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Author
Bhardwaj, A. ; Misra, V.
Title
The role of air-sea coupling in the downscaled hydroclimate projection over Peninsular Florida and the West Florida Shelf
Type
$loc['typeJournal Article']
Year
2019
Publication
Climate Dynamics
Abbreviated Journal
Clim Dyn
Volume
53
Issue
5-6
Pages
2931-2947
Keywords
Abstract
A comparative analysis of two sets of downscaled simulations of the current climate and the future climate projections over Peninsular Florida (PF) and the West Florida Shelf (WFS) is presented to isolate the role of high-resolution air-sea coupling. In addition, the downscaled integrations are also compared with the much coarser, driving global model projection to examine the impact of grid resolution of the models. The WFS region is habitat for significant marine resources, which has both commercial and recreational value. Additionally, the hydroclimatic features of the WFS and PF contrast each other. For example, the seasonal cycle of surface evaporation in these two regions are opposite in phase to one another. In this study, we downscale the Community Climate System Model version 4 (CCSM4) simulations of the late twentieth century and the mid-twenty-first century (with reference concentration pathway 8.5 emission scenario) using an atmosphere only Regional Spectral Model (RSM) at 10 km grid resolution. In another set, we downscale the same set of CCSM4 simulations using the coupled RSM-Regional Ocean Model System (RSMROMS) at 10 km grid resolution. The comparison of the twentieth century simulations suggest significant changes to the SST simulation over WFS from RSMROMS relative to CCSM4, with the former reducing the systematic errors of the seasonal mean SST over all seasons except in the boreal summer season. It may be noted that owing to the coarse resolution of CCSM4, the comparatively shallow bathymetry of the WFS and the sharp coastline along PF is poorly defined, which is significantly rectified at 10 km grid spacing in RSMROMS. The seasonal hydroclimate over PF and the WFS in the twentieth century simulation show significant bias in all three models with CCSM4 showing the least for a majority of the seasons, except in the wet June-July-August (JJA) season. In the JJA season, the errors of the surface hydroclimate over PF is the least in RSMROMS. The systematic errors of surface precipitation and evaporation are more comparable between the simulations of CCSM4 and RSMROMS, while they differ the most in moisture flux convergence. However, there is considerable improvement in RSMROMS compared to RSM simulations in terms of the seasonal bias of the hydroclimate over WFS and PF in all seasons of the year. This suggests the potential rectification impact of air-sea coupling on dynamic downscaling of CCSM4 twentieth century simulations. In terms of the climate projection in the decades of 2041-2060, the RSMROMS simulation indicate significant drying of the wet season over PF compared to moderate drying in CCSM4 and insignificant changes in the RSM projection. This contrasting projection is also associated with projected warming of SSTs along the WFS in RSMROMS as opposed to warming patterns of SST that is more zonal and across the WFS in CCSM4.
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0930-7575
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ user @
Serial
1082
Permanent link to this record
Author
Bhardwaj, A. ; Misra, V. ; Mishra, A. ; Wootten, A. ; Boyles, R. ; Bowden, J. H. ; Terando, A. J.
Title
Downscaling future climate change projections over Puerto Rico using a non-hydrostatic atmospheric model
Type
$loc['typeJournal Article']
Year
2018
Publication
Climatic Change
Abbreviated Journal
Volume
147
Issue
1-2
Pages
133-147
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
550
Permanent link to this record
Author
Boisserie, M
Title
Generation of an empirical soil moisture initialization and its potential impact on subseasonal forecasting skill of continental precipitation and air temperature
Type
$loc['typeManuscript']
Year
2010
Publication
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
The effect of the PAR technique on the model soil moisture estimates is evaluated using the Global Soil Wetness Project Phase 2 (GSWP-2) multimodel analysis product (used as a proxy for global soil moisture observations) and actual in-situ observations from the state of Illinois. The results show that overall the PAR technique is effective; across most of the globe, the seasonal and anomaly variability of the model soil moisture estimates well reproduce the values of GSWP-2 in the top 1.5 m soil layer; by comparing to in-situ observations in Illinois, we find that the seasonal and anomaly soil moisture variability is also well represented deep into the soil. Therefore, in this study, we produce a new global soil moisture analysis dataset that can be used for many land surface studies (crop modeling, water resource management, soil erosion, etc.). Then, the contribution of the resulting soil moisture analysis (used as initial conditions) on air temperature and precipitation forecasts are investigated. For this, we follow the experimental set up of a model intercomparison study over the time period 1986-1995, the Global Land-Atmosphere Coupling Experiment second phase (GLACE-2), in which the FSU/COAPS climate model has participated. The results of the summertime air temperature forecasts show a significant increase in skill across most of the U.S. at short-term to subseasonal time scales. No increase in summertime precipitation forecasting skill is found at short-term to subseasonal time scales between 1986 and 1995, except for the anomalous drought year of 1988. We also analyze the forecasts of two extreme hydrological events, the 1988 U.S. Drought and the 1993 U.S. flood. In general, the comparison of these two extreme hydrological event forecasts shows greater improvement for the summertime of 1988 than that of 1993, suggesting that soil moisture contributes more to the development of a drought than a flood. This result is consistent with Dirmeyer and Brubaker [1999] and Weaver et al. [2009]. By analyzing the evaporative sources of these two extreme events using the back-trajectory methodology of Dirmeyer and Brubaker [1999], we find similar results as this latter paper; the soil moisture-precipitation feedback mechanism seems to play a greater role during the drought year of 1988 than the flood year of 1993. Finally, the accuracy of this soil moisture initialization depends upon the quality of the precipitation dataset that is assimilated. Because of the lack of observed precipitation at a high temporal resolution (3-hourly) for the study period (1986-1995), a reanalysis product is used for precipitation assimilation in this study. It is important to keep in mind that precipitation data in reanalysis sometimes differ significantly from observations since precipitation is often not assimilated into the reanalysis model. In order to investigate that aspect, a similar analysis to that we performed in this study could be done using the 3-hourly Tropical Rainfall Measuring Mission (TRMM) dataset available for a the time period 1998-present. Then, since the TRMM dataset is a fully observational dataset, we expect the soil moisture initialization to be improved over that obtained in this study, which, in turn, may further increase the forecast skill.
Address
Department of Meteorology
Corporate Author
Thesis
$loc['Ph.D. thesis']
Publisher
Florida State University
Place of Publication
Tallahassee, FL, FL
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Series Editor
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Series Issue
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ISSN
ISBN
Medium
Area
Expedition
Conference
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Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
569
Permanent link to this record
Author
Boisserie, M. ; LaRow, T. ; Cocke, S. D. ; Shin, D. W.
Title
Comparison of Soil Moisture in the FSU Climate Model Coupled to a Land Model CLM2 to Soil Moisture from NCEP/DOE Reanalysis 2
Type
$loc['typeReport']
Year
2005
Publication
Abbreviated Journal
Volume
Issue
Pages
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Research Activities in Atmospheric and Ocean Modeling, CAS/JSC Working Group on Numerical Experimentation
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
905
Permanent link to this record
Author
Boisserie, M. ; Shin, D.W. ; LaRow, T.E. ; Cocke, S.
Title
Evaluation of soil moisture in the Florida State University climate model-National Center for Atmospheric Research community land model (FSU-CLM) using two reanalyses (R2 and ERA40) and in situ observations
Type
$loc['typeJournal Article']
Year
2006
Publication
Journal of Geophysical Research
Abbreviated Journal
J. Geophys. Res.
Volume
111
Issue
D8
Pages
Keywords
land surface models ; soil moisture ; freezing process
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0148-0227
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
709
Permanent link to this record
Author
Bourassa, M. ; Gille, S. ; Jackson, D. ; Roberts, J.B. ; Wick, G.
Title
Ocean Winds and Turbulent Air-Sea Fluxes Inferred From Remote Sensing
Type
$loc['typeJournal Article']
Year
2010
Publication
Oceanography
Abbreviated Journal
Oceanog.
Volume
23
Issue
4
Pages
36-51
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1042-8275
ISBN
Medium
Area
Expedition
Conference
Funding
NASA, OVWST, NOAA, OCO
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
366
Permanent link to this record
Author
Bourassa, M. A.
Title
Tehuantepec wind and pressure changes associated with tropical cyclones
Type
$loc['typeConference Article']
Year
2001
Publication
11th Conference on Interactions of the Sea and Atmosphere, Amer. Meteor. Soc., San Diego, CA, USA
Abbreviated Journal
Volume
Issue
Pages
27-28
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
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Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
NASA, SEAWINDS, OVWST
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
815
Permanent link to this record
Author
Bourassa, M. A.
Title
A Sea Surface Stress Parameterization Dependent on Directional Seastate
Type
$loc['typeConference Article']
Year
2004
Publication
CAS/JSC Working Group on Numerical Experimentation, Research Activities in Atmospheric and Oceanic Modeling
Abbreviated Journal
Volume
Issue
Pages
4.07-4.08
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
World Meteorological Organization
Place of Publication
Geneva, Switzerland
Editor
Language
Summary Language
Original Title
Series Editor
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Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
FYAP, NASA, OSU, ONR, NSF, OVWST
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
884
Permanent link to this record
Author
Bourassa, M. A.
Title
Satellite-based observations of surface turbulent stress during severe weather
Type
$loc['typeJournal Article']
Year
2006
Publication
Atmosphere-Ocean Interactions
Abbreviated Journal
Volume
2
Issue
Pages
35-52
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Wessex Institute of Technology
Place of Publication
Editor
Perrie, W.
Language
Summary Language
Original Title
Series Editor
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Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
FYAP, NASA, NOAA, NSF
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
914
Permanent link to this record
Author
Bourassa, M. A.
Title
The future of wind measurements from space
Type
$loc['typeMagazine Article']
Year
2009
Publication
Space News
Abbreviated Journal
Volume
Issue
Nov. 23
Pages
2
Keywords
Abstract
Address
Corporate Author
Thesis
Publisher
Place of Publication
Editor
Language
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
ISBN
Medium
Area
Expedition
Conference
Funding
Approved
$loc['no']
Call Number
COAPS @ mfield @
Serial
672
Permanent link to this record