Records |
Author |
Meyers, SD; O'Brien, JJ |
Title |
Historical reconstruction of the 1868-1993 ENSO cycle using EOF climate basis functions |
Type |
$loc['typeConference Article'] |
Year |
1998 |
Publication |
9th Conference on Interaction of the Sea and Atmosphere at the 78th American-Meteorogical-Society Annual Meeting |
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Volume |
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Issue |
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Pages |
203-233 |
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Conference |
9th Conference on Interaction of the Sea and Atmosphere at the 78th American-Meteorogical-Society Annual Meeting |
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Approved |
$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
542 |
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Author |
Michael, J-P |
Title |
ENSO Fidelity in Two Coupled Models |
Type |
$loc['typeManuscript'] |
Year |
2010 |
Publication |
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Issue |
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Pages |
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Keywords |
General Circulation Model, El Nino, Coupled Model, Climate Model, ENSO |
Abstract |
This study examines the fidelity of the ENSO simulation in two coupled model integrations and compares this with available global ocean data assimilation. The two models are CAM-HYCOM coupled model developed by the HYCOM Consortium and CCSM3.0. The difference between the two climate models is in the use of different ocean general circulation model (OGCM). The hybrid isopycnal-sigma-pressure coordinate ocean model Hybrid Coordinate Ocean Model (HYCOM) replaces the ocean model Parallel Ocean Program (POP) of the CCSM3.0. In both, the atmospheric general circulation model (AGCM) Community Atmosphere Model (CAM) is used. In this way the coupled systems are compared in a controlled setting so that the effects of the OGCM may be obtained. Henceforth the two models will be referred to as CAM-HYCOM and CAM-POP respectively. Comparison of 200 years of model output is used discarding the first 100 years to account for spin-up issues. Both models (CAM-HYCOM and CAM-POP) are compared to observational data for duration, intensity, and global impacts of ENSO. Based on the analysis of equatorial SST, thermocline depth, wind stress and precipitation, ENSO in the CAM-HYCOM model is weaker and farther east than observations while CAM-POP is zonal and extends west of the international dateline. CAM-POP also has an erroneous biennial cycle of the equatorial pacific SSTs. The analysis of the subsurface ocean advective terms highlights the problems of the model simulations. |
Address |
Department of Earth Ocean and Atmospheric Science |
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Thesis |
$loc['Master's thesis'] |
Publisher |
Florida State University |
Place of Publication |
Tallahassee, FL |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
576 |
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Author |
Miller, S. K. |
Title |
Variability of surface wind convergence estimated from ERS-1/2 Scatterometer winds over the Indian Ocean |
Type |
$loc['typeManuscript'] |
Year |
1998 |
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Department of Meteorology |
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Thesis |
$loc['Master's thesis'] |
Publisher |
Florida State University |
Place of Publication |
Tallahassee, FL |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
643 |
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Author |
Misra, V. |
Title |
Harvesting model uncertainty for the simulation of interannual variability |
Type |
$loc['typeJournal Article'] |
Year |
2009 |
Publication |
Journal of Geophysical Research |
Abbreviated Journal |
J. Geophys. Res. |
Volume |
114 |
Issue |
D16 |
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ISSN |
0148-0227 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
385 |
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Author |
Misra, V. |
Title |
The Amplification of the ENSO Forcing over Equatorial Amazon |
Type |
$loc['typeJournal Article'] |
Year |
2009 |
Publication |
Journal of Hydrometeorology |
Abbreviated Journal |
J. Hydrometeor |
Volume |
10 |
Issue |
6 |
Pages |
1561-1568 |
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ISSN |
1525-755X |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
380 |
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Author |
Misra, V. |
Title |
Coupled Air, Sea, and Land Interactions of the South American Monsoon |
Type |
$loc['typeJournal Article'] |
Year |
2008 |
Publication |
Journal of Climate |
Abbreviated Journal |
J. Climate |
Volume |
21 |
Issue |
23 |
Pages |
6389-6403 |
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ISSN |
0894-8755 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
404 |
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Author |
Misra, V.; Bhardwaj, A. |
Title |
The impact of varying seasonal lengths of the rainy seasons of India on its teleconnections with tropical sea surface temperatures |
Type |
$loc['typeJournal Article'] |
Year |
2020 |
Publication |
Atmospheric Science Letters |
Abbreviated Journal |
Atmos Sci Lett |
Volume |
21 |
Issue |
3 |
Pages |
9658-9689 |
Keywords |
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Abstract |
We present in this paper the interannual variability of seasonal temperature and rainfall in the Indian meteorological subdivisions (IMS) for boreal winter and summer seasons that take in to account the varying length of the seasons. Our study reveals that accounting for the variations in the length of the seasons produces stronger teleconnections between the seasonal anomalies of surface temperature and rainfall over India with corresponding sea surface temperature anomalies of the tropical Oceans (especially over the northern Indian and the equatorial Pacific Oceans) compared to the same teleconnections from fixed length seasons over the IMS. It should be noted that the IMS show significant spatial heterogeneity in these teleconnections. |
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Edition |
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ISSN |
1530-261X |
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$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
1100 |
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Author |
Misra, V.; Bhardwaj, A. |
Title |
Understanding the seasonal variations of Peninsular Florida |
Type |
$loc['typeJournal Article'] |
Year |
2019 |
Publication |
Climate Dynamics |
Abbreviated Journal |
Clim Dyn |
Volume |
54 |
Issue |
3-4 |
Pages |
1873-1885 |
Keywords |
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Abstract |
This study accounts for varying lengths of the seasons, which turns out to be an important consideration of climate variability over Peninsular Florida (PF). We introduce an objective definition for the onset and demise of the winter season over relatively homogenous regions within PF: North Florida (NF), Central Florida (CF), Southeast Florida (SeF), and Southwest Florida (SwF). We first define the summer season based on precipitation, and follow this by defining the winter season using surface temperature analysis. As a consequence, of these definitions of the summer and the winter seasons, the lengths of the transition seasons of spring and fall also vary from year to year. The onset date variations have a robust relationship with the corresponding seasonal length anomalies across PF for all seasons. Furthermore, with some exceptions, the onset date variations are associated with corresponding seasonal rainfall and surface temperature anomalies, which makes monitoring the onset date of the seasons a potentially useful predictor of the following evolution of the season. In many of these instances the demise date variations of the season also have a bearing on the preceding seasonal length and seasonal rainfall anomalies. However, we find that variations of the onset and the demise dates are independent of each other across PF and in all seasons. We also find that the iconic ENSO teleconnection over PF is exclusive to the seasonal rainfall anomalies and it does not affect the variations in the length of the winter season. Given these findings, we strongly suggest monitoring and predicting the variations in the lengths of the seasons over PF as it is not only an important metric of climate variability but also beneficial to reduce a variety of risks of impact of anomalous seasonal climate variations. |
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Edition |
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ISSN |
0930-7575 |
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Approved |
$loc['no'] |
Call Number |
COAPS @ user @ |
Serial |
1098 |
Permanent link to this record |
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Author |
Misra, V.; Bhardwaj, A. |
Title |
Defining the Northeast Monsoon of India |
Type |
$loc['typeJournal Article'] |
Year |
2019 |
Publication |
Monthly Weather Review |
Abbreviated Journal |
Mon. Wea. Rev. |
Volume |
147 |
Issue |
3 |
Pages |
791-807 |
Keywords |
Indian Summer Monsoon, intraseasonal,Climate models, variability, NEM, rainfall |
Abstract |
This study introduces an objective definition for onset and demise of the Northeast Indian Monsoon (NEM). The definition is based on the land surface temperature analysis over the Indian subcontinent. It is diagnosed from the inflection points in the daily anomaly cumulative curve of the area-averaged surface temperature over the provinces of Andhra Pradesh, Rayalseema, and Tamil Nadu located in the southeastern part of India. Per this definition, the climatological onset and demise dates of the NEM season are 6 November and 13 March, respectively. The composite evolution of the seasonal cycle of 850hPa winds, surface wind stress, surface ocean currents, and upper ocean heat content suggest a seasonal shift around the time of the diagnosed onset and demise dates of the NEM season. The interannual variations indicate onset date variations have a larger impact than demise date variations on the seasonal length, seasonal anomalies of rainfall, and surface temperature of the NEM. Furthermore, it is shown that warm El Niño�Southern Oscillation (ENSO) episodes are associated with excess seasonal rainfall, warm seasonal land surface temperature anomalies, and reduced lengths of the NEM season. Likewise, cold ENSO episodes are likely to be related to seasonal deficit rainfall anomalies, cold land surface temperature anomalies, and increased lengths of the NEM season. |
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Language |
English |
Summary Language |
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ISSN |
0027-0644 |
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$loc['no'] |
Call Number |
COAPS @ rl18 @ |
Serial |
999 |
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Author |
Misra, V.; Chan, S. |
Title |
Seasonal predictability of the Atlantic Warm Pool in the NCEP CFS |
Type |
$loc['typeJournal Article'] |
Year |
2009 |
Publication |
Geophysical Research Letters |
Abbreviated Journal |
Geophys. Res. Lett. |
Volume |
36 |
Issue |
16 |
Pages |
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ISSN |
0094-8276 |
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$loc['no'] |
Call Number |
COAPS @ mfield @ |
Serial |
386 |
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