Search found 7 matches

by mohouwa
Wed Dec 02, 2020 4:00 am
Forum: Miscellaneous WRF
Topic: Low temperature in coastal areas
Replies: 3
Views: 235

Re: Low temperature in coastal areas

Hi, Have you taken a look at the raw input data to see what the 2m temps were? If the input data has abnormally low temperatures, or has some "bad" or missing data, that could lead to the difference. I assume you are using the same version of the WRF model, and other than the input dates, nothing i...
by mohouwa
Tue Dec 01, 2020 12:57 pm
Forum: Miscellaneous WRF
Topic: Low temperature in coastal areas
Replies: 3
Views: 235

Low temperature in coastal areas

HI~ I am dong a simulation in China from 2017.10.21 to 2017.10.27 , the results show that the average temperature at 2 m near the coastline is seriously underestimated ( picture 1 attched below,the east coast around China and other regions are dramatically decreased ),and it should be around 15 ~ 20...
by mohouwa
Thu Nov 12, 2020 1:17 pm
Forum: Chemistry-meteorology Interactions
Topic: Ozone and T2 simulation is inaccurate
Replies: 4
Views: 705

Re: Ozone and T2 simulation is inaccurate

Hi @mohouwa Good to hear your problem has been solved. Were these your only changes? I was comparing your changes to your original namelist and noticed that you had not specified a boundary layer physics options (i.e., bl_pbl_physics = 0). Have you also changed this? Jordan Yes , I have changed bl_...
by mohouwa
Sat Oct 31, 2020 3:15 am
Forum: Chemistry-meteorology Interactions
Topic: Ozone and T2 simulation is inaccurate
Replies: 4
Views: 705

Re: Ozone and T2 simulation is inaccurate

Sorry, I have just saw your comment now :oops: :oops: , my problem has been solved. The reason for the error is that the physical parameter of the namelist is incorrectly set,I have changed the ra_sw_physics to 5 and bl_pbl_physics to 1,and the result are much more accurate.
by mohouwa
Sat Oct 17, 2020 12:34 pm
Forum: Chemistry-meteorology Interactions
Topic: Ozone and T2 simulation is inaccurate
Replies: 4
Views: 705

Ozone and T2 simulation is inaccurate

I am using WRF-CHEM 4.2.1 to simulate the concentration of ozone from 2016.9.16 to 2016.9.28 , the result shows a serious deviatin, and the T2 variable is even negative, I don't know where the problems is .... could someone help me ? My namelist.input has attched below.
by mohouwa
Thu Oct 15, 2020 2:45 am
Forum: Chemistry-meteorology Interactions
Topic: different wind directions of WRF-ChemV4 and WRF-ChemV3.8.1
Replies: 1
Views: 586

Re: different wind directions of WRF-ChemV4 and WRF-ChemV3.8.1

:D I have found the reason,since WRFV4.0 have some problems, we should choose other versions (3.8.1 4.1 4.2 ...) to do the simulation,so the result of WRF-Chem3.8.1 is correct.
by mohouwa
Wed Oct 14, 2020 3:36 am
Forum: Chemistry-meteorology Interactions
Topic: different wind directions of WRF-ChemV4 and WRF-ChemV3.8.1
Replies: 1
Views: 586

different wind directions of WRF-ChemV4 and WRF-ChemV3.8.1

I have started WRF-Chem simulations from 2015.7.26 to 2015.8.9 using WRF-Chem 4.0 and WRF-Chem3.8.1 respectively in oreder to study the characteristic of ozone, and the result is strange. At the same simulation time,two different versions show two different wind directions,And almost they are opposi...

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