Sentences with phrase «from radiosondes»

Christy et al. (2007) find that the tropical temperature trends from radiosondes matches closest with his v5.2 UAH dataset.

The IPCC fifth assessment report concluded:» based on multiple independent analyses of measurements from radiosondes and satellite sensors it is virtually certain that globally the troposphere has warmed and the stratosphere has cooled since the mid-20th century.

I have checked up on the diurnal variation in temperature and found this paper: Seidel et al., 2005 Diurnal cycle of upper - air temperature estimated from radiosondes.

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

Used in conjunction with Earth - orbiting satellite - based passive temperature and moisture radiometric soundings, as well as active lidar wind measurements, profilers complement the data collected from radiosondes.

Meteorological observations from radiosondes are also applied to benchmark the numerical weather prediction models used to forecast day - to - day weather.

Recent changes in tropospheric water vapor over the Arctic as assessed from radiosondes and atmospheric reanalyses.

The long - term NOAA record of tropospheric humidity from radiosondes and satellites shows that water vapor content (specific humidity) has decreased with warming.

Furthermore, there have been independent measurements / analysis of dew - point temperature from radiosondes in the Tropics.

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

To reduce the variability and bias introduced into the QME AERI / LBLRTM radiance residuals, the moisture profiles from each radiosonde are scaled such that its total precipitable water vapor matches that retrieved from the microwave radiometer (MWR), and these scaled profiles are used to drive the model.

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.

As is clear from a reading of his papers, Miskolczi's infra - red optical depth is no more than a quantity calculated from radiosonde data through the use of a precise and well - constructed radiative transfer algorithm.

Yet the observations, from radiosonde (weather balloons) have consistently shown that not to be the case:

Data assembled from radiosonde balloon records12 is a pretty fair match with HadCRUT34, GHCN - ERSST8 and HadCRUT2v9, suggesting independent corroboration via alternative methodology.

-- 1.87 is the clear - sky, or the all - sky annual mean infrared optical thickness; — if clear - sky, how the cloudless cases were selected out from the radiosonde data set; — if it is the clear + cloudy (all - sky), how did he get it as global average value, when the cloud infrared optical depth is infinite (in half of the cases); — if 1.87 is for all - sky, how much is the clear - sky value (if he got it).

Trends reflect the mean change in temperature (in K per decade) between 20 ° N and 20 ° S for the period 1979 — 2005, obtained from radiosonde temperature measurements 5 (blue and green colours), climate models 8 (dashed orange, with grey shading indicating 2 - sigma range) and the new reconstructions from radiosonde winds 4 (pink, with error bars indicating 2 - sigma range).

In fact much of the model profile is more than two standard deviants from the Radiosonde profiles.

It was because of this that we tend to believe that, if there are spurious trends in the output of the NCEP model, then they most likely derive from the radiosonde input data rather than from the behaviour of the model.

Question: How is Su determined when calculating absorption and emission from radiosonde profiles?

The intensity is proportional to the temperature of broad vertical layers of the atmosphere, as demonstrated by theory and direct comparisons with atmospheric temperatures from radiosonde (balloon) profiles.

The most glaring may be that theory says that the troposphere will warm more rapidly than the surface, but estimates of tropospheric warming from satellites, corellated reasonably well with measurements from radiosonde balloons, show slower warming in the troposphere.

Global, Hemispheric, and Zonal Temperature Deviations Derived From Radiosonde Records.

Global, hemispheric, and zonal temperature deviations derived from radiosonde records.

But the second observation from the radiosonde work should put an end to the claims that the greenhouse effect causes global warming.

Not exact matches

We get observations from ground stations, satellites and radiosondes, which are balloons that National Weather Service forecast offices launch twice a day to measure temperature, pressure, humidity, wind direction and wind speed.

Using U.S. Weather Service data on precipitation, radiosonde measurements of CAPE and lightning - strike counts from the National Lightning Detection Network at the University of Albany, State University of New York (UAlbany), they concluded that 77 percent of the variations in lightning strikes could be predicted from knowing just these two parameters.

I understood from the beginning that each radiosonde data set involves systematic differences in the way the data is processed.

It doesn't affect the trends deduced from them, unless you can prove that the sun is affecting the radiosondes today in a different way that it was affecting them in the 80's, in average.

This is no different from your averaging together the models, or averaging the radiosonde data over altitude.

Specifically, the characteristics of the divergence across the datasets are strongly suggestive that it is an artifact resulting from the data quality of the surface, satellite and / or radiosonde observations.

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 most popular radiosonde manufacturer worldwide today is the Vaisala corporation, whose strategy for coping with solar heating is to concede that it will happen and try to correct for it: the thermistor is mounted on a «boom» that sticks into the air flow where the sun can shine on it, but the heating error is estimated from the measured ascent rate and solar zenith angle and subtracted from the reported temperature.

In an independent study, Gettleman et al. (2002) noted a 0.4 degC / decade trend in the dew - point temperature in the 1958 - 1997 radiosonde observations from the Tropics.

The more data from old radiosondes, ships» logs and small meteorological stations is included, the better our picture of how things were 80 or more years ago will be.

«Independent efforts to create climate records from satellite and radiosonde records since the TAR have served to illuminate previously unrecognised uncertainties in temperature evolution aloft (Seidel et al., 2004, Thorne et al., 2005).

Note that the entire 0.6 degC warming comes from surface station measurements, not from satellite or radiosonde measurements.

«Miskolczi additionally shows from 61 years of radiosonde data that a long - term decrease in the Earth's greenhouse effect from humidity decreases in the middle and upper atmosphere have approximately counterbalanced the increase in the greenhouse effect from rising CO2 levels.

Figure 10.7 in WG1 of AR4 showed a predicted heating of about 0.6 deg C per decade between 400 and 100hPa and -30 deg S to 30deg N. However, none of the data from satellites or radiosondes confirms anything like that rate of heating.

Climate researchers know from past experience that satellite sensors, radiosondes and ocean profilers are prone to bias.

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.

This atmospheric evidence comes from instruments in weather satellites, producing the only truly global data — and, independently, from thermometers in balloon - borne radiosondes.

In fact, most climate specialists now agree that actual observations from both weather satellites and balloon - borne radiosondes show no current warming whatsoever.»

Variations in global - mean temperature are inferred from three different sets of measurements: surface observations, satellite observations, and radiosonde observations.

How, for example, does this incident cast doubt on the findings from satellite data, radiosondes, borehole analysis, glacial melt observations, sea ice melt, sea level rise, proxy reconstructions, permafrost melt and such like, gathered completely independently of the CRU?

Haimberger, Leopold, Christina Tavolato, Stefan Sperka, 2008: Toward Elimination of the Warm Bias in Historic Radiosonde Temperature Records — Some New Results from a Comprehensive Intercomparison of Upper - Air Data.

The satellite has the best coverage and suffers least from UHI and errors in TOB homogenisation, station drop outs etc, and is verified independently against radiosonde temperature measurements, but it is only of short duration.

The models assimilate inputs from weather stations, drifting buoys, radiosondes, aircraft, vessels and since the 1970s, high coverage infra - red and microwave satellite based sensors.

The paper discusses four different sets of data on satellite atmospheric monitoring (all producing slightly different end products), two radiosonde data sets (from UK Hadley Centre and University of Vienna, both adjusted for inhomogeneities — and that opens another can of worms), four different surface temperature data sets (based on reconstructed sea surface temperature data sets from Hadley Centre, again, and Climate Research Unit).