesis

Full Text:

) c) and Aqua (Δ) d) with the pixels identified as polluted (red) and unpolluted (blue), the
Properties of semitransparent upper-level clouds deduced from multispectral imagery data

Creator:

Lin, Xijian

Abstract:

A multispectral retrieval method is developed on the 100 km regional scale to extract the temperature, particle size, fractional cover and 11-μm emissivity of clouds which may be semitransparent in the infrared based on emitted radiances. The scheme utilizes the nonlinear relationship between emitted radiances when clouds are semitransparent and...

Resource Type:

Dissertation

Full Text:

Abbott, Ted Strub, Michael H. Unsworth, and Richard J. Vong. Thanks go to those faculty members and
The weather pattern and trends associated with Gulf Stream turbulent heat loss events

Creator:

Loyd, Nicholas

Abstract:

The weather pattern and trends associated with heat flux events (HFEs) over the Gulf Stream (GS) are examined as part of the CLIMODE project. A large portion of GS turbulent heat loss occurs during distinct synoptic scale events with a duration of one to two days. Forty percent (40%) of...

Resource Type:

Masters Thesis

Full Text:

temperature gradient of 0.7° to 0.8° Celsius (C) (100 m) −1 , while the gradient for recently isolated EDW
Properties of marine stratus and stratocumulus derived using collocated MODIS and CALIPSO observations

Creator:

Hayes, Christopher R.

Abstract:

Adiabatic parcel models suggest specific relationships between cloud thickness and cloud properties. Such relationships govern cloud radiative forcing and thus cloud feedbacks in the climate system. Current remote sensing techniques work well at measuring these properties in low-level cloud systems that are overcast. Significant biases exist, however, when measuring cloud...

Resource Type:

Masters Thesis

Full Text:

coefficients. Image b) is a MODIS 11-µm infrared image and image c) is the MODIS 0.84-µm “visible” image
Properties of low-level marine clouds as deduced from advanced very high resolution radiometer satellite observations

Creator:

Chang, Fu-Lung

Abstract:

A radiation model was developed for retrieving cloud visible optical depth, droplet effective radius, and cloud top emission temperature using AVHRR satellite observations at 0.63, 3.7, and 11 μm. The model was used to determine the sensitivity of the retrieved properties to various approximations often employed in such retrievals. Droplet...

Resource Type:

Dissertation

Full Text:

. Jeffrey Barnes, Terence Brown, Steven Esbensen, Walter Rudd, Ted Strub, and Michael Unsworth for

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Academic Affiliation

College of Oceanic and Atmospheric Sciences[remove]17

Advisor

Coakley, James A., jr.6
Mahrt, Larry3
Unsworth, Michael H.3
Barnes, Jeffrey R.2
Esbensen, Steven K.2
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1994 to 2011

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Committee Member

Unsworth, Michael4
Skyllingstad, Eric3
Chelton, Dudley B.2
Strub, Ted2
Unsworth, Michael H.2
more Committee Members »

Creator

Thum, Nicolai2
Anthoni, Peter M.1
Bennett, Scott1
Chang, Fu Lung1
Christensen, Matthew W.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1993 to 2010

View distribution

Decade

2010-20191
2000-200910
1990-19996

Degree Field

Atmospheric Sciences[remove]17

Degree Level

Master's10
Doctoral7

Degree Name

Master of Science (M.S.)10
Doctor of Philosophy (Ph.D.)7

File Format

application/pdf3

Language

English [eng]17

License

All rights reserved8

Non-Academic Affiliation

Oregon State University. Graduate School17

Peer Reviewed

No16

Resource Type

Masters Thesis10
Dissertation7

Rights Statement

Copyright Not Evaluated9
In Copyright8

Subject

Boundary layer (Meteorology)2
Mars (Planet) -- Atmosphere2
Planetary boundary layer -- Mathematical models2
Turbulent boundary layer2
Aerosols -- Environmental aspects1
more Subjects »

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