Introduction to DNDC Input Data Site simulations

Introduction to DNDC Input Data Site simulations Ms. Nittaya Cha-un and Mr.Uday Pimple The Joint Graduate School of Energy and Environment

Capacity Building Workshop on: “Strategic rice cultivation with energy crop rotation in Southeast Asia – A path toward climate change mitigation in the agricultural sector” 29-31 May 2013, Pullman hotel, Bangkok

DNDC Model Why DNDC ? and Why Model ? • • • •

CH4 and N2O from agricultural soils ~25% and 30% of global CO2-equi emission Developed with management levers (tillage, fertilizer, irrigation, …) for the GHGs emission, hard to measure at the field level and long-term monitoring Need to use, predict for the future and improve models at regional scale

What is DNDC ? 25%

30%

• Mainly used for modeling GHG emission from agricultural soils

20%

DNDC History • Development began in 1989 by Changsheng Li for modeling N2O emissions. • First published in 1992, first N2O emission inventory published in 1996. • Over 50 peer reviewed publications with DNDC. • Used for national GHG emission inventories in countries worldwide (e.g current NITRO Europe program for cropland, pasture and forest for entire EU).

Version of DNDC and Relevant models

• • • •

DNDC74 Daylight DNDC82 DNDC93 (Aug 2009) DNDC95 (new ver., Aug 2012)

• •

Manure-DNDC Forest-DNDC

DNDC model Operation • •

The Site Mode: Most of the parameters need to be typed in manually through the input interface The Regional Mode: Receives all of the input information from a database containing all the required input data for the simulated domain.

DNDC; version 9.3

Input Parameters Page 1. Climate

Site mode at KMUTT, Ratchaburi Campus

(2) Select, site ‘’Input’’ button

(1) Double ‘’Click’’ for start the model

(3) - Select ‘’Climate’’ button - Input Climate data

Input Parameters Input information for location and climate

Page 1. Climate 5

7

8

1

Daily meteorological data file(s) must be prepared in advance. The file(s) should have a plain text format. The climate data file can be constructed with five different formats Click “Accept”

4

2 3 5

7

6 can keep or modify the default values

8

Input Parameters Input information for soil properties

Page 2. Soil 1 2

3

4

5

When the input process is done, don’t forget clicking the “Accept” button

5

All of the soil parameters, including the defaults and the user-defined with specific field data.

Input Parameters Page 3. Cropping

1

How many years I am going to simulate totally: - 2 years

2

How many cropping systems are involved in the simulation: - 1 cropping system (ricerice rotation system)

4

How many years each cropping system lasts for: - The rice-rice system lasts for 2 years

5

How many years a cycle takes in each system: - A cycle of the rice-rice system takes 2 years

2

1

4

3 5

7

6

Total years (2): Total cropping systems (1): rice-rice Years of system (2) Years of a cycle of system (2) Crop for year 1 of the cycle: irrigated rice and rain-fed rice Crop for year 2 of the cycle: irrigated rice and rain-fed rice

Input Parameters Page 3. Cropping --> Farming Management Practices Crop

Tillage

Input Parameters Page 3. Cropping --> Farming Management Practices Fertilization

Manure Amendment

Input Parameters Page 3. Cropping --> Farming Management Practices

Page 4. Save

Run DNDC

Results DNDC

Methane emissions (kg C /ha/day) 14 12 10 8 6 4 2 0 1-Jan-10

days Simulated

Rice

8 7 6 5 4 3 2 1 0

days

1-Jan-11

1-Dec-11

Sorghum

1-Dec-11

1-Nov-11

1-Oct-11

1-Sep-11

Corn

1-Nov-11

Observed

1-Oct-11

1-Aug-11

1-Jul-11

1-Jun-11

Observed

1-Sep-11

1-Aug-11

1-Jul-11

1-Jun-11

1-May-11

1-Apr-11

1-Mar-11

1-Feb-11

1-Jan-11

1-Dec-10

1-Nov-10

1-Oct-10

1-Sep-10

1-Aug-10

1-Jul-10

1-Jun-10

1-May-10

1-Apr-10

1-Mar-10

Rice

1-May-11

Rice

1-Apr-11

1-Mar-11

1-Feb-11

Sorghum

1-Dec-10

days

1-Nov-10

1-Oct-10

1-Jan-10 1-Feb-10

Corn

1-Sep-10

1-Aug-10

1-Jul-10

1-Jun-10

1-May-10

1-Apr-10

1-Mar-10

Rice- Rice-Rice-Rice 9 8 7 6 5 4 3 2 1 0

1-Jan-10

Rice

Methane emissions (kg C /ha/day)

1-Dec-11

Fallow- Rice-Fallow-Rice

1-Feb-10

1-Oct-11 1-Nov-11

Simulated

Methane emissions (kg C /ha/day)

1-Dec-11

Rice

1-Nov-11

Observed 1-Sep-11

Fallow

1-Oct-11

1-Aug-11

1-Jul-11

1-Jun-11

1-May-11

1-Apr-11

1-Mar-11

1-Feb-11

1-Jan-11

1-Dec-10

Observed

1-Sep-11

1-Aug-11

1-Jul-11

Rice

1-Jun-11

1-Oct-10 1-Nov-10

Rice

1-May-11

1-Apr-11

1-Mar-11

1-Feb-11

1-Jan-11

1-Dec-10

Rice

1-Nov-10

1-Sep-10

1-Aug-10

1-Jul-10

1-Jun-10

1-May-10

1-Apr-10

1-Mar-10

Falllow

1-Oct-10

1-Sep-10

1-Aug-10

1-Jul-10

1-Jun-10

1-May-10

1-Apr-10

1-Mar-10

1-Feb-10

1-Jan-10

7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0

1-Feb-10

Methane emissions (kg C /ha/day)

Comparison between observed and DNDC simulation of daily pattern of CH4 emission from crop rotation system Corn- Rice-Corn-Rice Simulated

Rice

days

Sorghum- Rice-Sorghum-Rice Simulated

Rice

Long-term DNDC simulation in 2011-2030 for CH4 emission CH4 Flux in year 2010-2011

fallow-rice

corn-rice

rice-rice

sorghum-rice

14 12

kg C /ha/ day

10 8 6 4 2 0 1-ม.ค.-10 -2

1-มี.ค.-10

1-พ.ค.-10

1-ก.ค.-10

1-ก.ย.-10

1-พ.ย.-10

CH4 Flux in year 2011-2030

1-ม.ค.-11

Fallow-Rice

1-มี.ค.-11

1-พ.ค.-11

Corn-Rice

1-ก.ค.-11

1-ก.ย.-11

Rice-Rice

1-พ.ย.-11

Sorghum-Rice

1400

kg C /ha/ year

1200 1000 800 600 400 200 0

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

2030

Thank you Kob-khun-kha