Validation of Stratospheric and Mesospheric Ozone Observed by Smiles from International Space Station : Volume 6, Issue 2 (18/03/2013)

By Kasai, Y.

Book Id: WPLBN0003992536
Format Type: PDF Article :
File Size: Pages 78
Reproduction Date: 2015

Title:	Validation of Stratospheric and Mesospheric Ozone Observed by Smiles from International Space Station : Volume 6, Issue 2 (18/03/2013)
Author:	Kasai, Y.
Volume:	Vol. 6, Issue 2
Language:	English
Subject:	Science, Atmospheric, Measurement
Collections:	Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic Publication Date:	2013
Publisher:	Copernicus Gmbh, Göttingen, Germany

Member Page:	Copernicus Publications
Citation APA MLA Chicago Sugita, T., Sato, T. O., Boone, C., Sagawa, H., Murtagh, D., Irimajiri, Y.,...Vogt, P. (2013). Validation of Stratospheric and Mesospheric Ozone Observed by Smiles from International Space Station : Volume 6, Issue 2 (18/03/2013). Retrieved from http://gutenberg.cc/

Description
Description: National Institute of Information and Communications Technology (NICT), Koganei, Tokyo, Japan. We observed the diurnal variation of ozone (O₃) in the vertical region between 250 and 0.0005 hPa (~12–96 km) using the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) on the Japanese Experiment Module (JEM) of the International Space Station (ISS) between 12 October 2009 and 21 April 2010. The new 4 K superconducting heterodyne receiver technology of SMILES allowed us to obtain a one order of magnitude better signal-to-noise ratio for the O₃ line observation compared to past spaceborne microwave instruments. We assessed the quality of the vertical profiles of O₃ in the 100–0.001 hP (~16–90 km) region for the SMILES NICT Level 2 product version 2.1.5. The evaluation is based on four components; error analysis; internal comparisons of observations targeting three different instrumental setups for the same O₃ 625.371 GHz transition; internal comparisons of two different retrieval algorithms; and external comparisons for various local times with ozonesonde, satellite and balloon observations (ENVISAT/MIPAS, SCISAT/ACE-FTS, Odin/OSIRIS, Odin/SMR, Aura/MLS, TELIS). SMILES O₃ data have an estimated absolute accuracy of better than 0.3 ppmv (3%) with a vertical resolution of 3–4 km over the 60 to 8 hPa range. The random error for a single measurement is better than the estimated systematic error, being less than 1, 2, and 7%, in the 40–1, 80–0.1, and 100–0.004 hPa pressure region, respectively. SMILES O₃ abundance was 10–20% lower than all other satellite measurements at 8–0.1 hPa due to an error arising from uncertainties of the tangent point information and the calibration problem for the intensity of the spectrum. The non sun-synchronous orbit of the ISS allowed us to observe O₃ at various local times. A two month period is required to accumulate measurements covering 24 h in local time. However such a dataset can also contain variation due to dynamical, seasonal, and latitudinal effects.

Summary
Validation of stratospheric and mesospheric ozone observed by SMILES from International Space Station

Excerpt
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