# CMAQ-DDM-3D **URL:** https://forum.cmascenter.org/c/cmaq-ddm3d/18.md?page=1 [Latest](https://forum.cmascenter.org/latest.md) · [Categories](https://forum.cmascenter.org/categories.md) · [Tags](https://forum.cmascenter.org/tags.md) **Page:** 2 --- ## [CMAQv5.4 HDDM gives too high second order sensitivity](https://forum.cmascenter.org/t/cmaqv5-4-hddm-gives-too-high-second-order-sensitivity/3722)
**Author:** [@FengLiu](https://forum.cmascenter.org/u/FengLiu)\ **Replies:** 14\ **Last updated:** [August 8, 2023, 5:44pm UTC](https://forum.cmascenter.org/t/cmaqv5-4-hddm-gives-too-high-second-order-sensitivity/3722 "2023-08-08T17:44:56Z")
Hi, The second order ozone sensitivity coefficients to NOx and VOC is too high (e.g. -0.0099 ~ 0.4557 ppmV) from CMAQv5.4 HDDM. Second cross 2nd order sensitivity to NOx,VOC is even more higher. The first order sensiti… --- ## [No variables in ASENS files](https://forum.cmascenter.org/t/no-variables-in-asens-files/4243)
**Author:** [@wangnan](https://forum.cmascenter.org/u/wangnan)\ **Replies:** 4\ **Last updated:** [July 28, 2023, 11:35am UTC](https://forum.cmascenter.org/t/no-variables-in-asens-files/4243 "2023-07-28T11:35:05Z")
Hi, I am a beginner with CMAQ-DDM v5.4. I started a test run with a focus on O3 sensitivity to NOx and VOC. I set the model based on the tutorial, and the model succsefully ran, but when I check the output, I find the… --- ## [CMAQ-DDM5.4 simulation output is not resonable](https://forum.cmascenter.org/t/cmaq-ddm5-4-simulation-output-is-not-resonable/4209)
**Author:** [@Sunshine](https://forum.cmascenter.org/u/Sunshine)\ **Replies:** 4\ **Last updated:** [July 13, 2023, 10:01am UTC](https://forum.cmascenter.org/t/cmaq-ddm5-4-simulation-output-is-not-resonable/4209 "2023-07-13T10:01:11Z")
I used the CMAQ-DDM5.4 to simulate a case. The spatial distribution was unreasonable. How to fix it ? --- ## [DDMv5.4 variable names from sensitivities in CTM\_SDRYDEP\_1 file](https://forum.cmascenter.org/t/ddmv5-4-variable-names-from-sensitivities-in-ctm-sdrydep-1-file/4069)
**Author:** [@abi0010](https://forum.cmascenter.org/u/abi0010)\ **Replies:** 4\ **Last updated:** [April 19, 2023, 3:52am UTC](https://forum.cmascenter.org/t/ddmv5-4-variable-names-from-sensitivities-in-ctm-sdrydep-1-file/4069 "2023-04-19T03:52:12Z")
Hi. I am running DDM5.4 and looking at the CTM LOG files of the first day (which ran to completion). I noticed that CMAQ is trying to write out a variable name, which were not specified anywhere in the run script or in … --- ## [Issue on running CMAQv5.4-DDM3D](https://forum.cmascenter.org/t/issue-on-running-cmaqv5-4-ddm3d/3806)
**Author:** [@copycky28](https://forum.cmascenter.org/u/copycky28)\ **Replies:** 21\ **Last updated:** [March 23, 2023, 11:07pm UTC](https://forum.cmascenter.org/t/issue-on-running-cmaqv5-4-ddm3d/3806 "2023-03-23T23:07:07Z")
Hi all, I am trying to run CMAQ DDM, but I have an issue that the sensitivity coefficients in ASENS outputs are all zero. I tried to use CMAQ v5.3.3 at first but I got a suggestion from this forum that this version migh… --- ## [CMAQv5.4 HDDM Sensitivity Dry Deposition file issue](https://forum.cmascenter.org/t/cmaqv5-4-hddm-sensitivity-dry-deposition-file-issue/3964)
**Author:** [@munshimdrasel](https://forum.cmascenter.org/u/munshimdrasel)\ **Replies:** 6\ **Last updated:** [March 23, 2023, 3:25pm UTC](https://forum.cmascenter.org/t/cmaqv5-4-hddm-sensitivity-dry-deposition-file-issue/3964 "2023-03-23T15:25:41Z")
Hy, I am running CMAQv5.4 with DDM. I am trying to do HDDM sensitivity analysis of ptegu emissions for 2020 emissions data. The CCTM model runs fine and it generates CCTM\_ASENS, CCTM\_SENDDEP, CCTM\_SENWDEP files. However… --- ## [ Issue on running CMAQv5.3.2-DDM3D](https://forum.cmascenter.org/t/issue-on-running-cmaqv5-3-2-ddm3d/3981)
**Author:** [@lisheng](https://forum.cmascenter.org/u/lisheng)\ **Replies:** 1\ **Last updated:** [March 20, 2023, 7:21pm UTC](https://forum.cmascenter.org/t/issue-on-running-cmaqv5-3-2-ddm3d/3981 "2023-03-20T19:21:47Z")
Hi all, I am trying to run CMAQ v5.3.2-DDM, but I have an issue that the sensitivity coefficients in ASENS outputs are all zero. I successfully run the base simulation using v5.3.2 already so I think there might not be … --- ## [DDM 5.4 crashes when writing to next day](https://forum.cmascenter.org/t/ddm-5-4-crashes-when-writing-to-next-day/3937)
**Author:** [@abi0010](https://forum.cmascenter.org/u/abi0010)\ **Replies:** 1\ **Last updated:** [March 7, 2023, 10:41pm UTC](https://forum.cmascenter.org/t/ddm-5-4-crashes-when-writing-to-next-day/3937 "2023-03-07T22:41:14Z")
DDM crashes after processing the first day. Not sure why I am getting this error. out\_job\_14054141.txt (347.0 KB) Does DDM (5.2 and or 5.4) need consecutive days for the emissions files to run successfully? When I sele… --- ## [Bi-Directional ammonia](https://forum.cmascenter.org/t/bi-directional-ammonia/3910)
**Author:** [@munshimdrasel](https://forum.cmascenter.org/u/munshimdrasel)\ **Replies:** 11\ **Last updated:** [March 2, 2023, 3:07pm UTC](https://forum.cmascenter.org/t/bi-directional-ammonia/3910 "2023-03-02T15:07:40Z")
Hy, I am trying to run CMAQv5.4 with DDM using 2020 emissions data. The emissions dataset we have got from our collaborator does not include data for running the Ammonia Bi-directional tool in the CCTM script. My questi… --- ## [CMAQv5.4 DDM (split inventories for gridded emissions)](https://forum.cmascenter.org/t/cmaqv5-4-ddm-split-inventories-for-gridded-emissions/3932)
**Author:** [@abi0010](https://forum.cmascenter.org/u/abi0010)\ **Replies:** 2\ **Last updated:** [February 21, 2023, 5:17pm UTC](https://forum.cmascenter.org/t/cmaqv5-4-ddm-split-inventories-for-gridded-emissions/3932 "2023-02-21T17:17:11Z")
With DDM5.2, a gridded file (with all emissions) would be in the main script and then split inventories (i.e., a custom category of the user’s setup) of gridded files would be listed elsewhere in the run script. With DDM… --- ## [CMAQv5.2 DDM - not able to output more than one sens](https://forum.cmascenter.org/t/cmaqv5-2-ddm-not-able-to-output-more-than-one-sens/3669)
**Author:** [@abi0010](https://forum.cmascenter.org/u/abi0010)\ **Replies:** 12\ **Last updated:** [February 21, 2023, 2:26pm UTC](https://forum.cmascenter.org/t/cmaqv5-2-ddm-not-able-to-output-more-than-one-sens/3669 "2023-02-21T14:26:03Z")
Hi. It seems that DDM in CMAQv5.2 only output one sensitivity. When additional sens files are added (EGRIDfile2), in the run script, it is not read in by the program. Is this the default of the DDM in version 5.2? Also, … --- ## [Using bi-directional NH3 flux module in CMAQ](https://forum.cmascenter.org/t/using-bi-directional-nh3-flux-module-in-cmaq/2972)
**Author:** [@bkoo](https://forum.cmascenter.org/u/bkoo)\ **Replies:** 3\ **Last updated:** [February 13, 2023, 5:45pm UTC](https://forum.cmascenter.org/t/using-bi-directional-nh3-flux-module-in-cmaq/2972 "2023-02-13T17:45:40Z")
My understanding is that, to use CMAQ’s bi-directional NH3 module, you should provide NH3 emissions from fertilizer separately (as NH3\_FERT) to avoid double-counting. Then, CMAQ uses total NH3 emissions (NH3) minus NH3\_… --- ## [How to apply DDM results to estimate ozone/PM2.5 changes?](https://forum.cmascenter.org/t/how-to-apply-ddm-results-to-estimate-ozone-pm2-5-changes/3859)
**Author:** [@hlbutterfly](https://forum.cmascenter.org/u/hlbutterfly)\ **Replies:** 4\ **Last updated:** [January 20, 2023, 2:02pm UTC](https://forum.cmascenter.org/t/how-to-apply-ddm-results-to-estimate-ozone-pm2-5-changes/3859 "2023-01-20T14:02:31Z")
Hi, I want to know how to apply DDM results to calculate ozone/PM2.5 changes with a certain emission reduction rate. I am OK with getting the DDM results but am not 100% sure about how to apply these results. I understan… --- ## [Question about ANH4I sensitivity to NH3 in CMAQ5.2 DDM is zero](https://forum.cmascenter.org/t/question-about-anh4i-sensitivity-to-nh3-in-cmaq5-2-ddm-is-zero/3847)
**Author:** [@Polaris](https://forum.cmascenter.org/u/Polaris)\ **Replies:** 1\ **Last updated:** [January 19, 2023, 7:16pm UTC](https://forum.cmascenter.org/t/question-about-anh4i-sensitivity-to-nh3-in-cmaq5-2-ddm-is-zero/3847 "2023-01-19T19:16:38Z")
Hello, I am still a beginner in using CMAQ-DDM-3D and I have run successfully. Recently I meet some trouble. I want to obtain the sensitivity of PM25 to NH3, so I need to know the sensitivity of ANH4I and ANH4J to NH3,… --- ## [Question about PM25 sensitivity to its precursor in CMAQ5.2 DDM](https://forum.cmascenter.org/t/question-about-pm25-sensitivity-to-its-precursor-in-cmaq5-2-ddm/3834)
**Author:** [@Polaris](https://forum.cmascenter.org/u/Polaris)\ **Replies:** 3\ **Last updated:** [January 9, 2023, 3:14pm UTC](https://forum.cmascenter.org/t/question-about-pm25-sensitivity-to-its-precursor-in-cmaq5-2-ddm/3834 "2023-01-09T15:14:16Z")
Hello, I am still a beginner in using CMAQ-DDM-3D and I have run successfully. But i meet some trouble now. I want to obtain the sensitivity of PM25 to its precursors, so I need to know the sensitivity of each componen… --- ## [ERROR running HDDM using CMAQV5.3.3: Max NVARS exceeded when building CTM\_SWETDEP\_1](https://forum.cmascenter.org/t/error-running-hddm-using-cmaqv5-3-3-max-nvars-exceeded-when-building-ctm-swetdep-1/3756)
**Author:** [@wry2233](https://forum.cmascenter.org/u/wry2233)\ **Replies:** 9\ **Last updated:** [December 30, 2022, 6:37am UTC](https://forum.cmascenter.org/t/error-running-hddm-using-cmaqv5-3-3-max-nvars-exceeded-when-building-ctm-swetdep-1/3756 "2022-12-30T06:37:53Z")
Hi, I am running DDM with CMAQv5.3.3. I’ve already run it successfully when I set 2 or 3 sensitivities. However, I got this error when I defined 44 first-order and second-order sensitivities with specific regions. I… --- ## [Illegal instruction in running CMAQ-DDM](https://forum.cmascenter.org/t/illegal-instruction-in-running-cmaq-ddm/3786)
**Author:** [@copycky28](https://forum.cmascenter.org/u/copycky28)\ **Replies:** 1\ **Last updated:** [December 20, 2022, 2:00am UTC](https://forum.cmascenter.org/t/illegal-instruction-in-running-cmaq-ddm/3786 "2022-12-20T02:00:19Z")
Hi all, I am trying to run a CMAQ-DDM using CCTM\_v533\_DDM3D.saprc07tc\_ae6\_aq, I successfully compile all libraries and executables but once I run the job, the error message comes as: YOUR APPLICATION TERMINATED WITH TH… --- ## [Question about CMAQ5.2 HDDM sensitivity to multiple precursor emissions](https://forum.cmascenter.org/t/question-about-cmaq5-2-hddm-sensitivity-to-multiple-precursor-emissions/3452)
**Author:** [@FengLiu](https://forum.cmascenter.org/u/FengLiu)\ **Replies:** 1\ **Last updated:** [August 2, 2022, 2:54pm UTC](https://forum.cmascenter.org/t/question-about-cmaq5-2-hddm-sensitivity-to-multiple-precursor-emissions/3452 "2022-08-02T14:54:00Z")
Hello, With CMAQ 5.2 HDDM we are able to calculate O3 first and second order sensitivities to NOx (NO, NO2) and VOC emissions. Based on the result we can estimate how much emission reduction of NOx and VOC or both in an… --- ## [Question about the output of species for CMAQ-DDM v5.3.2](https://forum.cmascenter.org/t/question-about-the-output-of-species-for-cmaq-ddm-v5-3-2/3456)
**Author:** [@Polaris](https://forum.cmascenter.org/u/Polaris)\ **Replies:** 2\ **Last updated:** [August 2, 2022, 2:51pm UTC](https://forum.cmascenter.org/t/question-about-the-output-of-species-for-cmaq-ddm-v5-3-2/3456 "2022-08-02T14:51:52Z")
Hi everyone, I am still a beginner in using CMAQ-DDM-3D and I have run successfully the CMAQ\_v532\_DDM-3D. But i meet some trouble when i want to export only part of the species. If i set the CONC\_SPCS only O3, DDM-3D s… --- ## [How to set CMAQ/HDDM sensitivity input parameters for EMIS in specific REGIONS?](https://forum.cmascenter.org/t/how-to-set-cmaq-hddm-sensitivity-input-parameters-for-emis-in-specific-regions/3444)
**Author:** [@FengLiu](https://forum.cmascenter.org/u/FengLiu)\ **Replies:** 10\ **Last updated:** [July 26, 2022, 5:57pm UTC](https://forum.cmascenter.org/t/how-to-set-cmaq-hddm-sensitivity-input-parameters-for-emis-in-specific-regions/3444 "2022-07-26T17:57:11Z")
Hi, I am running CMAQv5.2 with HDDM successfully using the sensitivity input parameters (see attached sensinput.dat.txt (759 Bytes) for domain wide. Now I am going to run the CMAQ/HDDM focusing on sensitivity of only a… --- ## [CMAQ-DDM latest version](https://forum.cmascenter.org/t/cmaq-ddm-latest-version/3424)
**Author:** [@SharMM](https://forum.cmascenter.org/u/SharMM)\ **Replies:** 4\ **Last updated:** [July 21, 2022, 6:24pm UTC](https://forum.cmascenter.org/t/cmaq-ddm-latest-version/3424 "2022-07-21T18:24:46Z")
Is there a latest version of CMAQ-DDM coming out anytime soon? --- ## [CMAQ-DDM for v5.3.3](https://forum.cmascenter.org/t/cmaq-ddm-for-v5-3-3/3373)
**Author:** [@abi0010](https://forum.cmascenter.org/u/abi0010)\ **Replies:** 4\ **Last updated:** [July 17, 2022, 4:41am UTC](https://forum.cmascenter.org/t/cmaq-ddm-for-v5-3-3/3373 "2022-07-17T04:41:33Z")
Hi I noticed previously in the bldit script for CMAQv5.3.1, that there was no option to compile DDM. With the recent versions of CMAQ now (i.e 5.3.3), I see it is listed as an option. Although the MECHs directory does n… --- ## [CMAQv5.2\_DDM-3D Jacobian files for other chemical mechanisms](https://forum.cmascenter.org/t/cmaqv5-2-ddm-3d-jacobian-files-for-other-chemical-mechanisms/652)
**Author:** [@hml](https://forum.cmascenter.org/u/hml)\ **Replies:** 19\ **Last updated:** [July 13, 2022, 9:06am UTC](https://forum.cmascenter.org/t/cmaqv5-2-ddm-3d-jacobian-files-for-other-chemical-mechanisms/652 "2022-07-13T09:06:17Z")
Hello,all I found jac\_cb05tucl\_ae6\_aq.F was not imperfect when I compile CMAQv5.2\_DDM-3D with cb05tucl\_ae6\_aq mechanism. jac\_cb05tucl\_ae6\_aq.F(2021): error #6351: The number of subscripts is incorrect. \[C\] PD( CLNO2 ,… --- ## [Create a sensinput file for ozone sensitivity](https://forum.cmascenter.org/t/create-a-sensinput-file-for-ozone-sensitivity/3116)
**Author:** [@yyxzzdggb](https://forum.cmascenter.org/u/yyxzzdggb)\ **Replies:** 1\ **Last updated:** [June 7, 2022, 3:50pm UTC](https://forum.cmascenter.org/t/create-a-sensinput-file-for-ozone-sensitivity/3116 "2022-06-07T15:50:15Z")
Hello, I’m a novice. I want to use CMAQ-DDM(5.2) to calculate the sensitivity of ozone generation to NOx and VOC emissions. What should I do? Do I need to enter different lists to simulate? And how should I set my sensin… --- ## [Questions about sensinput file](https://forum.cmascenter.org/t/questions-about-sensinput-file/1658)
**Author:** [@franky](https://forum.cmascenter.org/u/franky)\ **Replies:** 19\ **Last updated:** [May 26, 2022, 10:01pm UTC](https://forum.cmascenter.org/t/questions-about-sensinput-file/1658 "2022-05-26T22:01:25Z")
Hi, I’m new to CAMQ-HDDM. Although I’ve already run it succesfully, I had some questions. Looking forward to your reply, thanks! EMIS term. I have some problems using “EMIS\_1”，and fixed it with replacing EMIS\_1 with T… --- ## [CMAQ-DDM Error: number of in Jacobian does not match N\_GC\_SPC](https://forum.cmascenter.org/t/cmaq-ddm-error-number-of-in-jacobian-does-not-match-n-gc-spc/730)
**Author:** [@maplewind](https://forum.cmascenter.org/u/maplewind)\ **Replies:** 2\ **Last updated:** [June 21, 2019, 7:29am UTC](https://forum.cmascenter.org/t/cmaq-ddm-error-number-of-in-jacobian-does-not-match-n-gc-spc/730 "2019-06-21T07:29:32Z")
hello，when I was running CMAQ-DDM-3D(v5.2),there is the following error:Number of species in Jacobian does not match N\_GC\_SPC. I have tried to compile DDM with two mechnisms (cb05\_tucl and cb05\_e51),the error is the s… --- ## [DDM Jacobian files for other chemical mechanisms](https://forum.cmascenter.org/t/ddm-jacobian-files-for-other-chemical-mechanisms/498)
**Author:** [@noitul](https://forum.cmascenter.org/u/noitul)\ **Replies:** 4\ **Last updated:** [March 24, 2022, 3:14am UTC](https://forum.cmascenter.org/t/ddm-jacobian-files-for-other-chemical-mechanisms/498 "2022-03-24T03:14:29Z")
Dear CMAQ users, I’m trying to set up CMAQv5.2 DDM with SAPRC07 mechanism. I found that only cb6r3 has a Jacobian code for DDM compile (jac\_cb6r3\_ae6nvPOA\_aq.F). Could you let me know how to generate the “jac” files for… --- ## [Getting NaN when running multiple sensitivity parameters](https://forum.cmascenter.org/t/getting-nan-when-running-multiple-sensitivity-parameters/2869)
**Author:** [@wfy](https://forum.cmascenter.org/u/wfy)\ **Replies:** 3\ **Last updated:** [December 24, 2021, 2:58pm UTC](https://forum.cmascenter.org/t/getting-nan-when-running-multiple-sensitivity-parameters/2869 "2021-12-24T14:58:03Z")
Hi there, I am using CMAQv5.2-DDM to calculate the sensitivity, the result is reasonable when I simulate one parameter. But I get ininity and NaN values when the number of sensitivity parameters are more than one. I am… --- ## [CMAQ-DDM Sensinput Reaction Rates](https://forum.cmascenter.org/t/cmaq-ddm-sensinput-reaction-rates/2405)
**Author:** [@SharMM](https://forum.cmascenter.org/u/SharMM)\ **Replies:** 9\ **Last updated:** [November 18, 2021, 4:43pm UTC](https://forum.cmascenter.org/t/cmaq-ddm-sensinput-reaction-rates/2405 "2021-11-18T16:43:52Z")
Hi, I have a question about the sensinput data. I would like generate separately sensitivities to multiple reaction rates, it works if define in one, but not as separate. Please advise. Works\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* RATE1 RAT… --- ## [DDM-3D error 'GC units incorrect'](https://forum.cmascenter.org/t/ddm-3d-error-gc-units-incorrect/2342)
**Author:** [@xiaofen](https://forum.cmascenter.org/u/xiaofen)\ **Replies:** 2\ **Last updated:** [May 19, 2021, 3:48pm UTC](https://forum.cmascenter.org/t/ddm-3d-error-gc-units-incorrect/2342 "2021-05-19T15:48:13Z")
Hi everyone, I tried to use DDM-3D model but have errors. I attached part of cctm.log here \*\*\* ERROR ABORT in subroutine S\_OPEMIS on PE 000 GC units incorrect on EMIS\_1 Date and time 0:02:30 July 1, 2011 … [Previous page](https://forum.cmascenter.org/c/cmaq-ddm3d/18.md) [Next page](https://forum.cmascenter.org/c/cmaq-ddm3d/18.md?page=2)