Date
|
Model
Run
|
Change
|
2009-Present
Developmental/Experimental/Operational Run
Changes |
|
|
|
ALASKA/Hawaii CMAQ RUN |
March 21, 2017 |
12 UTC |
|
August 12, 2014 |
12 UTC |
|
May 1, 2014 |
00 UTC |
|
October 18, 2011 |
12 UTC |
- The North
American Model (NAM)
was upgraded to the National Environmental Modeling System (NEMS)
framework Non-hydrostatic Multi-scale Model (NMMB). The NAM
provides
hourly meteorological predictions at 12 km to drive CMAQ.
|
June 1, 2011 |
00 UTC |
|
July 6, 2010
|
12 UTC
|
- Error found where particle Aitken number concentration
became zero. Correction to the post-processing made to handle
zero values.
|
May 25, 2010
|
12 Z
|
Implementation of NAM-CMAQ V4.6 Alaska NCO Experimental Forecasts
- 48 hour forecasts at 06 and 12 UTC
- 6 hour cycling at 18 and 00 UTC
- 12 km CMAQ Lambert Conformal native horizontal grid
|
March 2, 2010
|
12 Z
|
More Realistic
Alaska Emissions
upgrades provided by NOAA/OAR/ARL:
1. Canadian anthropogenic emissions are processed and included in the
new area and mobile emissions;
2. A new USGS-based land use file is prepared for PREMAQ;
3. New biogenic emission factor file (B3GRD) that allows BIES to
calculate biogenic emissions from Alaska and three Canadian provinces;
4. A new OCEAN file for sea-salt emissions based on land use file and
additional manual tuning for inland lakes;
5. An updated point source reflecting 2005 NEI and 2008 CEM data;
|
September 2, 2009
|
12 Z
|
NAM-CMAQ V4.6 Alaska CB05-AERO-4 Daily AQF 48
hour model predictions begun.
- Domain size: 200x164x22, Lambert Secant Conformal
projection,
- Corner points:
- SW:52.945;-166.534
- SE: 52.945;-130.666
- NW:69.377;-179.822
- NE: 69.377;-117.378
- The
CB05
chemical mechanism with more detailed
Volatile Organic Compound (VOC) chemistry was implemented.
- A
harmonized version of the AERO-4
aerosol chemistry mechanism was turned on. The harmonized
NOx night time chemistry is configured with heterogeneous pathways
turned off but
gas-phase N205 hydrolysis turned on. This was done to minimize
the impact of aerosol chemistry on the ozone forecast.
- Sea
salt emissions were included in CMAQ.
- Point, area and mobile
emissions were upgraded based upon recent EPA
National Emissions Inventory
(NEI, 2005) and
then projected for the
current year. EGU sources use 2007 CEM
data projected for 2009. These emissions are
also
consistent with the CB05 chemical mechanism.
- Biogenic Sources are currently set to Alaska
land-use type surrogates for Canadian part of domain.
- Lateral Boundary Conditions: Running with
static boundary conditions used for CONUS. Testing boundary conditions
generated from GEOS-5 -Chem global
model
|
|
|
HAWAII CMAQ RUN
|
March 23,
2010
|
12 UTC
|
NAM-CMAQ Hawaii
CB05/AERO-4 predictions moved to NCO experimental run slot:
- 48 hour forecasts at 06 and 12 UTC
- 4x/day cycling
|
February 2, 2010
|
12Z |
NAM-CMAQ Hawaii CB05-AERO-4 Daily AQF 48 hour model
predictions begun:
- Domain size: 80x52x22, Lambert Secant Conformal projection,
- Corner points:
- SW:17.61;-162.080078
- SE: 17.609863;-152.914551
- NW:23.325584;-162.25
- NE: 23.325447;-152.744284
- The
CB05
chemical mechanism with more detailed
Volatile Organic Compound (VOC) chemistry was implemented.
- A
harmonized version of the AERO-4
aerosol chemistry mechanism was turned on. The harmonized
NOx night time chemistry is configured with heterogeneous pathways
turned off but
gas-phase N205 hydrolysis turned on. This was done to minimize
the impact of aerosol chemistry on the ozone foreceast.
- Sea
salt emissions were included in CMAQ.
- Point, area and mobile
emissions were upgraded based upon recent EPA
National Emissions Inventory
(NEI, 2005) and
then projected for the
current year. Point EGU sources use 2007 CEM
data. These emissions are
also
consistent with the CB05 chemical mechanism. More
detailed Hawaii emission information is described by Daniel Tong, ARL, here.
- Lateral
Boundary Conditions:
Running with climatologically averaged ozone from the Hilo ozonesonde
site with GEOS5-Chem global model climatological precurser
species.
|