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Contour Gaps in Basemap Not Blank

I am trying to plot global NOAA data in basemap and the data is coming through just fine; however in regions where there is no data, instead of being blank, the area (land) is filled with max contour levels. I am using connectgaps=False and that doesn’t seem to work.

Image below and generally following the example: https://plot.ly/ipython-notebooks/basemap-maps/

Any thoughts?

Thanks in advance!
Craig