Evaluation and adaptation of a regional climate model for the Horn of Africa: rainfall climatology and interannual variability

2009 ◽  
Vol 29 (1) ◽  
pp. 47-65 ◽  
Author(s):  
Zewdu T. Segele ◽  
Lance M. Leslie ◽  
Peter J. Lamb
Keyword(s):  
Regional Climate Model ◽  
Interannual Variability ◽  
Climate Model ◽  
Regional Climate ◽  
Horn Of Africa ◽  
Rainfall Climatology

scholarly journals Improving Climate Sensitivity of Deep Lakes within a Regional Climate Model and Its Impact on Simulated Climate

2014 ◽  
Vol 27 (8) ◽  
pp. 2886-2911 ◽  
Author(s):  
Val Bennington ◽  
Michael Notaro ◽  
Kathleen D. Holman
Keyword(s):  
Regional Climate Model ◽  
Interannual Variability ◽  
Climate Models ◽  
Climate Model ◽  
Regional Climate ◽  
Global Climate Models ◽  
Deep Lakes ◽  
Community Land Model ◽  
Lake Model ◽  
Lake Temperature

Abstract Regional climate models aim to improve local climate simulations by resolving topography, vegetation, and land use at a finer resolution than global climate models. Lakes, particularly large and deep lakes, are local features that significantly alter regional climate. The Hostetler lake model, a version of which is currently used in the Community Land Model, performs poorly in deep lakes when coupled to the regional climate of the International Centre for Theoretical Physics (ICTP) Regional Climate Model, version 4 (RegCM4). Within the default RegCM4 model, the lake fails to properly stratify, stifling the model’s ability to capture interannual variability in lake temperature and ice cover. Here, the authors improve modeled lake stratification and eddy diffusivity while correcting errors in the ice model. The resulting simulated lake shows improved stratification and interannual variability in lake ice and temperature. The lack of circulation and explicit mixing continues to stifle the model’s ability to simulate lake mixing events and variability in timing of stratification and destratification. The changes to modeled lake conditions alter seasonal means in sea level pressure, temperature, and low-level winds in the entire model domain, highlighting the importance of lake model selection and improvement for coupled simulations. Interestingly, changes to winter and spring snow cover and albedo impact spring warming. Unsurprisingly, regional climate variability is not significantly altered by an increase in lake temperature variability.

scholarly journals Application of the NCAR Regional Climate Model to eastern Africa: 2. Simulation of interannual variability of short rains

1999 ◽  
Vol 104 (D6) ◽  
pp. 6549-6562 ◽  
Author(s):  
Liqiang Sun ◽  
Fredrick H. M. Semazzi ◽  
Filippo Giorgi ◽  
Laban Ogallo
Keyword(s):  
Regional Climate Model ◽  
Interannual Variability ◽  
Climate Model ◽  
Regional Climate ◽  
Eastern Africa ◽  
Short Rains

scholarly journals Brief Communication: Upper air relaxation in RACMO2 significantly improves modelled interannual SMB variability in Antarctica

2015 ◽  
Vol 9 (5) ◽  
pp. 4981-4995
Author(s):  
W. J. van de Berg ◽  
B. Medley
Keyword(s):  
Regional Climate Model ◽  
Interannual Variability ◽  
Antarctic Peninsula ◽  
Climate Model ◽  
Regional Climate ◽  
Ice Sheet ◽  
West Antarctica ◽  
Steep Topography ◽  
The Antarctic

Abstract. The regional climate model RACMO2 has been a powerful tool for improving SMB estimates from GCMs or reanalyses. However, new yearly SMB observations for West Antarctica show that the modelled interannual variability in SMB is poorly simulated by RACMO2, in contrast to ERA-Interim, which resolves this variability well. In an attempt to remedy RACMO2 performance, we included additional upper air relaxation (UAR) in RACMO2. With UAR, the correlation to observations is similar for RACMO2 and ERA-Interim. The spatial SMB patterns and ice sheet integrated SMB modelled using UAR remain very similar to the estimates of RACMO2 without UAR. We only observe an upstream smoothing of precipitation in regions with very steep topography like the Antarctic Peninsula. We conclude that UAR is a useful improvement for RCM simulations, although results in regions with steep topography should be treated with care.

Analyses of the warm season rainfall climatology of the northeastern US using regional climate model simulations and radar rainfall fields

2011 ◽  
Vol 34 (2) ◽  
pp. 184-204 ◽  
Author(s):  
June K. Yeung ◽  
James A. Smith ◽  
Gabriele Villarini ◽  
Alexandros A. Ntelekos ◽  
Mary Lynn Baeck ◽  
...  
Keyword(s):  
Regional Climate Model ◽  
Climate Model ◽  
Regional Climate ◽  
Warm Season ◽  
Radar Rainfall ◽  
Model Simulations ◽  
Climate Model Simulations ◽  
Rainfall Climatology

scholarly journals Validation of the WRF regional climate model over the subregions of Southeast Asia: climatology and interannual variability

2017 ◽  
Vol 71 (3) ◽  
pp. 263-280 ◽  
Author(s):  
SB Ratna ◽  
JV Ratnam ◽  
SK Behera ◽  
FT Tangang ◽  
T Yamagata
Keyword(s):  
Southeast Asia ◽  
Regional Climate Model ◽  
Interannual Variability ◽  
Climate Model ◽  
Regional Climate

Qinghai-Xizang (Tibetan) Plateau climate simulation using the regional climate model RegCM3

2013 ◽  
Vol 57 (3) ◽  
pp. 173-186 ◽  
Author(s):  
X Wang ◽  
M Yang ◽  
G Wan ◽  
X Chen ◽  
G Pang
Keyword(s):  
Tibetan Plateau ◽  
Regional Climate Model ◽  
Climate Model ◽  
Regional Climate ◽  
Climate Simulation
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