| Title: |
Implementation of sequential cropping into JULESvn5.2 land-surface model |
| Authors: |
Mathison, Camilla; Challinor, Andrew; Deva, Chetan; Falloon, Pete; Garrigues, Sébastien; Moulin, Sophie; Williams, Karina; Wiltshire, Andy |
| Contributors: |
Met Office Hadley Centre (MOHC); United Kingdom Met Office Exeter; University of Leeds; Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH); Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE); Centre Hospitalier Universitaire de Nice (CHU Nice); Université Côte d'Azur (UniCA); University of Exeter; European Project: 603864,FP7-ENV-2013-two-stage,FP7-ENV-2013-two-stage,HELIX(2013) |
| Source: |
ISSN: 1991-9603. |
| Publisher Information: |
CCSD; European Geosciences Union |
| Publication Year: |
2021 |
| Collection: |
HAL Université Côte d'Azur |
| Subject Terms: |
[SDE.MCG]Environmental Sciences/Global Changes |
| Description: |
International audience ; Abstract. Land-surface models (LSMs) typically simulate a single crop per year in a field or location. However, actual cropping systems are characterized by a succession of distinct crop cycles that are sometimes interspersed with long periods of bare soil. Sequential cropping (also known as multiple or double cropping) is particularly common in tropical regions, where the crop seasons are largely dictated by the main wet season. In this paper, we implement sequential cropping in a branch of the Joint UK Land Environment Simulator (JULES) and demonstrate its use at sites in France and India. We simulate all the crops grown within a year in a field or location in a seamless way to understand how sequential cropping influences the surface fluxes of a land-surface model. We evaluate JULES with sequential cropping in Avignon, France, providing over 15 years of continuous flux observations (a point simulation). We apply JULES with sequential cropping to simulate the rice–wheat rotation in a regional 25 km resolution gridded simulation for the northern Indian states of Uttar Pradesh and Bihar and four single-grid-box simulations across these states, where each simulation is a 25 km grid box. The inclusion of a secondary crop in JULES using the sequential cropping method presented does not change the crop growth or development of the primary crop. During the secondary crop growing period, the carbon and energy fluxes for Avignon and India are modified; they are largely unchanged for the primary crop growing period. For India, the inclusion of a secondary crop using this sequential cropping method affects the available soil moisture in the top 1.0 m throughout the year, with larger fluctuations in sequential crops compared with single-crop simulations even outside the secondary crop growing period. JULES simulates sequential cropping in Avignon, the four India locations and the regional run, representing both crops within one growing season in each of the crop rotations presented. This ... |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/grantAgreement//603864/EU/High-End cLimate Impacts and eXtremes/HELIX; WOS: 000613271600003 |
| DOI: |
10.5194/gmd-14-437-2021 |
| Availability: |
https://hal.inrae.fr/hal-03771308; https://hal.inrae.fr/hal-03771308v1/document; https://hal.inrae.fr/hal-03771308v1/file/Mathison_gmd-2021.pdf; https://doi.org/10.5194/gmd-14-437-2021 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.96321D6F |
| Database: |
BASE |