[GRASS-user] in need of Help

GRASS GRASS user
1

Respected Friends,

Could you please guide me how to find this layer?

**transmissivity_singleway**=*name* **[required]**
Name of the single-way atmospheric transmissivitymap [-]
**temperaturedifference2m**=*name* **[required]**
Name of the difference map of temperature from surface skin to about 2 m height [K]

i have Landsat 8 and meteorological data from the station(temp max, min).
Mr Yann Chemin explained for me but i did not understand.

it will be so helpful if any one can explain how to get these layers to be able to calculate the ET in GRASS…

Regards

2

hindo kush wrote

Respected Friends,

Could you please guide me how to find this layer?

*transmissivity_singleway*=*name* *[required]*Name of the single-way
atmospheric transmissivitymap [-]

*temperaturedifference2m*=*name* *[required]*Name of the difference map of
temperature from surface skin to about 2 m height [K]
i have Landsat 8 and meteorological data from the station(temp max, min).
Mr Yann Chemin explained for me but i did not understand.

it will be so helpful if any one can explain how to get these layers to be
able to calculate the ET in GRASS...

Regards

_______________________________________________
grass-user mailing list

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https://lists.osgeo.org/mailman/listinfo/grass-user

Which GRASS module do you want to use?

-----
best regards
Helmut
--
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3

Dear Helmut,

The version i use currently is winGRASS 7.4. 0

Thanks

···

On Mon, May 28, 2018 at 6:27 PM, Helmut Kudrnovsky <hellik@web.de> wrote:

hindo kush wrote

Respected Friends,

Could you please guide me how to find this layer?

transmissivity_singleway=name *[required]*Name of the single-way
atmospheric transmissivitymap [-]

temperaturedifference2m=name *[required]*Name of the difference map of
temperature from surface skin to about 2 m height [K]
i have Landsat 8 and meteorological data from the station(temp max, min).
Mr Yann Chemin explained for me but i did not understand.

it will be so helpful if any one can explain how to get these layers to be
able to calculate the ET in GRASS…

Regards

grass-user mailing list

grass-user@.osgeo

https://lists.osgeo.org/mailman/listinfo/grass-user

Which GRASS module do you want to use?

best regards
Helmut

Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html

grass-user mailing list
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4

The version i use currently is winGRASS 7.4. 0

I asked for the module you want to use?

-----
best regards
Helmut
--
Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html

5

Dear Helmut,

i wana use the i.evapo.mh. and i.eb.eta or actual evapotranspiration module.

Regards

···

On Tue, May 29, 2018 at 8:32 AM, Helmut Kudrnovsky <hellik@web.de> wrote:

The version i use currently is winGRASS 7.4. 0

I asked for the module you want to use?

best regards
Helmut

Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html

grass-user mailing list
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6

Hi

Have you followed the tutorial available in this link prepared by Yann:
https://trac.osgeo.org/grass/browser/grass-promo/tutorials/grass_landsat_ETa

Also attached the pdf with this email.

It gives you an overall picture on how to use ET modules in GRASS GIS to estimate actual ET.

Please give it a try and ask questions you may have.

There is an external Python script using GRASS lib, applying SEBAL on Landsat data (never tried !!)
https://github.com/wwolff7/SEBAL_GRASS/blob/master/Sebal70.py

Regards
Sajid

···

On Tue, May 29, 2018 at 8:08 AM, hindo kush <hindokush12@gmail.com> wrote:

Dear Helmut,

i wana use the i.evapo.mh. and i.eb.eta or actual evapotranspiration module.

Regards

grass-user mailing list
grass-user@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-user

On Tue, May 29, 2018 at 8:32 AM, Helmut Kudrnovsky <hellik@web.de> wrote:

The version i use currently is winGRASS 7.4. 0

I asked for the module you want to use?

best regards
Helmut

Sent from: http://osgeo-org.1560.x6.nabble.com/Grass-Users-f3884509.html

grass-user mailing list
grass-user@lists.osgeo.org
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