Happy New Year 2024 (and sorry for the forum being offline some hours) /DM
ImageJ recognizes Ascat gif as a false color RGB. Image —> Type —> 8-bit to set it an authentic grayscale.Then maybe 8 bit —>16 bit if doing multiple adjustments, to reduce round-off effects that posterize 8-bit.
My workaround has been this..3a. From the Image menu select Type->RGB Color
Horizontal rolls are counter-rotating vortex rolls that are nearly aligned with the mean wind of the Planetary Boundary Layer (PBL). They can be caused by convection in the presence of a moderate wind[2] and/or dynamic inflection point instabilities in the mean wind profile.[3] Early theory[3][4][5][6][7] on the features predict that the vortices may be aligned up to 30° to the left for stably stratified environments, 18° to the left for neutral environments, and nearly parallel to the mean wind for unstably stratified (convective) environments. This theory has been supported by aircraft observations from several field experiments.[5][7][8]The depth of a vortex is usually the depth of the boundary layer, which is generally on the order of 1–2 km. A vortex pair usually has a lateral to vertical dimension ratio of around 3:1.[6][7][9] Experimental studies have shown that the aspect ratio (a ratio of roll wavelength to boundary layer depth) has been found to vary between 2:1 and 6:1, however, in some situations, the aspect ratio may be as large as 10:1. The lifetime of a convective roll can last from hours to days.[4][10][6][7]If the environmental air is near saturation, condensation may occur in updrafts produced from the vortex rotation. The sinking motion produced between alternating pairs of rolls will evaporate clouds. This, combined with the updrafts, will produce rows of clouds. Glider pilots often use the updrafts produced by cloud streets enabling them to fly straight for long distances, hence the name “cloud streets”.
Adding to thecomplexity is the modulation of surface-layer streaksand mixed-layer thermals by mixed-layer rolls in whatmay be a two-way coupling (Khanna and Brasseur1998).The deeper mixed-layer rolls are convective bandsaligned roughly with the mean ABL wind, with awide range of aspect ratios (AR; i.e., roll wavelengthdivided by boundary layer depth). Narrow mixedlayerrolls are typically only one thermal wide (e.g.,Weckwerth et al. 1999). A thermal is a threedimensionalconvective plume, usually in the sizerange of hundreds of meters, risingfrom the surface to the capping inversion.Fair-weather cumuli result fromcondensation within individualthermals (Reichmann 1978). Narrowmixed-layer rolls and embeddedthermals often lead to a "string ofpearls" appearance of any associatedcumulus cloud streets
I've almost convinced myself not only that cloud streets depend on excess angular momentum for evaporation but that the angular momentum passes through the phase change, is that even possible?
snowmelt indexed gif test(sorry kassy, pls remove out of date mp4 above)
Thanks for the explanation, its a nice product though quite subtle.I'm not sure if any of this will help or indeed its quite probable you already know it all, but i tend to refer to this when working on enhancing image contrast. Its very useful to me so might end up helping you out. Going from the microscopic to very much the macroscopic but there are still image similaritieshttps://www.cbm.uam.es/images/servicios/microscopia-optica-confocal/documentos/seminarios/Segmentation_ImageJ_Fiji.pdf
Note: colors may vary diurnally, seasonally and latitudinally
Alt. Where would be the best place to put one, so I can post a link here.
Me again, the .csv I save to my PC retains the formulas, but not when posted on the thread.e.g. Reply #386 of The Green Hydrogen Economy, also reposted belowAre there different types of .csv - I can see only one option If I asked, could the moderator add .xlsx as an allowable file type?
If I asked, could the moderator add .xlsx as an allowable file type?
