Advancing Land Surface Model Development and Collaboration
This project, CMDV.Land, aims to enhance collaboration among NGEE Arctic, NGEE Tropics, and ACME for faster integration of process model developments. Liaison positions and regular group activities support the design of a common interface for models like FATES, PFLOTRAN, and BeTR. Design requirements focus on coupling ALM with external models and supporting data exchange and I/O capabilities. Software engineers are working on implementing designs for hydrology and dynamic vegetation, fostering innovation and best practices in software engineering.
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Presentation Transcript
CMDV - Land W.J. Riley R.L. Leung, P.E. Thornton Jennifer Holm, Ryan Knox, Teklu Tesfa, Gangsheng Wang
Goals To facilitate interactions and collaboration on land surface model development activities among NGEE Arctic, NGEE Tropics, and ACME Enable process model developments tested within the NGEEs to be more rapidly applied in ACME At the same time, ACME innovations in process representation and sub-grid structure will be more readily accessible to the NGEEs
Liaison Positions Four 0.5 FTE liaison positions Software engineer positions: Hydrologic model developments (T. Tesfa, PNNL) Vegetation model developments (R. Knox, LBNL) Scientist developer positions Biogeochemistry and thermal-hydrology (G. Wang, ORNL) Global vegetation dynamics (J. Holm, LBNL) Detailed guidance for communication across projects, timelines, and development and software tasks The CMDV liaisons are working closely with the land software engineer (G. Bisht) to ensure efficient coupling strategies and code and methods sharing
Activities Group is meeting regularly Designing common interface for components: FATES ecosystem demography PFLOTRAN thermal + hydrology BeTR reactive transport VSFM hydrology New models as they become needed Maintain timeline for development across efforts
Design requirements for an Interface 1. Couple ALM with multiple external models (e.g. FATES, PFLOTRAN, BeTR, VSFM, ). 2. Ability to exchange data at ALM s various subgrid hierarchy structure (G/T/L/C/P level). 3. Ability to call an external model multiple times within a single ALM time integration loop. 4. I/O support of data from external models. BeTR R E F A T VSFM ALM ALM FATES N C I E Model-1 Model-2 PFLOTRAN
S/W Engineer for Hydrology (Teklu) Implement designs for explicit and subgrid spatial structures Assist with implementing new hydrological parameterizations (e.g., preferential flow) Assist with interface design for thermal, hydrology, vegetation, and subsurface BGC modules Support testing and evaluating hydrological approaches Define and adopt best practices for s/w engineering
S/W Engineer for Dynamic Vegetation (Ryan) Increase ACME and FATES modularity and build and maintain interfaces Integrate and test model developments in FATES that are funded by NGEE-Arctic, NGEE-Tropics, ACME, and other TES lab and university projects Couple BGC, nutrient competition, and plant hydraulics into FATES for global application Define and adopt best practices for s/w engineering
Developer for NGEE-Arctic Efforts (Gangsheng) Define science requirements for PFLOTRAN implementation and integration with vegetation components Develop a microbe-explicit BGC module Implement global PFLOTRAN
Developer for Dynamic Vegetation (Jennifer) Develop extra-tropical vegetation parameters and structures in FATES Develop vegetation demography components Integrate land benchmarks for demography and dynamic vegetation into ILAMB, evaluate ALM- FATES Test within ALM-FATES emergent biogeographic and demographic patterns Perform numerical experiments with ALM-FATES
Summary Good progress on interface design for four current and future modules Regular calls within group progressing well Ongoing productive interactions with ALM s/w engineering BeTR R E F A T VSFM ALM ALM FATES N C I E Model-1 Model-2 PFLOTRAN
