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Hi, I just wanted to know if the following command gives me volume-weighted mean over the 3D ocean volume for temperature field. As you know that the volume of each grid-cells is its area, computed from its latitude and longitude range multiplied by its vertical extent, computed from its depth range. So for volume-weighted mean over 3D ocean I am doing as follows: OceanMaeanTemp=temp[x=@ave,y=@ave,z=@ave,d=1] Thanks, Mubashar > Date: Thu, 14 Feb 2013 13:15:20 +0100 > From: hein.zelle@xxxxxxxxxxxxx > To: couragetoknowgc@xxxxxxxxxxx > Subject: Re: [ferret_users] > > Dear Mubashar, > > > Thanks for the idea. Could you please have a look on figure 2 of the following paper regarding volume mean ocean temperature change: > > http://onlinelibrary.wiley.com/doi/10.1029/2010GL045507/pdf > > > > What If for the Z component I compute definite integral or sum as: > > I really couldn't tell you - it depends on what you want to calculate! > I think it's best if you write down the equation you want on paper > (mathematically), then translate it into ferret code and post to the > list to ask for help. > > At the moment, I have no exact idea what you're trying to calculate, so I > can't say if the code you write is correct or applicable. > > Kind regards, > Hein Zelle > > > -- > > Dr. Hein Zelle > Senior consultant meteorology & oceanography > BMT ARGOSS > > Tel: +31 (0)527-242299 > Fax: +31 (0)527-242016 > E-mail: hein.zelle@xxxxxxxxxxxxx > Website: www.bmtargoss.com > > BMT ARGOSS b.v. > Voorsterweg 28, 8316 PT Marknesse, the Netherlands > Postal address: P.O. Box 61, 8325 ZH Vollenhove, the Netherlands > > Registered in The Netherlands, Registered no. 39060160. > > Unless otherwise agreed by BMT ARGOSS in writing, all work, > services, goods or products supplied by BMT ARGOSS shall be subject > to and governed by BMT ARGOSS' own terms and conditions which are > available for inspection from BMT ARGOSS on request. > > E-mail confidentiality notice and disclaimer: > The contents of this e-mail and any attachments are intended for the > use of the mail addressee(s) shown. If you are not that person, you > are not allowed to read it, to take any action based upon it or to > copy it, forward, distribute or disclose the contents of it and you > should please delete it from your system. BMT ARGOSS does not accept > liability for any errors or omissions in the context of this e-mail or > its attachments which arise as a result of internet transmission, nor > accept liability for statements which are those of the author and > clearly not made on behalf of BMT ARGOSS. |