AeroCom

-> Aerosol Comparisons between Observations and Models

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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