Mean Surface Heat Flux (Wm-2)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| SWnet | 0.0 | -0.9 | -7.2 | -24.0 | -43.3 | -73.4 | -94.3 | -35.7 | -6.9 | na | 0.0 | 0.0 |
| LWnet | 25.2 | 32.9 | 16.2 | 23.1 | 27.9 | 28.5 | 15.1 | 11.2 | 11.5 | na | 17.5 | 33.2 |
| SHF | -5.2 | -8.0 | -2.8 | -0.9 | 1.6 | 0.3 | -2.4 | 2.0 | 0.2 | na | -2.8 | -5.7 |
| LHF | -0.8 | -0.5 | -0.6 | -0.7 | 0.7 | 0.7 | -0.4 | 1.8 | -0.5 | na | -0.9 | -0.5 |
| Total | 17.9 | 21.5 | 5.7 | -1.3 | -12.5 | -44.0 | 85.4 | -20.3 | 4.1 | na | 14.0 | 26.4 |
All values are positive upward. Fluxes shown are net shortwave radiation (SWnet), net longwave radiation (LWnet), sensible heat flux (SHF), latent heat flux (LHF), and total heaf (Total).
All good data for each component are included; the total fluxes are based on periods when all components were available, therefore the sums of the components are not exactly equal to the total flux.
The data represent means of hourly-averaged measurements from the main flux tower. The tower had 5 levels. The data used for each hour was the median value of the 5 levels. This table represents preliminary data. Latent heat fluxes are based on a bulk method. Actual latent heat values will soon be available. Consult the SHEBA Surface Flux Group before using this data for anything.
| The National Science Foundation supported the construction of this web page and the results presented here with grants to the U.S. Army Cold Regions Research and Engineering laboratory, NOAA's Environmental Technology Laboratory, and the Naval Postgraduate School. We would like to thank the many persons who braved the harsh Arctic environment for our project , the supporting personnel at ETL and CRREL, and the SHEBA project office logistics crew. We also thank the crew of the Des Grosielliers for their supreme professionalism and hospitality. |
This is a U. S. Government Computer System.
Last update: 9/22/99
Please send all comments and suggestions to the author, Peter Guest,