Some Recent Media Stories Featuring My Research
Times of London, October 21, 2021
The Atlantic, August 16, 2020
The Guardian, November 14, 2017
The January 15, 2022 underwater volcanic eruption
near Tonga produced an air pressure wave that propagated away from
the eruption at about 300 m/s and likely circled the globe several times.
This phenomenon was observed in satellite imagery as well as in
instrumental atmospheric observations. A similar pressure wave
was observed in barograph records in the hours and days after
the famous August 1883 eruption of Mt. Krakatau (or "Krakatoa") in Indonesia.
The propagation of the atmospheric wave front as estimated using
the barometric data at about 50 stations worldwide was plotted on
maps by the researchers involved in the Royal Society Krakatoa
Committee. The maps were published in a Royal Society report in 1888.
I made this simple animation of the propagation of the Krakatau
pressure wave front by adapting the map images from the Royal
Society report. The pressure pulse is shown propagating away
from Krakatoa and then, about 17 hours later, converging at
the antipodal point.
Click here for a 48 second version of the animation of
the propagation of the atmospheric pressure pulse from
the 1883 eruption of Mt. Krakatau including explanatory material
On July 6, 2021 I gave the opening address in the
World Climate Research Programme's SPARC project's online
celebration of the 60th anniversary of the discovery of the stratospheric
quasi-biennial oscillation (QBO). This is the recorded lecture from
"The Discovery of the QBO and Related Developments: 1883-1961"
This is a longer version of this lecture adapted for a
somewhat wider audience:
"The Discovery of the QBO and Related Developments: 1883-1961 - Extended Version"
Hawai`i From Space
Interesting weather in Hawai`i -
an animation of IR images during a frontal passage December 4-6, 2007
This resulted in widespread damage and disruption in Hawai`i as seen in
front page newspaper story
Interesting weather on Mars! -
a NASA animation of Mars Spirit Rover images showing several dust
devils racing across the surface. Images were taken on
July 13, 2005. Real elapsed time in seconds is shown in the
lower left corner
QBO Vizualization -
Monthly-mean zonal-mean zonal wind observations from UKMO analyses November 1991-June 1998
Observations and modelling of the global-scale circulation of the
Climate modelling and climate change
Meteorology and chemistry of the stratosphere and mesosphere
Atmospheric and oceanic waves and tides
Dynamics of planetary atmospheres
History of atmospheric science
Here is an attempt to visualize the polar vortex as simulated in the
SKYHI General Circulation Model. What is shown is an instantaneous
of a surface that surrounds the air with low nitrous oxide concentration
(in this case low relative to the mean value at each horizontal level).
What you see is a Northern Hemisphere projection with the vertical scale
marked in potential temperature. The vertical extent shown is from about
10 km to 45 km. The main vase-like sheath outlines the polar vortex,
the ribbons wrapping around the vortex represent air that has recently
from the vortex. (for more details)
to see the strongest Pacific
typhoon simulated in what back in 1997 was an extremely fine resolution global
For more details see Bulletin of the American Meteorological
Society, 78, 2874 (1997).
My History of the Early Days of Upper Atmospheric
Draft White Paper for the Proposed Effects of Tropical Convection
"Summer" School on the
Physics of the Equatorial Atmosphere, Trieste, Italy, held
in September and October 2001.
(for a formal group photo of lecturers and students)
Here is my colleague Wataru Ohfuchi during a
visit he made to IPRC back in 2005.
In 2006 Wataru and I edited a book on high resolution numerical
(for more information)
Here is a view of near-instantaneous precipitation
from a high-resolution global model run at the ESC. This is
a photo taken while an animation produced in collaboration
with the Bishop Museum in Honolulu is projected onto
a large sphere in their "Science on the Sphere" exhibit hall.
In 2006 & 2007 I participated in Hawai`i Public Radio
shows featuring discussions of environmental issues and research
efforts relevant to Hawai`i.
MP3 audio file
MP3 audio file
From 2014 through 2017 I participated in three episodes of
the ThinkTech Hawai`i
web TV show "Research in Manoa":
"Bringing Climate Change Home"
"Big Data at Manoa"
"A Letter from the
Sky - Weather Influenced by the Upper Atmosphere"
SPARC Information -
Stratospheric Processes and their Role in Climate
Commission on the Middle Atmosphere OLD HOME PAGE
SPARC Radiosonde Climatology Project
Centre for Theoretical Physics
ETCE - Effects
of Tropical Convection Experiment White Paper
The Journal of
High School Science