Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
Environmental Modeling Center

 

Polar: Time Table for Product Availability

These times of availability are approximate. Polar is not an operational server. Please see the
NWS Web distribution disclaimer for more about what this entails.   One feature of importance to most users is that the system does not have 24x7 support.  
For operational availability of the information which is noted as operational on http://polar.ncep.noaa.gov/mmab/products.shtml.

Notes for best response

  • Open only 1 connection at a time.  Some ftp software, command line ftp from Windows 98 and XP is known to have this problem, produces failures if you attempt to open multiple connections.  Even if this isn't the case, there is finite bandwidth to polar, and by opening multiple connections you slow the transfer rate to yourself.
  • Retrieve data only after it can be expected to be updated -- see the table below for times in UTC (equivalent to GMT.  Eastern Standard Time is 5 hours earlier, Eastern Daylight Time is 4 hours earlier.  So 00 UTC is 7 PM EST and 8 PM EDT.) This will prevent a need for multiple transfers.  Please note that the availability times are approximate and delays of minutes to half an hour are not uncommon.  Delays over an hour are rare.
  • Retrieve the smallest data files that serve your needs.  If, for example, you are only interested in significant wave heights for the Western North Atlantic ocean, it is most efficient to retrieve wna.HTSGW.grb, at 2.1 Mbytes, rather than all fields for that domain, 29.4 Mb.  Only you can judge what best fills your needs.




Product Availability Time Table


Times in the table are approximate times of availability in UTC.  Eastern Standard Time is 5 hours earlier; Eastern Daylight Time is 4 hours earlier.  So 00 UTC is 7 PM EST and 8 PM EDT.


Model or Analysis Cycle
Produce Suites
00 UTC
06 UTC
12 UTC
18 UTC
Vessel Icing Model
5:10
11:10
17:10
23:10
Coastal Fog Model
5:15
XXXX
17:15
XXXX
Wave Model
5:45
11:45
17:45
23:45
Regional Ocean Model
6:00
XXXX
XXXX
XXXX
Wind Analysis
7:10
11:10
18:10
33:10*
Ocean Fog Model
7:10
XXXX
18:10
XXXX
Sea Ice Drift Model
9:45
XXXX
XXXX
XXXX
Gulf Stream Finder
10:30
XXXX
XXXX
XXXX
Sea Ice Analysis
14:50
XXXX
XXXX
XXXX
SST Analysis
22:45
XXXX
XXXX
XXXX


* The 18 UTC cycle of wind analysis is available at about 9:10 UTC on the following day.



Return to main MMAB page
Return to full product index

Last Modified 23 January 2004


NOAA/ National Weather Service
National Centers for Environmental Prediction
Environmental Modeling Center
W/NP 21, NCWCP
5830 Unversity Research Court
College Park, Maryland 20740
Page Author: EMC Webmaster
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities
Page last modified: Tuesday, 29-Jul-2008 17:25:24 UTC