Jielun Sun

General Information

MMM - TIIMES
Scientist III
BEACHON - BGS

Contact Information:
PO Box 3000, Boulder, CO 80307-3000
Office: FL3 - 3052
Telephone: 303-497-8994
Email: jsun@ucar.edu
Home Page - Vita

Research Focus FY08:

I continued my work on Carbon in the Mountain Experiment (CME-04) and Airborne Carbon in the Mountain Experiment (ACME-04) data analysis investigating CO₂/H₂O transport over complex terrain on a relatively large scale and within canopy.

I am also investigating how water body affects CO₂ transport at night by analyzing Niwot-07 data.

Based on my results on Cooperative Atmosphere-Surface Exchange Study (CASES99), I am focusing on trace gas transport over and within canopies by analyzing both CME-04 and Canopy Horizontal Array Turbulence Study (CHATS) datasets. CHATS infrared Images.

 

BEACHON - Southern Rocky Mountains Summer 2008 Study (BEACHON-SRM08)
July - September 2008, Woodland Park, Colorado at the Manitou Experimental Forest (MEF)

SRM08 is the initial research phase in the four year BEACHON research program in water-limited Western U.S. pin forest ecosystems that will improve the understanding of fundamental biogeochemical processes that are central to achieving the objectives of the BEACHON research program. BEACHON-SRM08 is considered a pre-study in advance of long-term measurements of key atmospheric and ecosystem parameters at the same site as well as a more comprehensive regional campaign in 2010. Because of this, the study has practical objectives relating to the setup and operation of the MEF site in addition to specific scientific foci on atmospheric chemistry and aerosol processes.

Community Service FY08:

• Associate Editor: Journal of Applied Meteorology
• Editorial Member: Boundary Layer Meteorology

Publications FY08 (abstracts):

Sun, J., Y. Zhang, 2008: Analysis and prediction of a squall line observed during IHOP using multiple WSR-88D observations. Mon. Wea. Rev., 136, 2364-2388, doi: 10.1175/2007MWR2205.1.

Sun, J., 2008: Nocturnal stable boundary layer parameterization: Part I: Momentum flux. Bound.-Layer Meteor.. (Submitted)

Sun, J., 2008: Nocturnal stable boundary layer parameterization: Part II: Heat flux. Bound.-Layer Meteor.. (Submitted)

Burns, S. P., A. Delany, J. Sun, B. B. Stephens, S. P. Oncley, G. D. Maclean, S. R. Semmer, J. Schroter, J. Ruppert, 2008: An evaluation of calibration techniques for in-situ carbon dioxide measurements using a programmable portable trace-gas measuring system. J. Atmos. Ocean. Technol., doi: 10.1175/2008JTECHA1080.1. (In Press)

Oncley, S. P., K. Schwenz, S. P. Burns, J. Sun, R. K. Monson, 2008: A cable-borne tram for atmospheric measurements along transects. J. Atmos. Ocean. Technol., doi: 10.1175/2008JTECHA1158.1. (In Press)

Patton, E. G., T. Horst, D. H. Lenschow, P. P. Sullivan, S. P. Oncley, S. P. Burns, A. B. Guenther, T. Karl, S. D. Mayor, S. M. Spuler, J. Sun, A. A. Turnipseed, E. Allwine, S. Edburg, B. Lamb, R. Avissar, H. Holder, R. Calhoun, J. Kleissl, W. Massman, K. Tha Paw U, J. Weil, L. Rizzo, A. Held, 2008: The Canopy Horizontal Array Turbulence Study (CHATS). , Stockholm, SE, AMS, American Meteorological Society, 18A.1.

Oncley, S. P., K. Schwenz, J. Sun, R. Monson, 2008: Measuring in-canopy advection of carbon dioxide using a new transect measurement system (TRAM). , Orlando, FL, US, J2.3.

Schaeffer, S. M., D. E. Anderson, S. P. Burns, R. K. Monson, J. Sun, D. R. Bowling, 2007: Canopy structure and atmospheric flows in relation to the dell3C of respired CO2 in a subalpine coniferous forest. Agric. For. Meteorol., 148, 592-605, doi: 10.1016/j.agrformet.2007.11.003.

Lenschow, D. H., J. Sun, 2007: The spectral composition of fluxes and variances over land and sea out to the mesoscale. Bound.-Layer Meteor., 125, 63-84, doi: 10.1007/s10546-007-9191-8.