[Dhsvm-users] Dhsvm-users Digest, Vol 137, Issue 2

[2330152080]

Thank you for your reply!

I have adopted your advice. But when I add this option "-D DHSVM_D8:BOOL=ON"  to the configuration , the result is same as not adding this option.

I didn’t know if I have done something wrong. Here is my diagram of how to do it. I just add this option to the option section of configuration. 

And I used the DHSVM3.1.2 version, from the official website.

Of course, I am also trying your other method, but the result has not come out yet.

------------------ Original ------------------
From:                                                                                                                        "dhsvm-users"                                                                                    <dhsvm-users-request at mailman12.u.washington.edu>;
Date: Wed, Jun 7, 2023 09:20 PM
To: "dhsvm-users"<dhsvm-users at u.washington.edu>;

Subject: Dhsvm-users Digest, Vol 137, Issue 2



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Today's Topics:

   1. Re: How to remove the DEM sink (Ed Salminen)


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Message: 1
Date: Wed, 7 Jun 2023 06:20:19 -0700
From: Ed Salminen <salminen at watershednet.com>
To: dhsvm-users at u.washington.edu
Subject: Re: [Dhsvm-users] How to remove the DEM sink
Message-ID: <2bde385e-cd98-01d1-a749-6b2dba78dc2b at watershednet.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

The problem may be that you filled sinks in your DEM in a GIS that used 
an eight direction (D8) flow direction approach, but DHSVM uses a four 
direction (D4) approach as described in the snippet you included below.

Did you run the FILL_SINKS_DHSVM.c program to prepare your DEM prior to 
running DHSVM? This will fill the sinks in the DEM using a D4 approach. 
The source code (if you don't already have it) can be found here: 
https://github.com/pnnl/DHSVM-PNNL/blob/master/DHSVM/program/FILL_SINKS_DHSVM.c

Alternatively there now appears to be a way to configure DHSVM to use a 
D8 approach. If you go to this page (https://github.com/pnnl/DHSVM-PNNL) 
and scroll to the bottom under "Experimental Surface/Subsurface Mode" it 
describes how you can enable the D8 approach when building the model 
with CMake.

I hope that helps.

E


On 6/7/2023 12:20 AM, 2330152080 wrote:

> Hello:

> I find the final surface runoff appears abnormally large in the final 

> mass balance file. You can see the first figure.

> Although I have read the Q&A about this question, but I really did't 

> know how to resolve it. (fig2)

> I hope you can give me some advice. Thank you very much for your time.

> Shutao Wang

>

>

>

> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? fig1

>

> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?fig2

>

>

>

>

> _______________________________________________

> Dhsvm-users mailing list

> Dhsvm-users at u.washington.edu

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-- 
Ed Salminen, Hydrologist
Watershed Professionals Network LLC
PO Box 8 | Mount Hood Parkdale, OR 97041
(541) 490-6644
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