AeroCom

-> Aerosol Comparisons between Observations and Models

 

Protocol Monthly Output (AeroCom Phase I, Experiments A,B,PRE)

The Variable name is a combination of Parameter name and Species name
(e.g. WET_DUST, WET_SS, WET_BC…).
Species names: DUST, SS, BC, POM, SO4, AER(=all aerosol), AERN(=aerosol number), METEO(=Meteorological)

Grid resolution if not mentioned otherwise LATxLON, thus 2 dimensional in time
Blue fields indicate 3D fields LATxLONxLEV

MONTHLY OUTPUT	each Species	total	Remark	proposed unit	Parameter Name
Monthly ( sum over all time steps )
column wet deposition for each species	X		sum over month	[kg/m2/month]	WET
surface turbulent dry deposition for each species	X		sum over month, without sedementation	[kg/m2/month]	TUR
surface sedimentation for each species	X		sum over month	[kg/m2/month]	SED
source flux for each species	X		surface emissions and possibly production at altitude integrated to 2D field; sum over month / for SEA SALT flux is given just for particles below 20 um at 80 r.H.	[kg/m2/month]	EMI
Monthly (mean  from all time steps, vertically resolved, except surface pressure)
dry mass loading for each species	X		3D mean of any grid box in month	[kg/m2]	LOAD3D
number loading for each species	X		since modal schemes output rather this info and with regard to indirect effect	[#/m2]	LOAD3D
dry mass fraction below 0.50um for each species	X		dry radii	[kg/m2]	LOAD053D
dry mass fraction above 1.25um for each species	X		dry radii	[kg/m2]	LOAD1253D
aerosol water mass				[kg/m2]	AERH2O3D
effective dry radius		X	see DAILY OUTPUT for definition	[µm]	ER3D
effective radius for dry radii below 0.50um		X	see DAILY OUTPUT for definition	[µm]	ERLT053D
effective radius for dry radii above 0.50um		X	see DAILY OUTPUT for definition	[µm]	ERGT053D
temperature			3D field	[K]	TEMP3D
surface pressure			--  2D field  --	[hPa]	PRES
relative humidity			3D field all sky relative humidity; RH= f(ave(T),ave(q))	[%]	RH3D
precipitation rate			3D field	[mm/day]	PREC3D
Monthly (mean fraction  from all time steps, vertical resolved for relative humidity)
time fraction with relative humidity between 30-70% r.h.			3D field	[%]	RH30-703D
time fraction with relative humidity between 70-85% r.h.			3D field	[%]	RH70-853D
time fraction with relative humidity between 85-95% r.h.			3D field	[%]	RH85-953D
time fraction with relative humidity between 95-423 r.h.			3D field	[%]	RH95-1063D
time fraction with wind speed >5 m/s (at 10 m height)			2D field	[%]	WSGT53D
time fraction with wind speed >8 m/s (at 10 m height)			2D field	[%]	WSGT83D
time fraction with wind speed >10 m/s (at 10 m height)			2D field	[%]	WSGT103D
Monthly (mean for cloudfree fraction, data taken at local noon, use cloud cover fraction in each grid box as defined by radiation code to mask data, see also DAILY OUTPUT, vertical resolved)			use LOCAL NOON time below !!
cloudfree fraction in month			3D field as used in models radiation code	[%]	CFREE3D
optical depth at 550nm for each species in cloudfree area	X		3D field	[]	OD5503D
absorption at 550nm for each species in cloudfree area	X		3D field	[]	ABS5503D
added in July 2003:
Monthly (sum or mean from all time steps)
sulfate production from any gas phase reactions		x	3D sum of any grid box in month	[kgS/m2]	CHEGP3D
sulfate production from any liquid phase reactions		x	3D sum of any grid box in month	[kgS/m2]	CHEAQP3D
direct sulfate emissions		x	2D sum of any grid box in month	[kgS/m2]	EMI
DMS emissions		x	2D sum of any grid box in month	[kgS/m2]	EMI
SO2 emissions		x	2D sum of any grid box in month	[kgS/m2]	EMI
H2S emissions		x	2D sum of any grid box in month	[kgS/m2]	EMI
Stratiform wet deposition	x		2D sum of any grid box in month	[kg/m2]	WETST
Convective wet deposition	x		2D sum of any grid box in month	[kg/m2]	WETCV
Cloud liquid water content		x	3D mean of any grid box in month	[kg/m2]	LWQ3D
ADDITIONAL GRID INFO	each Species	total	Remark	proposed unit
Grid area		x	Grid area per grid box	[m2]	AIRE
Vertical grid info (sigma levels, hybrid coordinate coefficients)			for reconstruct pressure fields, budgets etc

 

AEROCOM
is an international
science initiative
on aerosols and climate

supported by
EU Framework programmes
ACTRIS
MACC-II
EUCAARI
PHOENICS


Norw. Met Office
ESA-cci
Max-Planck Ges.
NASA
French CNES