| contributor author | Kleist, Daryl T. | |
| contributor author | Parrish, David F. | |
| contributor author | Derber, John C. | |
| contributor author | Treadon, Russ | |
| contributor author | Errico, Ronald M. | |
| contributor author | Yang, Runhua | |
| date accessioned | 2017-06-09T16:26:37Z | |
| date available | 2017-06-09T16:26:37Z | |
| date copyright | 2009/03/01 | |
| date issued | 2009 | |
| identifier issn | 0027-0644 | |
| identifier other | ams-67966.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4209471 | |
| description abstract | The gridpoint statistical interpolation (GSI) analysis system is a unified global/regional three-dimensional variational data assimilation (3DVAR) analysis code that has been under development for several years at the National Centers for Environmental Prediction (NCEP)/Environmental Modeling Center. It has recently been implemented into operations at NCEP in both the global and North American data assimilation systems (GDAS and NDAS, respectively). An important aspect of this development has been improving the balance of the analysis produced by GSI. The improved balance between variables has been achieved through the inclusion of a tangent-linear normal-mode constraint (TLNMC). The TLNMC method has proven to be very robust and effective. The TLNMC as part of the global GSI system has resulted in substantial improvement in data assimilation at NCEP. | |
| publisher | American Meteorological Society | |
| title | Improving Incremental Balance in the GSI 3DVAR Analysis System | |
| type | Journal Paper | |
| journal volume | 137 | |
| journal issue | 3 | |
| journal title | Monthly Weather Review | |
| identifier doi | 10.1175/2008MWR2623.1 | |
| journal fristpage | 1046 | |
| journal lastpage | 1060 | |
| tree | Monthly Weather Review:;2009:;volume( 137 ):;issue: 003 | |
| contenttype | Fulltext | |
