Trends in middle- and upper-level tropospheric humidity from NCEP reanalysis data

@article{Paltridge2009TrendsIM,
  title={Trends in middle- and upper-level tropospheric humidity from NCEP reanalysis data},
  author={G. Paltridge and A. Arking and M. Pook},
  journal={Theoretical and Applied Climatology},
  year={2009},
  volume={98},
  pages={351-359}
}
The National Centers for Environmental Prediction (NCEP) reanalysis data on tropospheric humidity are examined for the period 1973 to 2007. It is accepted that radiosonde-derived humidity data must be treated with great caution, particularly at altitudes above the 500 hPa pressure level. With that caveat, the face-value 35-year trend in zonal-average annual-average specific humidity q is significantly negative at all altitudes above 850 hPa (roughly the top of the convective boundary layer) in… Expand
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References

SHOWING 1-10 OF 31 REFERENCES
Water Vapor Feedback in the Tropical Upper Troposphere: Model Results and Observations
The sensitivity of water vapor in the tropical upper troposphere to changes in surface temperature is examined using a single-column, radiative‐convective model that includes couplings between theExpand
Trends in upper-tropospheric humidity
Water vapor is the most radiatively active greenhouse gas, and the process of water-vapor feedback may significantly amplify global warming induced by anthropogenic greenhouse gasses. SatelliteExpand
Can climate trends be calculated from reanalysis data
Several global quantities are computed from the ERA40 reanalysis for the period 1958-2001 and explored for trends. These are discussed in the context of changes to the global observing system.Expand
Does The Earth Have an Adaptive Infrared Iris
Abstract Observations and analyses of water vapor and clouds in the Tropics over the past decade show that the boundary between regions of high and low free–tropospheric relative humidity is sharp,Expand
Positive water vapour feedback in climate models confirmed by satellite data
CHIEFamong the mechanisms thought to amplify the global climate response to increased concentrations of trace gases is the atmospheric water vapour feedback. As the oceans and atmosphere warm, thereExpand
On the Utility of Radiosonde Humidity Archives for climate studies
This paper considers the use of upper-air data from radiosondes in long-term climate studies. The accuracy and precision of radiosonde humidity measurements, including temperature and pressureExpand
The NCEP–NCAR 50-Year Reanalysis: Monthly Means CD-ROM and Documentation
The National Centers for Environmental Prediction (NCEP) and National Center for Atmospheric Research (NCAR) have cooperated in a project (denoted “reanalysis”) to produce a retroactive record ofExpand
The Radiative Signature of Upper Tropospheric Moistening
TLDR
Satellite measurements are used to highlight a distinct radiative signature of upper tropospheric moistening over the period 1982 to 2004 that is accurately captured by climate model simulations and lends further credence to model projections of future global warming. Expand
An Assessment of Climate Feedbacks in Coupled Ocean–Atmosphere Models
Abstract The climate feedbacks in coupled ocean–atmosphere models are compared using a coordinated set of twenty-first-century climate change experiments. Water vapor is found to provide the largestExpand
The Spatiotemporal Structure of Twentieth-Century Climate Variations in Observations and Reanalyses. Part II: Pacific Pan-Decadal Variability
Abstract The spatiotemporal structure of Pacific pan-decadal variability (PDV) is isolated in global long-term surface temperature (ST) datasets and reanalysis atmospheric parameter fields from whichExpand
...
1
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3
4
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