TCCON Philippines: First Measurement Results, Satellite Data and Model Comparisons in Southeast Asia
Centre for Atmospheric Chemistry, School of Chemistry, University of Wollongong, Northfields Ave., Wollongong, NSW 2522, Australia
Satellite Observation Center, National Institute for Environmental Studies (NIES), Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan
California Institute of Technology, Pasadena, CA 91125, USA
Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan
Institute of Environmental Science and Meteorology, University of the Philippines Diliman, Quezon City 1101, Philippines
Also Fellow at: Oscar M. Lopez Center for Climate Change Adaptation and Disaster Risk Management Foundation, Inc., Philippines
Author to whom correspondence should be addressed.
Received: 8 September 2017 / Revised: 11 November 2017 / Accepted: 22 November 2017 / Published: 28 November 2017
The Total Carbon Column Observing Network (TCCON) is a global network dedicated to the precise and accurate measurements of greenhouse gases (GHG) in the atmosphere. The TCCON station in Burgos, Ilocos Norte, Philippines was established with the primary purpose of validating the upcoming Greenhouse gases Observing SATellite-2 (GOSAT-2) mission and in general, to respond to the need for reliable ground-based validation data for satellite GHG observations in the region. Here, we present the first 4 months of data from the new TCCON site in Burgos, initial comparisons with satellite measurements of
and model simulations of
. A nearest sounding from Japan’s GOSAT as well as target mode observations from NASA’s Orbiting Carbon Observatory 2 (OCO-2) showed very good consistency in the retrieved column-averaged dry air mole fractions of
, yielding TCCON - satellite differences of 0.86 ± 1.06 ppm for GOSAT and 0.83 ± 1.22 ppm for OCO-2. We also show measurements of enhanced
, probably from East Asia. GEOS-Chem model simulations were used to study the observed
variability. However, despite the model capturing the pattern of the
variability, there is an obvious underestimation in the
magnitude in the model. We conclude that more measurements and modeling are necessary to adequately sample the variability over different seasons and to determine the suitability of current inventories.
This is an open access article distributed under the Creative Commons Attribution License
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Velazco, V.A.; Morino, I.; Uchino, O.; Hori, A.; Kiel, M.; Bukosa, B.; Deutscher, N.M.; Sakai, T.; Nagai, T.; Bagtasa, G.; Izumi, T.; Yoshida, Y.; Griffith, D.W.T. TCCON Philippines: First Measurement Results, Satellite Data and Model Comparisons in Southeast Asia. Remote Sens. 2017, 9, 1228.
Velazco VA, Morino I, Uchino O, Hori A, Kiel M, Bukosa B, Deutscher NM, Sakai T, Nagai T, Bagtasa G, Izumi T, Yoshida Y, Griffith DWT. TCCON Philippines: First Measurement Results, Satellite Data and Model Comparisons in Southeast Asia. Remote Sensing. 2017; 9(12):1228.
Velazco, Voltaire A.; Morino, Isamu; Uchino, Osamu; Hori, Akihiro; Kiel, Matthäus; Bukosa, Beata; Deutscher, Nicholas M.; Sakai, Tetsu; Nagai, Tomohiro; Bagtasa, Gerry; Izumi, Toshiharu; Yoshida, Yukio; Griffith, David W.T. 2017. "TCCON Philippines: First Measurement Results, Satellite Data and Model Comparisons in Southeast Asia." Remote Sens. 9, no. 12: 1228.
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