When I saw the NPR report, I queried Sydney Levitus, who's been
tracking ocean heat buildup for a long time and runs the main effort keeping track of changes at NOAA.
Ocean warming: «Assessing recent warming using instrumentally homogeneous sea surface temperature records» «
Tracking ocean heat uptake during the surface warming hiatus» «A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change» «Unabated planetary warming and its ocean structure since 2006»
The implicit assumption by Muscheler and Schmidt that GMAST should
track ocean heat content with no major divergence now knocked down as well.
It is the special case where GMAST actually
tracks ocean heat content.
«Assessing recent warming using instrumentally homogeneous sea surface temperature records» «
Tracking ocean heat uptake during the surface warming hiatus» «A review of global ocean temperature observations: Implications for ocean heat content estimates and climate change» «Unabated planetary warming and its ocean structure since 2006»
Ironically, in Nature, Victor and Kennel argue that «policy - makers should also
track ocean heat content» because it «is a good proxy for the long - term risk to future generations and planetary - scale ecology.»
First,
tracking ocean heat content is considerably harder than tracking surface air temperature.
Not exact matches
Burt Armstrong @ 16, you are very much on the right
track, but think more in terms of accumulating
ocean heat content and rising sea surface temperatures.
Thus, some
heat gets converted to kinetic energy, but that gets converted back to
heat, either by viscosity or by thermally - indirect circulations that produce APE while pulling
heat downward in the process (LHSO: Ferrel cell (driven by extratropical storm
track activity), Planetary - scale overturning in the stratosphere and mesosphere (includes Brewer - Dobson circulation (I'm not sure if the whole thing is the Brewer - Dobson circulation or if only part of it is)-RRB-, some motions in the
ocean; LVO: wind driven mixing of the boundary layer and of the upper
ocean (though mixing itself tends to destroy the APE that the kinetic energy would create by forcing
heat downward)-RRB-.
There have been many explanations put borth inlcluding deep
ocean heating, ozone chemistry, volcanoes reducing incident energy, trade winds and, of course, Cowtan and Way along with this latest data set that shows the energy imbalance is still
tracking CO2.
The
oceans hold the majority of
heat in the system, are full of sloshy cycles on time scales from years to decades and, despite an increase in monitoring using sophisticated diving buoys, remain only spottily
tracked.
The chart shows that starting in the late 1940's, we have been able to measure the
heat content of the top 2000 meters of
ocean accurately enough so that annual changes in
ocean heat content of less than 1e22 joules can be detected and
tracked.
Which implies that since the late» 40's - early» 50's we have had a data collection system deployed capable of measuring and
tracking the annual TEMPERATURE of the top 2000 meters of the
oceans of the world (necessary to calculate its
heat content)-- all of them — with a precision and accuracy in the millidegree range.
«It's hard to
track how much is going into the
oceans, because the
oceans are soaking up some of the
heat.
-- no it isn't
Ocean heat content is rising — no it isn't, model - based The tropical belt is widening — since LIA Storm
tracks are shifting polewards.
In this climate region a strong storm
track combines with an expanding fresh water wedge issuing from melting Antarctic glaciers to force down - welling and atmosphere to
ocean heat capture.
In this data analysis activity, students explore how hurricanes extract
heat energy from the
ocean surface by
tracking Hurricane Rita and sampling sea surface temperatures along its path.
Thus, we suggest that scientists and modelers who seek global warming signals should
track how much
heat the
ocean is storing at any given time, termed global
ocean heat content (OHC), as well as sea level rise (SLR).
Allows you to keep
track of impact on
ocean heat content.
The pink shading represents simulations where greenhouse gas emissions and other human influences have been taken into account — these simulations do a much better job at
tracking temperatures and
ocean heat content globally and regionally.
Excess
heat is what is produced by GHG, but due to
heat capacity differences and transient diffusion, the temperatures of
ocean and atmosphere + land do not necessarily
track until far down the road.
This figure indicates 3 things: (1) the time lag between emitting greenhouse gases and when we see the principle effect is about 30 years, due mostly to the time required to
heat the
oceans, (2) the rate of temperature increase predicted by a climate sensitivity of 3 °C
tracks well with the observed rate of temperature increase, and (3) we have already locked in more than 1.5 °C warming.
The sensitivity
ocean circulation and energy balance to background mixing and the criticality of ocean heat and freshwater fluxes, suggest that as the Arctic Ocean changes, we should be tracking background mixing the way we track temperature and sali
ocean circulation and energy balance to background mixing and the criticality of
ocean heat and freshwater fluxes, suggest that as the Arctic Ocean changes, we should be tracking background mixing the way we track temperature and sali
ocean heat and freshwater fluxes, suggest that as the Arctic
Ocean changes, we should be tracking background mixing the way we track temperature and sali
Ocean changes, we should be
tracking background mixing the way we
track temperature and salinity.
He also said the ongoing strong El Niño event in the Pacific
Ocean may have influenced the storm
track of this storm as well as the extra
heat present in the Atlantic, since the Atlantic tends to have less active hurricane seasons and winter storm seasons during El Niños, allowing warm water anomalies to persist.
This implies stronger transport of
heat to the deep
ocean and polar
oceans than is going on today, and suggests the observations are
tracking in that direction.
And the ARGO - era
ocean heat content data has been adjusted so many times it's difficult to keep
track of all of them.