log.debug( "writeCoverageDataToFile(): tifFile=" + tifFile.getPath() );
        WcsRangeField rangeField = this.range.get( reqRangeFieldName );
        GridDatatype subset = rangeField.getGridDatatype()
                .makeSubset( tRange, zRange, bboxLatLonRect, 1, 1, 1 );
        Array data = subset.readDataSlice( 0, 0, -1, -1 );
        GeotiffWriter writer = new GeotiffWriter( tifFile.getPath() );
        writer.writeGrid( this.dataset.getDataset(), subset, data, format == WcsRequest.Format.GeoTIFF );
        writer.close();