Research projects

Email: jsun@ucar.edu
Phone: 303-497-8994
Postal Address: P.O. Box 3000, Boulder, CO, 80307-3000
Shipping Address: 3090 Center Green Drive, Boulder, CO, 80301

Professional Interests

Jielun has worked in the areas of dynamic meteorology, mountain meteorology, mesoscale meteorology, satellite meteorology, microscale meteorology, ozone and carbon dioxide transport, air-sea interactions, parameterizations of subgrid variables for numerical models, turbulence transport over heterogeneous and complex surfaces, and forest meteorology. She has participated in a number of field experiments. Her current research interests include turbulence intermittency under stable conditions, fundamental turbulence transport theory and parameterization of turbulence transport in the planetary atmospheric boundary layer, trace gas transport over complex terrain, atmosphere-ecosystem interactions, and air-land interactions and turbulence parameterization over heterogeneous surfaces.

Van de Wiel, B. J. H., A. F. Moene, H. J. J. Jonker, P. Baas, S. Basu, J. M. M. Donda, J. Sun, and A. A. M. Holtslag, 2012: The minimum wind speed for sustainable turbulence in the nocturnal boundary layer. J. Atmos. Sci., 69, 3116-3127. pdf

Choughle, A., J. Mann, M. Kelly, J. Sun, D. H. Lenschow, and E. G. Patton, 2012: Vertical cross-spectral phases in neutral atmospheric flow. J. Turbulence, 13, N36. pdf

Sun, J., L. Mahrt, R. M. Banta, and Y. L. Pichugina, 2012: Turbulence regimes and turbulence intermittency in the stable boundary layer during CASES99. J. Atmos. Sci., 69, 338-351. pdf

Sun, J., and S. F. J. De Wekker, 2011: Atmospheric carbon dioxide transport over mountain terrain. Chapter 5, Mountain Ecosystems: Dynamics, Management and Conservation. Ed. by Kevin E. Richards, Nova Science Publishers, Inc. Open Access

Sun, J. 2011: Vertical variations of mixing length under neutral and stable conditions during CASES99. J. Appl. Meteorol. Clim., 50, 2030-2041. pdf

Burns, S. P., J. Sun, D. H. Lenschow, S. P. Oncley, B. B. Stephens, C. Yi, D. E. Anderson, J. Hu, R. K. Monson, 2011: Atmospheric stability effects on wind fields and scalar mixing within and just above a subalpine forest in sloping terrain. Boundary-Layer Meteorol., 138, 231-262. pdf

Patton, E. G., T. W. Horst, P. P. Sullivan, D. H. Lenschow, S. P. Oncley, W. O. J. Brown, S. P. Burns, A. B. Guenther, A. Held, T. Karl, S. D. Mayor, L. V. Rizzo, M. Spuler, J. Sun, A. A. Turnipseed, E. J. Allwine, S. L. Edburg, B. K. Lamb, R. Avissar, R. Calhoun, J. Kleissl, W. J. Massman, K. T. Paw U, J. C. Weil, 2010: The canopy horizontal array turbulence study (CHATS). Bull. Amer. Meteorol., 92(5), 593-611. pdf

Sun, J., S. P. Oncley, S. Burns, B. B. Stephens, D. H. Lenschow, T. Campos, R. K. Monson, D. S. Schimel, W. J. Sacks, S. F. J. De Wekker, C.-T. Lai, B. Lamb, D. Ojima, P. Z. Ellsworth, L. S. L. Sternberg, S. Zhong, C. Clements, J. P. Moore, D. E. Anderson, A. S. Watts, J. Hu, M. Tschudi, S. Aulenbach, E. Allwine, T. Coons, 2010: A multi-scale and multi-disciplinary investigation of ecosystem-atmosphere CO2 exchange over mountains. Bull. Amer. Meteorol., 91(2), 209-230. pdf

Oncley, S. P., K. Schwenz, S. P. Burns, J. Sun, R. K. Monson, 2009: A cable-borne platform for atmospheric measurements along transects (TRAM). J. Atmos. Oceanic Tech., 26, 462-473. pdf

Burns, S. P. A. C. Delany, J. Sun, B. B. Stephens, S. P. Oncley, G. D. Maclean, S. R. Semmer, J. Schroter, and J. Ruppert, 2009: Evaluation of calibration techniques for in-situ carbon dioxide measurements using a programmable portable trace-gas measuring system. J. Atmos. Oceanic Tech., 26, 291-316. pdf

Schaeffer, S. M., D. E. Anderson, S. P. Burns, R. K. Monson, J. Sun, D. R. Bowling, 2008: Canopy structure and atmospheric flows in relation to the δ13C of respired CO2 in a subaline coniferous forest. Agric. Forest Meteorol., 148, 592-605. pdf

Sun, J., 2007: Tilt corrections over complex terrain and its implication for CO2 transport. Boundary-Layer Meteorol., 124, 143-159. pdf

Edson, J., T. Crawford, J. Crescenti, T. Farrar, N. Frew, G. Gerbi, C. Helmis, T. Hristov, D. Khelif, A. Jessup, H. Jonsson, M. Li, L. Mahrt, W. McGillis, A. Plueddemann, L. Shen, E. Skyllingstad, T. Stanton, P. Sullivan, J. Sun, H. Trowbridge, D. Vickers, S. Wang, Q. Wang, R. Weller, J. Wilkin, D. Yu, and C. Zappa, 2007: The Coupled Boundary Layers and Air-Sea Transfer Experiment in Low Winds (CBLAST-LOW). Bull. Amer. Meteor. Soc., 88, 341-356. pdf

Lenschow, D. H., and J. Sun, 2007: The spectral composition of fluxes and variances over land and sea out to the mesoscale. Boundary-Layer Meteorol., 125, 63-84. pdf

Banta, R. M., L. Mahrt, D. Vickers, J. Sun, B. B. Balsley, Y. Pichugina, and E. J. Williams, 2007: The very stable boundary layer on nights with weak low-level jets. J. Atmos. Sci., 64, 3068-3090. pdf

Sun, J., S. P. Burns, A. C. Delany, S. P. Oncley, A. A. Turnipseed, B. B. Stephens, D. H. Lenschow, M. A. LeMone, R. K. Monson, D. E. Anderson, 2007: CO2 transport over complex terrain, Agricultural and Forest Meteorology, 145, 1-21. pdf

Barth, M., J.P. McFadden, J. Sun, C. Wiedinmyer, P. Chuang, D. Collins, R. Griffin, M. Hanningan, T. Karl, S.-W. Kim, S. Lasher-Trapp, S. Levis, M. Litvak, N. Mahowald, K. Moore, S. Nandi, E. Nemitz, A. Nenes, M. Potosnak, T. Raymond, J. Smith, C. Still, C. Stroud, 2005: Coupling between land ecosystems and the atmospheric hydrologic cycle through biogenic aerosol pathways, Bull. Amer. Meteor. Soc., 86(12), 1738-1742. pdf

Wang, Y.-C., J. Li, F. Chen, D. H. Lenschow, J. Sun, D. Niyogi, K. Lau, W. Jiang, X. Deng, D. Wu, 2005: Challenge and opportunities in urban meteorology research and forecast. Bulletin of National Natural Science Foundation, 13 (1), 23-30. pdf

Sun, J., S. P. Burns, D. Vandermark, M. A. Donelan, L., Mahrt, T. L. Crawford, G. H. Crescenti, and J. R. French, 2005: Measurement of directional wave spectra using aircraft laser altimeters. J. Atmos. Oceanic Tech., 22(7), 869-885. pdf

Vandemark, D., B. Chapron, J. Sun, G. H. Crescenti, and H. Graber, 2004: Ocean wave slope observations using radar backscatter and laser altimeters. J. Phys. Oceanog., 34, 2825-2842. pdf

Sun, J., D. H. Lenschow, S.P. Burns, R.M. Banta, R.K. Newsom, R. Coulter, S. Frasier, T. Ince, C. Nappo, B. Balsley, M. Jensen, L. Mahrt, D. Miller, and B. Skelly, 2004: Atmospheric disturbances that generate intermittent turbulence in nocturnal boundary layers. Boundary-Layer Meteorol., 110, 255-279. pdf

Sun, J., S. P. Burns, A.C. Delany, T. Horst, S. Oncley, and D. H. Lenschow, 2003: Heat balance in nocturnal boundary layers. J. Appl. Meteor., 42(11), 1649-1666. pdf

Burns, S.P., J. Sun, A. C. Delany, S.R. Semmer, S.P. Oncley, and T.W. Horst, 2003: A field intercomparison technique to improve the relative accuracy of longwave radiation measurements and an evaluation of CASES-99 pyrgeometer data quality. J. Atmos. Oceanic Tech., 20, 348-361. pdf

Poulos, G.S., W. Blumen, D.C. Fritts, J.K. Lundquist, J. Sun, S. P. Burns, C. Nappo, R. Banta, R. Newsom, J. Cuxart, E. Terradellas, B. Balsley, and M. Jensen, 2002: CASES-99 A comprehensive investigation of the stable nocturnal boundary layer. Bull. Amer. Meteor. Soc., 83(4), 555-581. pdf

Sun, J., S. P. Burns, D. H. Lenschow, R. Banta, R. Newsom, R. Coulter, S. Frasier,T. Ince, C. Nappo, J. Cuxart, W. Blumen, X. Lee, and X.-Z. Hu, 2002: Intermittent turbulence associated with a density current passage in the stable boundary layer. Boundary-Layer Meteorol., 105(2), 199-219. pdf

Mahrt, L., D. Vickers, J. Sun, N.O. Jensen, H. Jorgensen, E. Pardyjak, and H. Fernando, 2001: Determination of the surface drag coefficient. Boundary-Layer Meteorol., 99, 249-276. pdf

Vandemark, D., P.D. Mourad, T.L. Crawford, C.A. Vogel, J. Sun, S.A. Bailey, and B. Chapron, 2001: Measured changes in ocean surface roughness due to atmospheric boundary layer rolls. J. Geophys. Res., 106, 4639-4654. pdf

Vickers, D., L. Mahrt, J. Sun, and T. Crawford, 2001: Structure of off-shore flow. Mon. Wea. Rev., 129, 1251-1258. pdf

Mahrt, L., D. Vickers, J. Sun, J. Harry McCaughey, 2001: Calculation of area-averaged fluxes: Application to BOREAS. J. Appl. Meteor., 40, 915-920. pdf

Mahrt, L., D. Vickers, R. Nakamura, M.R. Soler, J. Sun, and S. Burns, L. Lenschow, 2001: Shallow drainage flow. Boundary-Layer Meteorol., 101, 243-260. pdf

Blumen, W., R. Banta, S.P. Burns, D.C. Fritts, R. Newsom, G.S. Poulos, and J. Sun, 2001: Turbulence statistics of a Kelvin-Helmholtz billow event observed in the night-time boundary layer during the Cooperative Atmosphere-Surface Exchange Study field program. Dyn. Atmos. Oceans, 34, 189-204. pdf

Mahrt, L., D. Vickers, J. Sun, 2001: Spatial variations of surface moisture flux from aircraft data. Advances in Water Resources, 24, 1133-1141. pdf

Sun, J., D. Vandemark, L. Mahrt, D. Vicker, T. Crawford, C. Vogel, 2001: Momentum transfer over the coastal zone. J. Geophys. Res., 106, 12,437-12,448. pdf

Mahrt, L., D. Vickers, J. Sun, T. Crawford, G. Crescenti, and P. Frederickson, 2001: Surface stress in offshore flow and quasi-frictional decoupling. J. Geophys. Res., 106, 20,629-20,639. pdf

Howell, J. and J. Sun, 1999: Surface layer fluxes in stable conditions. Boundary-Layer Meteorol., 90, 495-520. pdf

Sun, J., and W. Massman, 1999: Ozone transport in California Ozone Deposition Experiment. J. Geophys. Res., 104, 11,939-11,948. pdf

Sun, J., W. Massman, and D. Grantz, 1999: Aerodynamic variables in the bulk formula. Boundary-Layer Meteorol., 91, 109-125. pdf

Sun, J. 1999: Diurnal variations of thermal roughness height over a grassland. Boundary-Layer Meteorol., 92, 407-427. pdf

Sun, J., R. Dejardins, L. Mahrt, and I. MacPherson, 1998: Transport of carbon dioxide, water vapor, and ozone by turbulence and local circulations. J. Geophys. Res., 103, 25,873-25,885. pdf

Mahrt L., D. Vickers, J. Edson, J. Sun, J. Hojstrup, J. Hare, and J.M. Wilczak, 1998: Heat flux in coastal zone. Boundary-Layer Meteorol., 86, 421-446. pdf

Mahrt,L., Sun, J., W. Blumen, T. Delany, and S. Oncley, 1998: Nocturnal boundary layer regimes. Boundary-Layer Meteorol., 88, 255-278. pdf

Mahrt, L., K. Kotwica, J. Sun, J.I. MacPherson, and R.L. Desjardins, 1998: Estimation of area averaged moisture flux. Quart. J. Roy. Met. Soc., 124(552), 2793-2815. pdf

Sun, J., D. H. Lenschow, L. Mahrt, T. L. Crawford, K. J. Davis, S. P. Oncley, J. I. MacPherson, Q. Wang, R. J. Dobosy, and R. L. Desjardins, 1997: Lake-induced atmospheric circulations during BOREAS. J. Geophys. Res., 102, 29155-29166. pdf

Mahrt, L., J. Sun, J. I. MacPherson, N. O. Jensen, and R. L. Desjardins, 1997: Formulation of the surface temperature for prediction of heat flux: Application to BOREAS. J. Geophys. Res., 102, 29,641-29,649. pdf

Sun, J., J. F. Howell, S. K. Esbensen, L. Mahrt, C. M. Greb, R. Grossman, M. A. LeMone, 1996: Scale dependence of air-sea Fluxes over the western equatorial pacific. J. Atmos. Soc., 53, 2997-3012. pdf

Sun, J., and L. Mahrt, 1995: Determination of surface fluxes from the surface radiative temperature. J. Atmos. Soc., 52, 1096-1106. pdf

Mahrt, L., and J. Sun, 1995: The subgrid velocity scale in the bulk aerodynamic relationship for spatially averaged scalar fluxes. Mon. Wea. Rev., 123, 3032-3041. pdf

Sun, J., S. K. Esbensen, and L. Mahrt, 1995: Estimation of surface heat flux. J. Atmos. Soc., 52, 3162-3171. pdf

Mahrt, L., and J. Sun, 1995: Dependence of exchange coefficients on averaging scale or grid size. Quart. J. Roy. Met. Soc., 121 (528), 1835-1852. pdf

Mahrt, L., D. H. Lenschow, J. Sun, J. C. Weil, J. I. MacPherson, and R. Desjardins,1995: Ozone fluxes over a patchy cultivated surface. J. Geophys. Res., 100, 23,125-23,131. pdf

Sun, J., and L. Mahrt, 1995: Relationship of the heat flux to microscale temperature variations: Application to BOREAS. Boundary-Layer Meteorol., 76, 291-301. pdf

Mahrt, L., J. Sun, D. Vickers, J. I. MacPherson, J. R. Pederson, R. L. Desjardins, 1994: Observations of fluxes and inland breezes over a heterogeneous surface. J. Atmos. Soc., 51, 2484-2499. pdf

Sun, J., and L. Mahrt, 1994: Spatial distribution of surface fluxes estimated from remotely sensed variables. J. Appl. Meteor., 33, 1341-1353. pdf

Esbensen, S. K., D. B. Chelton, D. Vickers and J. Sun, 1992: An analysis of errors in SSM/I evaporation estimates over the global oceans. J. Geophys. Res., 98, 7081-7101. pdf

Sun, J., 1993: Effects of vertical distribution of water vapor and temperature on precipitable water retrieval errors. J. Geophys. Res., 98, 7069-7079. pdf

Smith, R., and J. Sun, 1987: Generalized hydraulic solutions pertaining to severe downslope winds. J. Atmos. Soc.,44, 2934-2939. pdf

Chen, Q., and J. Sun, 1987: Physical Processes for maintaining the meridional and zonal circulation in midlatitude atmosphere, Part 1. Scien. Atmos. Sinica, 11, 189-213.

Chen, Q., and J. Sun, 1987: Physical processes for maintenance of the mean meridional and zonal circulation of the atmosphere in the middle latitudes, Part 2. Scientia Atmospherica Sinica, 11(3), 237-246.


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