How sensable heat flux heat the atmosphere?

[njujyq@163_com]

It is clear that latent heat flux heat atmosphere when it becomes to rainfall, and the varable "dtcond" is the heating contribute by it.

I just wonder how sensible heat flux heat atmosphere?

Does it relate to DTV (T vertical diffussing)?

Can I find the result in the souce code?

thanks!

 

[hannay]

DTCOND is the precipitation physics tendency. This is the tendency due to deep convection, shallow convection and from the prognostic cloud water scheme.

DTCOND = ZMDT + EVAPTZM + CMFDT + EVAPTCM + HPROGCLD/CPAIR + HSED/CPAIR
where:
- ZMDT - Zhang moist convection tendency (creating rain only)
- EVAPTZM - T tendency from snow formation and rain and snow evaporation of Zhang convective precip
- CMFDT - shallow moist convection tendency
- EVAPTCM - T tendency from snow formation and rain and snow evaporation of shallow convective precip
- HPROGCLD - energy (W/kg) from prognostic cloud water (stratiform)
- HSED - energy (W/kg) from evaporation of sedimentation
- CPAIR = 1.00464e3 J/(kg K)


DTV is the vertical diffusion tendency due the PBL scheme

 

[little trouble maker]

大家好，

我想通过使用CESM1.2.0中的CAM4修改潜热加热来进行灵敏度实验，也就是说，我想修改DTCOND，但是我不知道physpkg.f90中的哪个子程序应该专门修改。以下四个部分修改：convect_shallow_tend，convect_deep_tend，Stratiform_tend和macrop_tend？还是应该修改其他子例程？

非常感谢！

 

[little trouble maker]

[QUOTE =“小麻烦制造者，帖子：36965，成员：3891”]
大家好，

我想通过使用CESM1.2.0中的CAM4修改潜热加热来进行灵敏度实验，从而，我想修改DTCOND，但是我不知道physpkg.f90中的该子程序应该专门修改。以下四个部分修改：convect_shallow_tend ，convect_deep_tend，Stratiform_tend和macrop_tend？还是应该修改其他子例程？

非常感谢！
[/引用]

DTCOND is the precipitation physics tendency. This is the tendency due to deep convection, shallow convection and from the prognostic cloud water scheme.

DTCOND = ZMDT + EVAPTZM + CMFDT + EVAPTCM + HPROGCLD/CPAIR + HSED/CPAIR
where:
- ZMDT - Zhang moist convection tendency (creating rain only)
- EVAPTZM - T tendency from snow formation and rain and snow evaporation of Zhang convective precip
- CMFDT - shallow moist convection tendency
- EVAPTCM - T tendency from snow formation and rain and snow evaporation of shallow convective precip
- HPROGCLD - energy (W/kg) from prognostic cloud water (stratiform)
- HSED - energy (W/kg) from evaporation of sedimentation
- CPAIR = 1.00464e3 J/(kg K)


DTV is the vertical diffusion tendency due the PBL scheme

Sorry about my last reply.

I do sensitivity experiments by modifying latent heating using the CAM4 in CEMS1.2.0, that is, I want to modify DTCOND, but I don't know which subroutine in physpkg.f90 should be modified specifically.Are the following four sections modified: convect_shallow_tend, convect_deep_tend, Stratiform_tend, and macrop_tend?Or should other subroutines be modified?

 

[little trouble maker]

I am a new member of the CESM forum. Sorry about my last reply.

I do sensitivity experiments by modifying latent heating using the CAM4 in CEMS1.2.0, that is, I want to modify DTCOND, but I don't know which subroutine in physpkg.f90 should be modified specifically.Are the following four sections modified: convect_shallow_tend, convect_deep_tend, Stratiform_tend, and macrop_tend?Or should other subroutines be modified?

Thanks very much!

 

[Li1108]

DTCOND is the precipitation physics tendency. This is the tendency due to deep convection, shallow convection and from the prognostic cloud water scheme.

DTCOND = ZMDT + EVAPTZM + CMFDT + EVAPTCM + HPROGCLD/CPAIR + HSED/CPAIR
where:
- ZMDT - Zhang moist convection tendency (creating rain only)
- EVAPTZM - T tendency from snow formation and rain and snow evaporation of Zhang convective precip
- CMFDT - shallow moist convection tendency
- EVAPTCM - T tendency from snow formation and rain and snow evaporation of shallow convective precip
- HPROGCLD - energy (W/kg) from prognostic cloud water (stratiform)
- HSED - energy (W/kg) from evaporation of sedimentation
- CPAIR = 1.00464e3 J/(kg K)


DTV is the vertical diffusion tendency due the PBL scheme

Hi Hannay,

Thanks for the information! How about the ZMMTT (T tendency - ZM convective momentum transport)? From my understanding, ZMDT+EVAPTZM represents the net condensation heating related to the formation and evaporation of rain and snow. How about the the temperature change due to convective momentum transport?

Best,
Li