Sentences with phrase «by radiosonde»

DWT of Feb Mar 07 vs Feb Mar 08 were very similar, in fact 08 Was warmer by 1 K by radiosonde DWT's as per graph on my website.

There can be no question that UAH data is more accurate than RSS, being confirmed by radiosonde data deriving from some 800 independently operated radiosonde programs.

The latter is NOT measured by the radiosonde.

So, since the sat samples much more of the globe and the readings have been confirmed by radiosonde — a fact you have completely avoided to explain — the sat data rules.

The models can't reproduce the rapid climate change at the end of the Younger Drys, nor can the models reproduce the lapse rate in the tropics measured by radiosondes and MSUs.

Further evidence has accumulated of an anthropogenic influence on the temperature of the free atmosphere as measured by radiosondes and satellite - based instruments.

I might understand you not knowing off the top of your head but what kind of scientist wouldn't quickly look up what data is returned by radiosondes before shooting off his mouth about them?

This is indicated for the last 50 years by radiosondes mounted on weather balloons and for since 1979 (when the first pertinent satellites were launched) by MSU mounted on satellites.

Some people question the quality of the water vapor measurements made by the radiosondes but I've been informed that Miskolczi believes that the presently published water vapor measurements are the current best bet.

The green curve shows temperature data from the same layer as measured by radiosondes (i.e., «simulated 2LT»)(Parker et al., 1997).

Temperatures aloft can be measured in a number of ways, two of which are useful for climate monitoring: by radiosondes (balloon - borne instrument packages, including thermometers, released daily or twice daily at a network of observing stations throughout the world), and by satellite measurements of microwave radiation emitted by oxygen gas in the lower to mid-troposphere, taken with an instrument known as the Microwave Sounding Unit (MSU).5 The balloon measurements are taken at the same Greenwich mean times each day, whereas the times of day of the satellite measurements for a given location drift slowly with changes in the satellite orbits.

They agree reasonably well with ERA - 40 over land where values are constrained by radiosondes, with some discrepancies over Africa.

Despite unanimous agreement on the sign of the trends, substantial disagreement exists among available estimates as to the rate of temperature changes, particularly outside the NH extratropical troposphere, which has been well sampled by radiosondes.

Not exact matches

The ascent speeds of those convective clouds are determined by a factor called CAPE — convective available potential energy — which is measured by balloon - borne instruments, called radiosondes, released around the U.S. twice a day.

GTTA are represented by data from satellite microwave sensing units (MSU) for the period 1980 — 2008 and from radiosondes (RATPAC) for 1958 — 2008.

There is evidence in satellite and radiosonde data and in observational data for poleward expansion of the tropical circulation by as much as a few degrees of latitude since the 1970s [34]--[35], but natural variability may have contributed to that expansion [36].

[blockquote] The water vapour positive feedback theory has already been comprehensively disproven by independent investigations by Douglass, Lindzen, Paltridge and Spencer, inter alia (who used satellite data and radiosondes to reach their conclusions and showed that the posited feedbacks are either missing or negative).

They obtained the coefficients for T2, T4 by equating the readings with radiosonde observations.

You would have to prove that radiosondes in the 80's were more affected by the sun than today's radiosondes.

At monthly timescales (which should not be affected by trends in the model or possible drifts or calibration problems in the satellites or radiosondes) there is a very good match.

We conclude that the fact that trends in thermometer - estimated surface warming over land areas have been larger than trends in the lower troposphere estimated from satellites and radiosondes is most parsimoniously explained by the first possible explanation offered by Santer et al. [2005].

The US radiosonde, until recently made exclusively by the VIZ corporation and now under contract to two separate manufacturers, has followed the strategy of trying to insulate the thermistor from solar effects by ducting it inside a white plastic and cardboard housing.

The Sherwood et al. study in Science Express concerns one particular type of long - recognized radiosonde error, that caused by the sun shining on the «thermistor» (basically, a cheap thermometer easily read by an electric circuit).

I do them myself two ways, one while using the sun as a fixed sphere of reference, the other by taking all of upper air radiosonde data, condensating them to one readable number in degrees Kelvin.

Eunice, any radiosonde stuff, including Paltridge (2009), has to be qualified by instrument error, especially for humidity.

«The radiosonde data prepared by my collaborators made it possible to directly study the environmental conditions under which shallow and deep clouds occurred,» Jingfeng Wang of MIT told environmentalresearchweb.

Millions of measurements taken by balloon - borne radiosondes do not show it.

Temperature measurements retrieved from the hundreds of balloon - borne radiosonde instruments that are released each day by the various national weather services provide much more detailed information on the vertical structure of atmospheric temperature changes than is available from satellites.

By 2010 Miskolczi had found proof by using NOAA records of radiosonde measurements going back to 194By 2010 Miskolczi had found proof by using NOAA records of radiosonde measurements going back to 194by using NOAA records of radiosonde measurements going back to 1948.

What one can really learn from the radiosonde data on the changes in H2O concentration is an interesting issue not answered conclusively by this analysis.

pg.5346 (pdf pg 11), Sherwood et al. (2008 October 15) Robust Tropospheric Warming Revealed by Iteratively Homogenized Radiosonde Data, Journal of Climate, Vol.

These include the primary surface temperature thermometer records (NASA GISS, NOAA, and HadCRUT); satellite measurements of the lower troposphere temperature processed by Remote Sensing Systems (RSS) and the University of Alabama - Huntsville (UAH); and 5 major reanalysis datasets which incorporate station data, aircraft data, satellite data, radiosonde data, buoy and ship measurements, and meteorological weather modeling.

Although modern remote sensing by satellites, aircraft and ground sensors is an increasing source of atmospheric data, none of these systems can match the vertical resolution (30 m (98 ft) or less) and altitude coverage (30 km (19 mi)-RRB- of radiosonde observations, so they remain essential to modern meteorology.

A radiosonde is a battery - powered telemetry instrument package carried into the atmosphere usually by a weather balloon that measures various atmospheric parameters and transmits them by radio to a ground receiver.

The QBO in WACCM4 is prescribed by relaxing equatorial zonal winds between 86 and 4 hPa to observed radiosonde data (28 - month period).

The position of the radiosonde can be monitored by radar tracking so that wind speed and direction as a function of height are routinely available — for this reason radiosondes are also referred to as rawinsondes.

And, since IPCC assumed essentially constant relative humidity with warming to arrive at the water vapor feedback and it appears that RH decreases with warming (Minschwaner + Dessler 2005, NOAA radiosonde and satellite humidity records), the water vapor feedback is very likely too high by around 0.3 C to 0.6 C, bringing the overall adjusted ECS to roughly 0.9 C to 1.2 C.

The Hadley radiosondes don't match the models, but it's hidden by clutter in their graphs.

Uncertainty in these trend values arises from different methodological choices made by the groups deriving satellite products (Mears et al., 2011) and radiosonde compilations (Thorne et al., 2011), and from fitting a linear trend to a time series containing substantial interannual and decadal variability (Santer et al., 2008; McKitrick et al., 2010).

Looking further, I found a comment by Dr. Roy Spencer's blog, which echoed my point on inequality, and also notes that the radiosonde data Miskolczi is looking at to argue 60 years of no change is, well, a bit poor.

Mears and others said that the satellite measurements should not be taken seriously because they only infer the temperature from measurements of radio emissions by Oxygen molecules - AND - that these final numbers never match actual temperature measurements made over land and water (ground stations as well as radiosonde).

The second is caused by the differences in the observation time and location between the satellite and radiosonde.

There is evidence in satellite and radiosonde data and in observational data for poleward expansion of the tropical circulation by as much as a few degrees of latitude since the 1970s [34]--[35], but natural variability may have contributed to that expansion [36].

GTTA are represented by data from satellite microwave sensing units (MSU) for the period 1980 — 2008 and from radiosondes (RATPAC) for 1958 — 2008.

The satellite measurements appear to be substantiated by independent trend estimates for this period based on radiosonde data.

UAH validates some of the choices they have made on the best way to process satellite data (radiances) by comparing their results to radiosondes.

From these daily values the monthly mean zonal wind components were calculated for the levels 70, 50, 40, 30, 20, 15, and 10 hPa and a data set from 1953 to the present was produced by combining the observations of the three radiosonde stations Canton Island (closed 1967), Gan / Maledive Islands (closed 1975), and Singapore (data file: qbo.dat).

Anyway, our paper concluded by suggesting that, in view of the extreme significance of upper - level humidity to the climate change story, the international radiosonde data on upper - level humidity should not be «written off» without a serious attempt at abstracting the best possible humidity signal from within the noise of instrumental and operational changes at each of the relevant radiosonde stations.

A long - term dataset of upper - air temperatures for Australia, measured using radiosondes, is currently being prepared by the Bureau.

If no good calibration can be obtained, then the satellite data is measuring a different quantity than the radiosonde data and the two data sets should not be merged or spliced by any method.