Auxillary material for
"Increase in the intensity of post-monsoon Bay of Bengal tropical cyclones"
(Manuscript number: 2014GL060197)
Karthik Balaguru1,2, Sourav Taraphdar2, L. Ruby Leung2 and Gregory R. Foltz3
(1) Marine Sciences Division,
Pacific Northwest National Laboratory,
Seattle, WA, USA.
(2) Atmospheric Science & Global Change,
Pacific Northwest National Laboratory,
Richland, WA, USA.
(3) Physical Oceanography Division,
Atlantic Oceanographic and Meteorological Laboratory,
Miami, FL, USA.
Journal: Geophysical Research Letters
Introduction
The auxiliary (supplementary) material includes additional analyses that provide further
support to our conclusions from the manuscript. In section 1, we discuss the sensitivity of
our results to different data products and in section 2, we provide further analysis to
strengthen our conclusion that the post-monsoon Bay of Bengal tropical cyclones have
increased in intensity. A list of the various auxiliary files and a brief description for each
file is given below.
File name
text01.tex
fs01.pdf
fs02.pdf
fs03.pdf
fs04.pdf
Description
Supplementary Information text (Latex file)
Supplementary Information figure 1
Supplementary Information figure 2
Supplementary Information figure 3
Supplementary Information figure 4
The figure captions for the supplementary figures are given below
Supplementary Information figure 1: A) The change in SST based on NOAA SST
data. B) The change in OHC based on ECMWF ocean reanalyses data. ‘Change’
represents the October-November 1996-2010 mean minus the October-November 19811995 mean. Changes shown are statistically significant at the 95% level.
Supplementary Information figure 2: The change in Moist Static Energy (MSE) based
on ERA-INTERIM data. The MSE was averaged between the 700 and 925 hPA levels.
‘Change’ represents the October-November 1996-2010 mean minus the OctoberNovember 1981-1995 mean. Changes shown are statistically significant at the 95% level.
Supplementary Information figure 3: A) The number of six-hour periods spent by
storms, in each category, for the two 15-year periods 1981-1995 and 1996-2010 are
shown. The number of six-hour storm periods spent in each category to the total number
of six-hour storm periods is indicated for each 15-year period as a percentage. Also
indicated is the total number of storm days in each 15-year period. B) Histogram of the
number of six-hour periods during which MTC-phase was maintained by each MTC
during its lifetime. Values of average time spent as an MTC during a MTC’s lifetime for
each 15-year period are shown (MTC – Major Tropical Cyclone, TC – Tropical Cyclone,
TS – Tropical Storm).
Supplementary Information figure 4: The change in sea surface height (SSH) based on
NCEP data. ‘Change’ represents the October-November 1996-2010 mean minus the
October-November 1981-1995 mean. Changes shown are statistically significant at the
95% level.