Soiltrec training event
PIHM WORKSHOP DATES: July 16 - 17, 2012
LOCATION: Chania, Crete, Greece
ORGANISERS: Prof. Chris Duffy (cxd11 @ psu.edu)
TECHNICAL
CONTACTS: Xuan Yu (xxy113 @ psu.edu), Gopal
Bhatt (gxb913 @ psu.edu), Lorne Leonard (lnl3 @ psu.edu), Yu Zhang (yzz130 @ psu.edu), Evan Thomas (emt175 @ psu.edu), Lele Shu (lzs157 @ psu.edu), Yi Mei (yi.mei @ vanderbilt.edu), Yuning Shi (yzs123 @ psu.edu)
OUTLINE AND OBJECTIVES
PIHM related
workshop will kick off with a detailed overview of Penn State Hydrologic
Modeling System. The objective of the talk would be to introduce unique aspects
of the hydrologic modeling system PIHM: (a) PIHM [Qu & Duffy, Kumar et. al.], (b) Model and Data integration through PIHMgis
[Bhatt et. al.] and PIHM-webservices [Lorne et. al.].
The talk will also outline various developments surrounding PIHM hydrology (a)
Sediment, PIHM-Hydro [Li et. al], (b) PIHM-Flux [Shi et. al], (c) ‘age’ of
water (Duffy, Bhatt et. al), (d) PIHM-BGC (Yu et. al.), (e) Dissolved Organic
Carbon (Mei et. al). It will also summarize some of the key findings from the
multi-scale applications of PIHM under a wide range of climate and
environmental conditions.
We will have two
hands-on sessions during the workshop that will be geared towards providing
experiences in using PIHM for modeling watershed hydrological cycle. Participants
will learn to use a customized GIS interface to PIHM (called PIHMgis) for (i) automated ingestion of model parameters from national
databases, (ii) conditional domain decomposition of the watershed for numerical
simulation, (iii) performing multistate hydrologic simulations and calibration
and (iv) visualization of model results. First, we will go over the PIHM
workflow to familiarize ourselves with the framework. PIHM workflow will be
illustrated using the v-catchment numerical watershed a standard test case used in many integrated models. Various data processing steps
and implemented algorithm in the background will be explained to provide a
clear understanding of the model application setup.
We will work on
developing two model applications from scratch. Data necessary will be
provided. Objective of this exercise would be to go over all the processing
steps one by one during the workshop. Here we will use (a) Susquehanna-Shalehills Critical Zone Observatory (SSHCZO) and (b) Young Womans Creek watershed for the development of model
applications. Shalehills is a 0.08 sq. km watershed
and Young Womans Creek is a relatively large-scale
watershed with a drainage area of 230.7 sq. km. Since the processing steps are
atypical for a numerical setup you will be able to use the tool for building an
application for the watershed of any scale. Larger watersheds are possible but are not feasible on laptops. A discussion of the necessary data and data formats will be made.
The workshop will
also discuss aspects related to the PIHM hydrology calibration. Covariance Matrix Adaptation Evolutionary
Strategy (CMA-ES) based calibration tool has been developed for the calibration
of PIHM. PIHM-PCS is an evolutionary algorithm based tool that uses unique partition
calibration strategy (PCS) strategy to calibrate physically meaningful
parameters. The calibration tool uses OpenMPI and
therefore its use is suitable using multi-processor architecture. Step-wise
instruction to setup a calibration simulation on a high performance-computing
environment will be described.
We will build on
hydrology simulation by extending the model to perform solute transport and ‘age’ simulation. ‘age’
of water simulation requires few additional inputs. We will go through the
steps necessary to setup those inputs.
PREPARATION FOR THE PIHM WORKSHOP SESSIONS
We will be going
over a lot of content during the workshop. So it is critical to take care of
few things before the workshop to allow us to get started on the modeling. That
means getting your laptop ready to be able to use PIHM tools and have data that
we will be using loaded. It will be a good idea to collaborate and work in a
group on the problems we will be doing.
1. Download PIHMgis software
PIHMgis is
available for download at the following link. There will you find options to
select appropriate version of PIHMgis based on the operating system that you
are running on your computer. Sorry, we have not ported it to iPhone or iPad yet. PIHMgis has been tested on widely used operating
systems that include 32-bit Windows XP, Vista, 7 and Max OS X Leopard, Snow
Leopard and Lion.
http://www.pihm.psu.edu/pihmgis_downloads.html
2. Install PIHMgis software on your laptop
Installation of
PIHMgis is fairly easy. Detailed PIHMgis installation instructions for both
Macintosh and Windows are available at the following link. The guide describes
what you need to do in order to get PIHMgis up and running on your computer.
Please follow the instructions to ensure that you are able to load PIHMgis
toolbar.
http://www.pihm.psu.edu/Installation_Guide.pdf
3. Download Datasets
Here are the
links to the raw datasets that we will be using for the development of PIHM applications
during the workshop. You just want to have them downloaded on your computer at
an easily accessible location. For example “CreteWorkshop”
in your home directory could be a choice to store these files.
SSHCZO (0.08 sq. km): http://www.pihm.psu.edu/PIHMgis_v2.3/pihmgisSSHCZO.zip
Young Woman Creek (230.7 sq. km): http://www.pihm.psu.edu/PIHMgis_v2.3/pihmgisYW.zip
4. Documents
You may also
download electronic copies of the following documents here. A printed copy of the PIHM workflow will
be provided during the
workshop so that you can take notes.
PIHMgis tutorial: http://www.pihm.psu.edu/PIHMgis_v2.3_Tutorial_VCatchment.pdf
PIHM input data format: http://www.pihm.psu.edu/PIHM2x_input_file_format.pdf
PIHM output data
format: http://www.pihm.psu.edu/PIHM2x_output_file_format.pdf
5. Source Codes
PIHM 2.2 source code: http://www.pihm.psu.edu/pihm_downloads.html
PIHM-age source code: http://www.pihm.psu.edu/pihm_age.html
PIHM-PCS source code: http://www.pihm.psu.edu/pihm_pcs.html
RELEVENT PUBLICATIONS
http://www.pihm.psu.edu/tab_publication.html