<div><div dir="auto">The data you are reading has a certain grid spacing. If it is too large, grid point values will not be representative of the observed mlsp. Also, if this forecast data, the forecast could just be wrong.</div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 4 Jun 2020 at 22:22 Arathy RP <<a href="mailto:arathyrparathy@gmail.com">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Actually i am not understanding what u meant by gridspacing.I didn't put anything related to grid spacing.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020 at 5:48 PM Arathy RP <<a href="mailto:arathyrparathy@gmail.com" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Yes, that's it. <br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 5, 2020 at 12:47 AM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com" target="_blank">barry.h.lynn@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto">The data set itself?</div></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 4 Jun 2020 at 22:13 Arathy RP <<a href="mailto:arathyrparathy@gmail.com" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Actually there is no gridlines used know. Its just a simple contour plot know.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020 at 5:38 PM Arathy RP <<a href="mailto:arathyrparathy@gmail.com" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">What do you mean? <br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 5, 2020 at 12:37 AM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com" target="_blank">barry.h.lynn@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">What is the grid spacing of the data?</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020 at 9:50 PM Arathy RP <<a href="mailto:arathyrparathy@gmail.com" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">and the location is correct.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020 at 5:19 PM Arathy RP <<a href="mailto:arathyrparathy@gmail.com" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>hi</div><div>Actually the exact time which i want to get minimum pressure is 32 .But i am getting on 36th timestep only minimum value.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 5, 2020 at 12:11 AM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com" target="_blank">barry.h.lynn@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir="auto">Hi:</div></div><div dir="auto"><br></div><div dir="auto">Making progress.</div><div dir="auto"><br></div><div dir="auto">Is that the location and time when you expect the lowest pressure?</div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 4 Jun 2020 at 20:46 Arathy RP <<a href="mailto:arathyrparathy@gmail.com" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>here is the printvarsummary of variable f</div><div>Variable: f<br>Type: float<br>Total Size: 462720 bytes<br> 115680 values<br>Number of Dimensions: 2<br>Dimensions and sizes: [g0_lat_1 | 241] x [g0_lon_2 | 480]<br>Coordinates: <br> g0_lat_1: [90..-90]<br> g0_lon_2: [ 0..359.25]<br>Number Of Attributes: 11<br> initial_time0_hours : 1873944<br> center : European Center for Medium-Range Weather Forecasts (RSMC)<br> long_name : Mean sea level pressure<br> units : Pa<br> _FillValue : 1e+20<br> level_indicator : 1<br> gds_grid_type : 0<br> parameter_table_version : 128<br> parameter_number : 151<br> forecast_time : 0<br> forecast_time_units : hours</div><div>And here is the printvarsummary of f_sub</div><div>Variable: f_sub<br>Type: float<br>Total Size: 14472 bytes<br> 3618 values<br>Number of Dimensions: 2<br>Dimensions and sizes: [g0_lat_1 | 54] x [g0_lon_2 | 67]<br>Coordinates: <br> g0_lat_1: [ 0..39.75]<br> g0_lon_2: [60..109.5]<br>Number Of Attributes: 11<br> forecast_time_units : hours<br> forecast_time : 0<br> parameter_number : 151<br> parameter_table_version : 128<br> gds_grid_type : 0<br> level_indicator : 1<br> _FillValue : 1e+20<br> units : Pa<br> long_name : Mean sea level pressure<br> center : European Center for Medium-Range Weather Forecasts (RSMC)<br> initial_time0_hours : 1873944<br>(0) Mean sea level pressure (Pa) : min=99429.4 max=102977<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020, 12:04 PM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com" target="_blank">barry.h.lynn@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi:<div><br></div><div>You need to reply to all, or they will get lost.</div><div><br></div><div>What do you imply by "mean sea level pressure?" Do you imply that the pressure is averaged?</div><div><br></div><div>It is not hard to find the minimum in an data field, so please just clarify and I will try to help you.</div><div><br></div><div>It is hard for me to correct other people's code, but I can send you code that should work to identify the minimum sea level pressure, or at least help you to adapt your own.</div><div><br></div><div>Barry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020 at 9:20 AM Arathy RP <<a href="mailto:arathyrparathy@gmail.com" rel="noreferrer" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Hi,<div dir="auto">Actually i want to get the minimum value for mean sea level pressure and I didn't understand the purpose for defining area .</div><div dir="auto">Can you please show an example.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 4, 2020, 12:45 AM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com" rel="noreferrer" target="_blank">barry.h.lynn@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi:<div><br></div><div>If you are plotting mean sea level pressure, you need to define over what area you calculate the mean. Otherwise, your mean will encompass an area much larger than the storm's center. </div><div><br></div><div>For instance, you could calculate the mean in areas where the wind speed is greater than some value, using the "where" statement.</div><div><br></div><div>Do you do that?</div><div><br></div><div>Barry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 3, 2020 at 9:50 PM Arathy RP <<a href="mailto:arathyrparathy@gmail.com" rel="noreferrer noreferrer" target="_blank">arathyrparathy@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi,<br></div><div>Yes, I will do that. <br></div><div>Actually I am plotting mean sea level pressure of very severe cyclonic storm Phailin.And I want to get the minimum mean sea level pressure as 994.29Pa only. As the cyclone belongs to category 5 storm the pressure level should go beyond 960Pa so that intensified contour plot of Phailin i will get. And the code is written by me by refering ncl sites.</div><div>I hereby attach the variable details and minimum pressure showing when plotted.</div><div>Thanking you<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 3, 2020 at 8:31 PM Barry Lynn <<a href="mailto:barry.h.lynn@gmail.com" rel="noreferrer noreferrer" target="_blank">barry.h.lynn@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi:<div><br></div><div>Can you show us what you are getting and what pressure you print out as the center pressure. This would help identify the problem.</div><div><br></div><div>Also, where did you get the code to make the surface pressure maps/tracking? Can you define what you mean by minimum contour plot.</div><div><br></div><div>Barry</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jun 3, 2020 at 4:27 PM Arathy RP via ncl-talk <<a href="mailto:ncl-talk@ucar.edu" rel="noreferrer noreferrer" target="_blank">ncl-talk@ucar.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi,</div><div>I am arz student of MSc finally year . As a part of my project work , i am working with cyclone contour plotting.I am dealing with cyclone phailin and i want to get minimum value contour plot for mean sea level pressure of cyclone.Actually there is no error showing even though i am getting a wrong value. I can't find what wrong with this .can you please help me to clarify it.</div><div>I am dealing with an intensified cyclone plot but not getting a result as expected. Please help me.</div><div>I hereby attaching the data and ncl script used.<br></div></div>
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</blockquote></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" rel="noreferrer noreferrer" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>
</blockquote></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" rel="noreferrer" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>
</blockquote></div>
</blockquote></div></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>
</blockquote></div>
</blockquote></div>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>
</blockquote></div>
</blockquote></div>
</blockquote></div></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>
</blockquote></div>
</blockquote></div>
</blockquote></div></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">Barry H. Lynn, Ph.D<div><div>Senior Associate Scientist, Lecturer,</div><div><div><span style="color:rgb(136,136,136)">The Institute of the Earth Science, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">The Hebrew University of Jerusalem, </span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Givat Ram, Jerusalem 91904, Israel </span><br style="color:rgb(136,136,136)"></div><span style="color:rgb(136,136,136)">Tel: 972 547 231 170</span><br style="color:rgb(136,136,136)"><span style="color:rgb(136,136,136)">Fax: (972)-25662581</span></div></div><div><span style="color:rgb(136,136,136)"><br></span></div><div>C.E.O, Weather It Is, LTD<br>Weather and Climate Focus<br><a href="http://weather-it-is.com" target="_blank">http://weather-it-is.com</a><br>Jerusalem, Israel<br>Local: 02 930 9525<br>Cell: 054 7 231 170<br>Int-IS: x972 2 930 9525<br><br></div></div></div></div></div>