By a News Reporter-Staff News Editor at The Business of Global Warming -- New research on Science - Climate Research is the subject of a report. According to news reporting originating in Socorro, New Mexico, by VerticalNews journalists, research stated, “Long-term changes in upper-tropospheric jet latitude, altitude, and strength are assessed for 1980-2014 using five modern reanalyses: MERRA, MERRA-2, ERA-Interim, JRA-55, and NCEP CFSR. Changes are computed from jet locations evaluated daily at each longitude to analyze regional and seasonal variations.”
Financial support for this research came from National Aeronautics and Space Administration.
The news reporters obtained a quote from the research from the New Mexico Institute of Mining and Technology, “The changes in subtropical and polar (eddy driven) jets are evaluated separately. Good agreement among the reanalyses in many regions and seasons provides confidence in the robustness of the diagnosed trends. Jet shifts show strong regional and seasonal variations, resulting in changes that are not robust in zonal or annual means. Robust changes in the subtropical jet indicate tropical widening over Africa except during Northern Hemisphere (NH) spring, and tropical narrowing over the eastern Pacific in NH winter. The Southern Hemisphere (SH) polar jet shows a robust poleward shift, while the NH polar jet shifts equatorward inmost regions/seasons. Both subtropical and polar jet altitudes typically increase; these changes are more robust in the NH than in the SH. Subtropical jet wind speeds have generally increased in winter and decreased in summer, whereas polar jet wind speeds have weakened (strengthened) over Africa and eastern Asia (elsewhere) during winter in both hemispheres. The Asian monsoon has increased in area and appears to have shifted slightly westward toward Africa. The results herein highlight the importance of understanding regional and seasonal variations when quantifying long-term changes in jet locations, the mechanisms for those changes, and their potential human impacts.”
According to the news reporters, the research concluded: “Comparison of multiple reanalyses is a valuable tool for assessing the robustness of jet changes.”
For more information on this research see: Seasonal and Regional Variations of Long-Term Changes in Upper-Tropospheric Jets from Reanalyses. Journal of Climate , 2018;31(1):423-448. Journal of Climate can be contacted at: Amer Meteorological Soc, 45 Beacon St, Boston, MA 02108-3693, USA. (American Meteorological Society - www.ametsoc.org; Journal of Climate - http://www.ametsoc.org/pubs/journals/jcli)
Our news correspondents report that additional information may be obtained by contacting G.L. Manney, New Mexico Inst Min & Technol, Socorro, NM 87801, United States.
The direct object identifier (DOI) for that additional information is: https://doi.org/10.1175/JCLI-D-17-0303.1. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.
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CITATION: (2018-05-07), New Findings from New Mexico Institute of Mining and Technology in the Area of Climate Research Reported (Seasonal and Regional Variations of Long-Term Changes in Upper-Tropospheric Jets from Reanalyses), The Business of Global Warming, 99, ISSN: 0000-0000, BUTTER® ID: 015626702
From the newsletter The Business of Global Warming.
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