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Great Lakes Ice Model (GLIM): Developing Great Lakes Ice Model (GLIM) in Lake Erie using the CIOM (Coupled Ice-Ocean Model) . Jia Wang (NOAA GLERL) George Leshkevich, David Schwab, Ann Clites ( NOAA GLERL ) Haoguo Hu, Dima Beletsky ( CILER, UoMich ),
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Jia Wang (NOAA GLERL)
George Leshkevich, David Schwab,
Ann Clites (NOAA GLERL)
Haoguo Hu, Dima Beletsky
Sponsors: NOAA, GLERL with help of USCG
—Need lake ice coupled to an hydrodynamic-sediment model
—Need hydrodynamic-ice circulation model
—Need lake ice model to predict radiation/nergy balance/feedback to the atmosphere, and lake water level (Assel, Quinn&Sellinger 2004)
Atmosphere, hydrosphere (hydrodynamics, lake ice, biosphere, and lithosphere (land processes, hydrology, coastal erosion)
—Need lake ice component
Natural Climate Teleconnection PatternsSea/lake ice as indicator of climate changes: NAO/AO, ENSO/ PNA/PDO? Which is statistically significant?
Wang et al. (1994a,b; 1995)—ENSO and NAO: 1953-91
Mysak et al (1996)—NAO&ENSO:72/73; 82/83; 91/92
Wang and Ikeda (2000)—AO&ASIO
Wang and Ikeda (2001) —Regional and seasonal persp.
Wang et al. (2005) —Arctic climate feedback loop
Assel et al. (2003)—Recent trends
Rodionov and Assel (2003)—Winter severity
March 15, 1992: NAO+& SO- (El Nino) March 15, 2001: NAO-&SO+ (La Nino)
There were 13 winters with anomalous high ice cover( > mean+0.7*STD=69.4)
19631967 19721977197819791981 19821985 1986 19941996 2003
(blue are –AO yrs)
And also 13 winters with anomalous low Ice Cover (< mean-0.7*STD=40.01)
1964 1966 196919761983 1987 1995 19981999 2000 2001 2002 2006
(Yellow are El Nino yrs)
We found -AO signal in the high ice cover winters and El Nino signal in the low ice cover winters
1. POM (Mellor 2000)
2. Multicategory sea ice model (Yao et al., 2000; Wang et al. 2002, 2005, 2008) based on: two-layer ice thermodynamics with 1-layer snow, ice dynamics with viscous-plastic rheology
3. 2-km in Lake Erie similar to Schwab’s GLOFS
4. 22 vertical sigma layers.
5. Daily atmospheric forcing from NCEP/NCAR daily forcing fields (air temperature and humidity at 2m, wind at 10m),solar radiation and air longwave radiation
6. Initial (T/S) fields from measurements
Stations 45005, 45132, and 45142 are shown on the map, but not in the table.
These are meteorological stations maintained by either the National Bata Buoy
Center (45005) or by Environment Canada (45132 and 45142). (
+ NDBC Eastern Great Lakes Marine Data web page)
From Dima Beletsky
Hourly forcing in 2004/05