All, This might be my fault. I have no idea how this particular qpack-case works but there was an overhaul in the design of the Jacobians in ARTS last year that made their calculation less forced and more theoretical (i.e., the jacobian before was from partial perturbations but it is now from direct derivation as much as possible). For the wind field this means that the Jacobian is calculated based on the derivative of the transmission with respect to frequency before being scaled back to wind field parameters.
There could be edge-cases that I have miss-implemented. It sounds like this at the least. Could you explain your test case to me so that I can look into fixing the problem? What is the atmospheric geometry and what is the a priori wind field? What kind of results do you expect? //Richard 2016-11-04 18:01 GMT+09:00 Jonas Hagen <[email protected]>: > Dear all > > I'm currently porting my wind retrievals from ARTS/atmlab v2.2 to v2.3 > (developement version). But somehow the wind retrievals just return zeros > (wind_{u|v}_x and wind_{u|v}_A in L2 are exactly 0). This is also the case > for the qpack2_wind3d_demo.m. Can anyone confirm this? I could need some > help with the debugging. There are no error messages or warnings. > > Best regards, > Jonas > > -- > Jonas Hagen > Institute of Applied Physics > University of Bern > Sidlerstr. 5, CH-3012 Bern, Switzerland > > _______________________________________________ > qpack.mi mailing list > [email protected] > https://mailman.rrz.uni-hamburg.de/mailman/listinfo/qpack.mi >
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