4th-5th February 2008.
Present: Brice BARRET (CNRM/LA), Idir BOUARAR (SA), Claire DELON (LA), Bruno GUILLAUME (LA), Beatrice JOSSE (CNRM), Kathy LAW (SA), Celine MARI (LA), Vincent-Henri PEUCH (CNRM), Marielle SAUNOIS (LA), Fabien SOLMON (LA), Jason WILLIAMS (KNMI), Xin YANG (UCAM)
A variety of simulations have
been performed for 2000/2003 by various models using the global emission
datasets provided by LA. A main finding is that CO is too low in the NH.
Therefore it was agreed to redefine the simulations for 2006 in terms of the
application of the datasets and the ‘baseline’ run. The AMMA BB emissions for
2006 will now only be applied over
For a good comparison it is important that all
models adopt the following emissions for the background conditions otherwise
the intercomparison may suffer from complications
Retro 2003 anthropogenic
emissions (available from the GEIA or RETRO websites) and GFEDv2 2006 input
files for the globe except for over
W – 40°
E, 35°
S – 40°
N). If you need emissions which are segregated by sector then refer to the RETRO website.
Soil NOx emissions: use Yienger and Levy (included in GEIA). For isoprene also use GEIA. Biogenic CO and ocean CO should be also be included to achieve accurate global emission totals.
For the application of burning heights the consensus is that it is model specific due to differences in the vertical resolution. For the application of the heights use the GBA recommendations given on the AMMA emission website. Alternatively use the IPCC conventions.
NB : the
2000 meteorology run has been brought forward to be able to address an
outstanding deliverable which is late and therefore must be given priority!!
Expt A LA 2006 emissions for both the biomass burning and fossil/biofuel (JRC corr.), monthly averaged datasets. Meteorology: 2000
Expt B As for Expt A except Meteorology 2006
Expt C LA emissions 2000 (GBA) emissions for both biomass burning and fossil/biofuel monthly averaged with Meteorology 2000
Expt D LA emissions 2006 (JRC corr.) daily, adopt start file from Expt A for May and only run for June-July-August (the AMMA campaign period)
For those models not including the passive tracers in the full chemistry run:
Expt E 5 tracers (20 days lifetime), 5 box zones (see previous description on the KNMI website for a definition of the regions) plus the stratospheric tracer. Meteorology 2006
2006 output for all experiments
(see final page) in NetCDF format except for profiles. Put
Timeline:
· Experiment(s) A and B (and E) uploaded to the site by May 2008. Also passive tracer fields if these require separate model runs. It should be noted that existing passive tracer experiments for regions 1-5 can be used from old runs if necessary (except for the Stratospheric tracer due to an issue with the method for defining the troposphere – see below).
· Distributed analysis of model output by mid-june where there will be a meeting to discuss findings and strategy. Identify a possible overlap with meso-scale modelers to define strategy and focus for WP 2.4 collaborations (and also 1.1.2).
· Presentations of results from experiment(s) A and B (and E) to be presented at the IGAC meeting in September 2008.
· Experiments B, C, D (and F) to be uploaded at the end of September.
· Distributed analysis of model output by mid-November where there will be a meeting to discuss findings and strategy of all model runs/comparisons (joint meeting with 1.1.2).
· Report/Paper writing: end 2008-spring 2009.
Practical Action points:
· Dissemination of the satellite overpass subroutine to the other groups for both instantaneous and monthly mean output (JW).
· Dissemination of extended ozone sonde station list to address the issue of sampling frequency (JW).
· NetCDF versions of the LA emissions on a 0.5° x 0.5° grid will be uploaded on the LA site (JW will send to BG). Ideally, this ensures that no pre-processing errors occur between groups.
·
Bruno will also upload a distribution map for
· PV subroutine will be disseminated to all groups that need it (BJ)
· Xin will converse with Peter regarding an updated definition of the tropopause with respect to the stratospheric tracer. (XW)
· Dissemination of separate soil NOx, biogenic CO and ocean CO to Xin (JW) – These are available on the GEIA website under the POET inventory.
Optional inclusions to runs:
These can either be bundled into the other experiments or conducted separately although priority should be given to the inter-comparison experiments.
· Tagged CO tracers from
· New tracer from Asia
and/or
· Scaling of emissions by +- 20% to investigate effect of global O3 budget.
· Use of LA 2030 african datasets for future runs.
WP 4.1.3 needs to strengthen ties with other WP’s as written in the project. This takes the form of either convection studies or global transport of precursors/O3/CO etc.
For WP 1.1.2 the passive tracer results (with additional tracers as listed in the optional inclusions) will be exploited to investigate the long-range transport issue.
If there is direction given by the meso-scale modelers in WP 2.4.4 then additional passive tracers (with shorter lifetimes) could be included for the AMMA period as in the meso-scale models. Members will be invited to the June meeting to discuss overlap/ideas and define a strategy as to how this can work.
The subject of Lightning NOx could be focal point (as the CTM’s use a variety of methods for this).
The uploaded data will be used to focus on a number of scientific questions. One group/participant will take the lead on one of the following aspects.
(i)
Regional effects over
(a) Role of convection, LiNOx etc, comparison with Flight data (Idir/Kathy)
(b) Biogenics/Isoprene effects (Jason)
(c) Wet Deposition – IDAF (Fabian)
(ii) Import/Export from the African Continent (vs e.g. global ozone sondes, satellite data) (Brice)
(iii) Tropospheric O3 comparisons with OMI to determine a seasonal signal (Vincent-Henri, Beatrice)
(iv) Transport diagnostics using the passive tracers (Xin)
Focus by Bruno/Kathy Lio. ?? BC and OC comparisons ?? (please indicate a topic of interest).
Output
o
between
20 S and 40 N (or shorter if your model has a more limited latitudinal domain)
o
representative
of (averaged over) 2W-6E (covering the
aircraft flights)
o
mixing
ratios for AT, ST, CO, isoprene, HCOH, O3, NOx (NO+NO2), HNO3, PAN, H2O2, and
OH, all aerosol concentrations & optical depths
This corresponds to the “cross”-output of the
AMMA MIP for dynamical models, see http://amma-mip.lmd.jussieu.fr/
This can be provided on pressure or model
levels. In case of model levels please also provide the pressure variable.
For 2006 6 hourly output surface maps (not
monthly averaged).
Additional
output for 2006:
Files with aircraft location (longitude (degr
E), latitude (degr N), pressure (hPa) and time (hours & minutes UT) are
already available for the DLR Falcon and the French ATR and Falcon aircraft, the Geophysicae and the British BAE
aircraft at http://www.knmi.nl/samenw/campaign_support/AMMA/TRACKDATA/index.html
It is planned that these files are complemented
with T (K), U-wind (m/s), V-wind (m/s), water vapour mixing ratio (ppmv) or RH
(%), so that the representativity of the model simulated meteorological fields
can be assessed. These fields can also be used to define the troposphere during
post-processing.
Requested model output at these points: date+UT
(minutes), T(K), U, V, RH, H2O, O3, NO2, NO, HNO3, OH, CO, AT, ST, isoprene, …
Add the output as extra columns to the aircraft
location files.
Please include also
pressure (hPa) in the model output!
·
For
Malindi there is presently only 1 sounding available ( 20060104 9h52 UT).
·
The
date list for
·
The
date list for
http://www.knmi.nl/samenw/campaign_support/AMMA/WP413/cotonou.txt
Background information about the
It has been agreed that the number of stations
needs to be expanded to avoid statistical problems introduced when using only a
few soundings.
A table with detailed information per station was provided by Fabien Solmon. See
http://www.knmi.nl/samenw/campaign_support/AMMA/WP413/IDAFsite.pdf\
For CTM with AEROSOLS:
For aerosol models nephelometer data and GRIMM aerosol
size data are also available at Nangatchori. See datelist of observations (excel) provided
by Cathy Liousse: http://www.knmi.nl/samenw/campaign_support/AMMA/WP413/EOP-chemNangatchori.xls
For 2000/2003 a
reduction of the number of sites is possible.
Investigate what optical properties are used to make this calculation in
the models.