Ground based GC, Picarro and O 3 measurements on Manus Island Neil Harris, Heather Holland, Andrew Robinson Geraint Vaughan, Hugo Ricketts, Richard Newton,

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Presentation transcript:

Ground based GC, Picarro and O 3 measurements on Manus Island Neil Harris, Heather Holland, Andrew Robinson Geraint Vaughan, Hugo Ricketts, Richard Newton, Charles Chemel Mae Chu

ARM site (many thanks) 2.1°S, 147°E February 1 – 24, 2014 O 3 Peco CO 2, CH 4, COPicarro G2401 VSLSμ-Dirac GC-ECD Ground based measurements on Manus Island

Daytime maxima No well defined diurnal cycle DryVery Wet TECO O 3 measurements on Manus Island Time for this plot is LT

Times are all UT (add 10 hours for local time) Calm nights Ground meteorology on Manus Island

Times are all UT (add 10 hours for local time) Ground meteorology on Manus Island

Picarro measurements on Manus Island Times are all UT (add 10 hours for local time)

median ppm Picarro measurements on Manus Island Times are all UT

Few elevated values at higher wind speed CO2, CH4 vs wind speed

Middle period locally quiescent with more dispersion around Manus Colours are on a log scale so blue area is most important NAME particle density maps for 12 day back- trajectories: 0-100m, UT Feb 10Feb 2Feb 22

median ppm Spikes from airport activity Picarro measurements on Manus Island Times are all UT

Dirac VSLS measurements on Manus Island Times are all UT

median 0.3 ppt median 0.17 ppt median 0.81 ppt median 0.52 ppt Dirac VSLS measurements on Manus Island

Calm nights, strong diurnal variability in 1 st half of campaign Strong local influence, including evidence of local VSLS sources Change in met conditions from ~12-Feb, fewer calm nights Analysis on-going Data do not seem to be on BADC yet will be sorted ask directly in short term Acknowledgements: ARM Papua New Guinea Weather Service (Hymson Waffi and staff) LANL NERC Summary

High resolution UKCA modelling UKCA at N320: 0.37° (lat) x 0.56° (long) with chemistry and idealised tracers run in process for Nov 2013 to Mar 2014 – these results from 2005 as example Maria Russo, James Keeble

High resolution UKCA modelling UKCA at N320: 0.37° (lat) x 0.56° (long) with chemistry and idealised tracers run in process for Nov 2013 to Mar 2014 – these results from 2005

Calm nights, strong diurnal variability in 1 st half of campaign Strong local influence, including evidence of local VSLS sources Change in met conditions from ~12-Feb, fewer calm nights Analysis on-going Data do not seem to be on BADC yet will be sorted ask directly in short term Acknowledgements: ARM Papua New Guinea Weather Service (Hymson Waffi and staff) LANL NERC Summary