Back to basics: Radiosondes: Part 1 –The instrument

Brettle, Mike; Galvin, Jim

doi:10.1256/wea.126.02a

Cited by 31 publications

(22 citation statements)

References 7 publications

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“…Traditionally, the long-term PWV observation records from radiosondes represent an important resource for monitoring the variation of atmospheric water vapor. As it boasts high accuracy and high vertical resolution, radiosonde PWV is also often used as the reference data in evaluating the performance of other PWV detection techniques [20][21][22]. However, it is difficult to quantify an accurate PWV trend from radiosonde PWV due to limitations such as incomplete and inhomogeneous observations and sparse spatial distributions [6,23].…”

Section: Introductionmentioning

confidence: 99%

Trends and Variability in Precipitable Water Vapor throughout North China from 1979 to 2015

Wang

Tongchuan

Jiageng

et al. 2017

Advances in Meteorology

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This study analyzed the variability and trends in precipitable water vapor (PWV) in North China from 1979 to 2015. The spatial distribution of annual mean PWV was generally characterized by two high PWV centers in Eastern China and the Tarim Basin and two low PWV centers in Northern Tibet and Qinghai Province and in Inner Mongolia. The levels of seasonal mean PWV were highest in summer, followed by autumn and spring, and lowest in winter. The maximum monthly mean PWV occurred in July and August, while the minimum occurred in December to February. Increasing trends in PWV, with the trend magnitude ranging from 0.1 to 1.2 mm decade−1 over North China, were observed in the radiosonde, ERA-interim, and MERRA-2 PWV data from 1979 to 1999; but a slightly decreasing trend of −0.4 mm decade−1 from radiosonde was found in most regions of North China from 1979 to 2007. A monotonically increasing PWV trend was detected throughout North China between 1979 and 1999, with the maximum trend occurring in summer and the minimum occurring in winter. For the period of 1979–2007, a slightly but less marked decreasing trend was found at most stations in North China in all four seasons.

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Section: Introductionmentioning

confidence: 99%

Trends and Variability in Precipitable Water Vapor throughout North China from 1979 to 2015

Wang

Tongchuan

Jiageng

et al. 2017

Advances in Meteorology

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“…Spatial and temporal EOFs are obtained from Singular Value Decomposition (SVD) of the PWV matrix. For each given k, the missing data are replaced by the value obtained from the EOFs shown in Equation (6). EOFs are then recomputed for the new matrix with improved approximation of the missing data.…”

Section: Eof-based Interpolationmentioning

confidence: 99%

“…While in-situ measurements, such as radiosonde, sunphotometer and Global Positioning System (GPS), provide reliable water vapor measurements, they are restricted by sparse site distributions [6][7][8][9]. Space-borne satellite observations of water vapor have provided a synoptic view of the atmosphere for over two decades [10,11].…”

Section: Introductionmentioning

confidence: 99%

Geostationary Satellite Observation of Precipitable Water Vapor Using an Empirical Orthogonal Function (EOF) based Reconstruction Technique over Eastern China

et al. 2015

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Water vapor, as one of the most important greenhouse gases, is crucial for both climate and atmospheric studies. Considering the high spatial and temporal variations of water vapor, a timely and accurate retrieval of precipitable water vapor (PWV) is urgently needed, but has long been constrained by data availability. Our study derived the vertically integrated precipitable water vapor over eastern China using Multi-functional Transport Satellite (MTSAT) data, which is in geostationary orbit with high temporal resolution. The missing pixels caused by cloud contamination were reconstructed using an Empirical Orthogonal Function (EOF) decomposition method over both spatial and temporal dimensions. GPS meteorology data were used to validate the retrieval and the reconstructed results. The diurnal variation of PWV over eastern China was analyzed using harmonic OPEN ACCESSRemote Sens. 2015, 7 5880 analysis, which indicates that the reconstructed PWV data can depict the diurnal cycle of PWV caused by evapotranspiration and local thermal circulation.

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“…Both the recording instruments and the gas production system were constructed by the pioneer of upper-air research, William H. Dines. The instrument used fine steel points to scratch the pressure and temperature onto a silver plate; a full description of the Dines recording instrument, known as a 'meteorograph' , can be found in Robinson (1968); the early history of radiosondes is described in Brettle and Galvin (2003).…”

Section: The Use Of Balloons During the Expeditionmentioning

confidence: 99%

Scott's last expedition: the upper air observations

Burton

2006

Weather

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Back to basics: Radiosondes: Part 1 –The instrument

Abstract: (1997) A new gridded radiosonde temperature data base and recent temperature trends. Geophys.

Cited by 31 publications

References 7 publications

Trends and Variability in Precipitable Water Vapor throughout North China from 1979 to 2015

Trends and Variability in Precipitable Water Vapor throughout North China from 1979 to 2015

Geostationary Satellite Observation of Precipitable Water Vapor Using an Empirical Orthogonal Function (EOF) based Reconstruction Technique over Eastern China

Scott's last expedition: the upper air observations

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