Articles | Volume 9, issue 1
Atmos. Meas. Tech., 9, 281–293, 2016
https://doi.org/10.5194/amt-9-281-2016
Atmos. Meas. Tech., 9, 281–293, 2016
https://doi.org/10.5194/amt-9-281-2016
Research article
27 Jan 2016
Research article | 27 Jan 2016

Characterization of downwelling radiance measured from a ground-based microwave radiometer using numerical weather prediction model data

M.-H. Ahn et al.

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Cited articles

Ahn, M.-H., Han, D., Won, H. Y., and Morris, V.: A cloud detection algorithm using the downwelling infrared radiance measured by an infrared pyrometer of the ground-based microwave radiometer, Atmos. Meas. Tech., 8, 553–566, https://doi.org/10.5194/amt-8-553-2015, 2015a.
Ahn, M.-H., Lee, S. J., and Kim, D.: Estimation of uncertainties in the spectral response function of the water vapor channel of a meteorological imager, Third International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2015), Proc. SPIE 9535, https://doi.org/10.1117/12.2192518, 2015b.
Candlish, L. M., Raddatz, R. L., Asplin, M. G., and Barber, D. G.: Atmospheric temperature and absolute humidity profiles over the Beaufort Sea and Amundsen Gulf from a microwave radiometer, J. Atmos. Ocean. Tech., 29, 1182–1201, 2012.
Cadeddu, M. P. and Turner, D. D.: Evaluation of water permittivity models from ground-based observations of cold clouds at frequencies between 23 and 170 GHz, IEEE T. Geosci. Remote, 49, 2999–3008, 2011.
Cadeddu, M. P., Peckham, G. E., and Gaffard, C.: The vertical resolution of ground-based microwave radiometers analyzed through a multiresolution wavelet technique, IEEE Trans. Geo. Remote Sens., 40, 531–540, 2002.
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Short summary
A process to characterize a ground-based microwave radiometer by comparing measured radiance with a reference data, prepared by the radiative transfer simulation with the input of temperature and humidity profiles from NWP model is introduced. When the data affected by clouds and erroneous absolute calibration is compared, the data show a better than 0.97 and 0.5 K of regression coefficient and bias, respectively. However, there is unresolved discrepancy of about 2 K at the lower frequencies.