In 1989, IIP intends to make two 

 procedural changes to refine its 

 ability to predict iceberg deteriora- 

 tion. The deterioration model will 

 reset the iceberg size to the 

 maximum waterline length for the 

 reported size every time the 

 iceberg is sighted. This will be a 

 more conservative method in 

 handling the ever-increasing 

 quantity of iceberg data. Sec- 

 ondly, IIP will reduce the percent 

 melt at which icebergs can be 

 deleted from the database. For all 

 icebergs, except those setting the 

 "limits of all known ice", 125% will 

 be the deletion criteria; for limit- 

 setting icebergs 150%. These 

 new deletion criteria were based 

 on several interdependent factors: 

 the improved estimate of iceberg 

 deterioration provided by the new 

 environmental inputs; the more 

 conservative method in handling 

 iceberg resights; and the planned 

 improvements in iceberg drift 

 predictions. 



SUMMARY 



IIP took a proactive approach to 

 better the predictive skill of its 

 iceberg drift and deterioration 

 models in 1988. By concentrating 

 on improvements to the environ- 

 mental inputs, IIP reduced errors 

 in its deterioration predictions. As 

 an informed FLENUMOCEANCEN 

 user, IIP was able to recognize 

 ways in which it could enhance the 

 quality of its environmental inputs 

 by expanding its remote oceano- 

 graphic data collection capabili- 

 ties. Because technological 

 advances have facilitated rapid 

 advances in environmental 

 modelling, IIP expects that the 

 next significant improvements to 

 its input will occur by 1993. 



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