Longwave radiation at the ground: IV. Comparison of measurement and calculation of radiation from cloudless skies Public Deposited

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  • On cloudless days in summer, longwave irradiance was measured with a radiometer and was calculated from a radiation chart using records from radiosondes released at regular intervals. The results show that the chart underestimated the longwave flux density at the ground by up to 40W/m^(-2), corresponding to an extra atmospheric emissivity of up to 0.12. The extra emissivity was correlated with turbidity during the day, and on turbid days it showed a diurnal variation with a maximum at noon. It is suggested that emission in the atmospheric window from dust, pollen and spores may account for some of the observed excess.
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  • Dalrymple, G. J., & Unsworth, M. H. (1978). Longwave radiation at the ground: IV. Comparison of measurement and calculation of radiation from cloudless skies. Quarterly Journal of the Royal Meteorological Society, 104, 989-997.
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  • description.provenance : Approved for entry into archive by Digital Production(digitalproduc@gmail.com) on 2010-09-30T18:44:13Z (GMT) No. of bitstreams: 1 Dalrymple_and_Unsworth_Q_J_R_Meteo_Soc_1978_IV.pdf: 633220 bytes, checksum: 7d03d419a338f6f471ac053b6664277e (MD5)
  • description.provenance : Made available in DSpace on 2010-09-30T18:44:13Z (GMT). No. of bitstreams: 1 Dalrymple_and_Unsworth_Q_J_R_Meteo_Soc_1978_IV.pdf: 633220 bytes, checksum: 7d03d419a338f6f471ac053b6664277e (MD5) Previous issue date: 1978
  • description.provenance : Submitted by Eric Vanderwall (ewscanner@gmail.com) on 2010-09-23T18:32:02Z No. of bitstreams: 1 Dalrymple_and_Unsworth_Q_J_R_Meteo_Soc_1978_IV.pdf: 633220 bytes, checksum: 7d03d419a338f6f471ac053b6664277e (MD5)

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