However, UAH is not the only group using satellite data to
measure atmospheric temperatures.
Starting in late 1978, nine polar - orbiting satellites carried identical copies of the MSU to
measure atmospheric temperatures.
As the Spencer - Christy method to
measure atmospheric temperatures was being developed — a method that would permit scientists to test the greenhouse gas warming hypothesis in the Charney Report — international organizations did not wait to act.
Further, the temperature calculations are independently confirmed by four different sets of weather balloons that
measure atmospheric temperatures using thermometers.
A total of 15 different satellites have been used to
measure atmospheric temperatures since 1979, with around two satellites actively measuring at any given time.
These four channels
measure the atmospheric temperature in four thick layers spanning the surface through the stratosphere...... The brightness temperature for each channel corresponds to an average temperature of the atmosphere averaged over that channel's weighting function.
Snce we don't have 6 Km long thermometers, other ways of
measuring atmospheric temperatures have to be devised (perhaps there are a few already in place).
Measuring the atmospheric temperature without standardising the pressure gives little information that would help to assess global energy of the atmosphere As far as I can make out, one Bar of pressure equates to 3 degrees C roughly, So the range of variation in either would significantly relate to the other.
The value of
measuring atmospheric temperatures globally becomes clear when we recall that the untested hypothesis behind global warming projects that greenhouse gas warming in the atmosphere will cause the surface to warm by 6 degrees Fahrenheit (with a probable error of plus or minus 3 degrees).
If you want to
measure atmospheric temperature, then why use TLT, which is strongly influenced by surface temperatures?
Not exact matches
Now a group of American and British scientists have used a new chemical technique to
measure the change in terrestrial
temperature associated with this shift in global
atmospheric CO2 concentrations.
By being able to
measure electron density with high accuracy in
atmospheric pressure low -
temperature plasma, it is no longer necessary to rely solely upon experience and trial and error.
When it comes to climate change science, researchers typically use
atmospheric carbon dioxide levels from the late 19th century as a guideline, because that's when instrumentation was developed to accurately
measure temperatures.
This $ 1.5 - billion satellite is state - of - the - art, carrying five advanced instruments to
measure everything from sea - surface
temperature to
atmospheric winds.
The instruments
measure atmospheric densities and
temperatures for both the electrically neutral (e.g., carbon dioxide, CO2, atomic oxygen, O, atomic hydrogen, H, and other species) and the electrically charged constituents (that is, ions such as CO2 + and O2 +, and electrons).
To estimate the amount of precipitation, Ghosh's team
measured a common paleoclimate proxy for
temperature, humidity, and
atmospheric circulation.
Regarding your second comment, in point of fact
temperature increase is linear with logarithmically increasing CO2: climate sensitivity, you may recall,
measures global mean surface
temperature increase per doubling of
atmospheric concentration of CO2.
We use
measured global
temperature and Earth's
measured energy imbalance to determine the
atmospheric CO2 level required to stabilize climate at today's global
temperature, which is near the upper end of the global
temperature range in the current interglacial period (the Holocene).
In view of the present discussion of the role of carbon dioxide in effecting global
temperature I would like to know of any laboratory or bench experiments that show a
temperature - CO2 concentration curve within the range of currently
measured atmospheric CO2 levels.
My questions, the answers to which I may have missed in this string, are how can one relate the forcing at 2XCO2 to an expected
atmospheric temperature rise in a way that a citizen can understand; and is the forcing as stated as a degree C to be compared with the forcing at 280 ppm (pre industrial) NOT with today's
measured temperature or rise above average?
In another study, a multi-year time series of surface radiative fluxes and other
atmospheric properties
measured by a DOE climate program are being used at AER to evaluate radiative fluxes and to validate forecasts of surface
temperature and other properties in the Weather Research and Forecasting (WRF) regional model.
I have shown that the heat emissions are four times the amount accounted for in the actual
measured rise in
atmospheric temperature.
I was under the impression that the
atmospheric near surface
temperatures have been
measured in the past using thermometers.
By
measuring changes in winds, rather than relying upon problematic
temperature measurements, Robert J. Allen and Steven C. Sherwood of the Department of Geology and Geophysics at Yale estimated the
atmospheric temperatures near 10 km in the Tropics rose about 0.65 degrees Celsius per decade since 1970 — probably the fastest warming rate anywhere in Earth's atmosphere.
Perhaps more telling is the fact that the JMA
measure reveals no hiatus in the pace of global
atmospheric temperature increase with all years since 1998 at or above the trend line.
By
measuring changes in winds, rather than relying upon problematic
temperature measurements, researchers estimated the
atmospheric temperatures near 10 km in the Tropics rose about 0.65 degrees Celsius per decade since 1970 — probably the fastest warming rate anywhere in Earth's atmosphere.
Allen and Sherwood predicted that
measuring thermal winds, which are tied to fluctuations in
temperatures, would be a more accurate gauge of true
atmospheric warming than the thermometers.
By contrast,
atmospheric temperatures measured from weather satellites show only insignificant warming between 1978 and 1997 — as do the independent data from weather balloons around the world.
For example, let's say that evidence convinced me (in a way that I wasn't convinced previously) that all recent changes in land surface
temperatures and sea surface
temperatures and
atmospheric temperatures and deep sea
temperatures and sea ice extent and sea ice volume and sea ice density and moisture content in the air and cloud coverage and rainfall and
measures of extreme weather were all directly tied to internal natural variability, and that I can now see that as the result of a statistical modeling of the trends as associated with natural phenomena.
If one looks over the past half century one would expect to find that, as a result of the clearly
measured increase in
atmospheric CO2, the Global
Temperature is warming.
The international agreements forming the IPCC and the UNFCCC were designed to prevent greenhouse gas warming of the atmosphere, and as those agreements were hammered out, two American scientists, Roy Spencer and John Christy, developed a method that uses data collected from weather satellites to produce science's first comprehensive
measure of global
atmospheric temperatures.
Since December 1978, the National Oceanic and
Atmospheric Administration's polar - orbiting satellites have
measured upwelling microwave radiation from
atmospheric oxygen, and Spencer and Christy use this data to calculate the
temperature of broad volumes of the atmosphere.
Pinatubo was particularly good for this, because as Soden et al 2002 showed, the GCMs of the day not only accurately modeled the
atmospheric drying after the eruption, but also demonstrated that a positive water vapor feedback was required to explain the MSU -
measured lower troposphere
temperatures.
True — it probably will not have a measurable effect of
atmospheric temperatures per se» but remember a significant number of
temperature measuring stations are close ground level and these stations may record lower
temperatures in each locality.
Although the satellites are considered the gold - standard for
measuring and observing sea levels, hurricanes / typhoons, ozone holes, sea ice,
atmospheric CO2 distribution, polar ice sheet masses and etc., the same 24/7 technology used to
measure temperatures across the entire habitable world is now being ignored (i.e., denied) due to the above inconvenient evidence.
This
measure is available for the US from the BEST data set... The reconfirmation now of a strong sun -
temperature relation based specifically upon the daytime
temperature maxima adds strong and independent scientific weight to the reality of the sun -
temperature connection... This suggests strongly that changes in solar radiation drive
temperature variations on at least a hemispheric scale... Close correlations like these simply do not exist for
temperature and changing
atmospheric CO2 concentration.»
The
measuring and recording of
atmospheric temperature at locations around the world for the past century + has been fundamentally an urban project.
As they state: «Satellite -
measured skin
temperatures are related to the surface air
temperatures but do not necessarily have the same seasonal and diurnal variations, since they are more coupled to surface energy exchange processes and less to the overlying
atmospheric column.
Four fifty - year - old independent radiosonde data sets
measuring atmospheric pressure,
temperature, wind speed and direction in those latitudes show no tropospheric hot spot where there should be one according to AGW gospel.
We've only been keeping thermometer records since 1880, and satellites have only been
measuring near - surface
atmospheric temperatures since the mid-1970s.
* Extremely high geopotential heights (a vertically aggregated
measure of
atmospheric temperature) over the northeastern Pacific Ocean are historically linked to very low precipitation in California.
We use
measured global
temperature and Earth's
measured energy imbalance to determine the
atmospheric CO2 level required to stabilize climate at today's global
temperature, which is near the upper end of the global
temperature range in the current interglacial period (the Holocene).
Common climatic elements
measured by instruments include
temperature, precipitation, wind speed, wind direction, and
atmospheric pressure.
Whereas
measures of ocean
temperature are almost equivalent to heat content,
measures of
atmospheric temperature are extremely inaccurate metrics for heat content.
Regarding your second comment, in point of fact
temperature increase is linear with logarithmically increasing CO2: climate sensitivity, you may recall,
measures global mean surface
temperature increase per doubling of
atmospheric concentration of CO2.
The Stadium Wave is actually a useful model (via the LOD
measure) and allows us to reduce the uncertainty in the attribution of the
atmospheric CO2 concentration to the current global
temperature rise.
TOBS and all the rest of the games played with
atmospheric temperature do not provide a
measure of the amount of energy that was in the atmosphere that day.
To estimate the amount of precipitation, Ghosh's team
measured a common paleoclimate proxy for
temperature, humidity, and
atmospheric circulation.
Steve — I have stated multiple times that the climatologists are all gathered under the lamppost as its light there — using
atmospheric temperature when they should be
measuring atmospheric heat content in kilojoules per kilogram taking account of the enthalpy.
It is also when we have increasingly good
measures of
atmospheric temperature, ocean heat content, and the various agents that warm and cool the climate.