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<span style="font-family:Georgia;font-size:18px;">Dear All,</span>
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<span style="font-family:Georgia;font-size:18px;">I have the barotropic streamfunction values in the southern ocean (attached figure). I want to get the mean latitude (ACC core) at each longitude. And plot the data as Latitude longitude contour plot using one contour line. I am bit lost about how can I do this. It would be great if you can give me some ideas about getting the mean Latitudes for each and every longitude.</span>
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<span style="font-family:Georgia;font-size:18px;">Print summary for the data set:</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;">Type: float</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;">Total Size: 870364 bytes</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>217591 values</span>
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<p class="p1" style="margin-bottom:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;white-space:normal;">
<span class="s1" style="font-variant-ligatures:no-common-ligatures;">Number of Dimensions: 2</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;">Dimensions and sizes: [lat | 151] x [lon | 1441]</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;">Coordinates:<span class="Apple-converted-space"> </span></span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>lat: [ -35..-72.5]</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>lon: [-180.. 180]</span>
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<p class="p1" style="margin-bottom:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;white-space:normal;">
<span class="s1" style="font-variant-ligatures:no-common-ligatures;">Number Of Attributes: 12</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>_FillValue : 1e+20</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>standard_name : ocean_barotropic_mass_streamfunction</span>
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<p class="p1" style="margin-bottom:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;white-space:normal;">
<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>long_name : Ocean Barotropic Mass Streamfunction</span>
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<p class="p1" style="margin-bottom:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;white-space:normal;">
<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>comment : Streamfunction or its approximation for free surface models. See OMDP document for details.</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>units : kg s-1</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>original_name : msftbarot</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>cell_methods : area: mean where sea time: mean</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>cell_measures : area: areacello</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>history : 2019-08-25T07:38:10Z altered by CMOR: replaced missing value flag (-9e+33) and corresponding data with standard missing value (1e+20).</span>
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<p class="p1" style="margin-bottom:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;white-space:normal;">
<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>remap : remapped via ESMF_regrid_with_weights: Bilinear</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>average_op_ncl : dim_avg_n over dimension(s): time</span>
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<span class="s1" style="font-variant-ligatures:no-common-ligatures;"><span class="Apple-converted-space"> </span>missing_value : 1e+20</span>
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<span style="font-family:Georgia;font-size:16px;">Millions of thanks and best regards,</span>
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<p>
<span style="font-family:Georgia;font-size:16px;">Chathu</span>
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<span style="font-style:italic;"><span style="font-size:x-small;">Wickramage Chathurika Hemamali</span></span>
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<span style="font-style:italic;"><span style="font-size:x-small;">Msc in Physical Oceanography</span></span>
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<div id="ydpc6aa4ef1yui_3_16_0_ym19_1_1496286059659_2251">
<span style="font-style:italic;"><span style="font-size:x-small;">State Key Laboratory of Tropical Oceanography</span></span>
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<span style="font-style:italic;"><span style="font-size:x-small;">South China Sea Institute of Oceanology</span></span>
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<span style="font-style:italic;"><span style="font-size:x-small;">University of Chinese Academy of Science</span></span>
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<span style="font-style:italic;"><span style="font-size:x-small;">China</span></span>
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<i><span style="font-size:xx-small;">Specialized in Oceanography and Marine Geology (Bachelor)</span></i>
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<i><span style="font-size:xx-small;">University of Ruhuna</span></i>
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<i><span style="font-size:xx-small;">Matara</span></i>
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<span style="font-style:italic;font-size:medium;">Email : <a target="_blank">wickramagechathurika@rocketmail.com</a></span>
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<span style="font-style:italic;font-size:medium;"><a target="_blank">chatu@scsio.ac.cn</a></span>
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