ARTICLE I – SCOPE
This Implementing Arrangement describes the cooperative
scientific, technical, engineering and administrative activities
to be undertaken by the American Institute in Taiwan (AIT) and
its designated representative, the University Corporation for
Atmospheric Research (UCAR), to provide consultancy services for
the Enhancement of the CWB Data Assimilation System. This is a
cooperative effort between the Taipei Economic and Cultural
Representative Office in the United States (TECRO), through its
designated representative, the Central Weather Bureau (CWB), of
the Ministry of Transportation and Communications (MOTC) and
AIT, through its designated representative, UCAR. This
Implementing Arrangement pertains to the Agreement (dated
January 12, 2005, hereinafter referred to as the Agreement)
between TECRO and AIT for Technical Cooperation associated with
the Establishment of Advanced Data Assimilation and Modeling
Systems and is a part of the Agreement.

ARTICLE II – AUTHORIZATION
The activities described in this Implementing Arrangement will
be carried out under the general terms and conditions
established by the Agreement. The Agreement was entered into by
the parties pursuant to the Taiwan Relations Act of April 10,
1979, Public Law 96-8 (22 U.S.C.§3301 et seq.).

ARTICLE III – SERVICES
Taiwan is extremely vulnerable to the passage of tropical
cyclones (TCs). In a typical year, three to four typhoons have
an impact on the island, with one or two making landfall.
However, a typhoon does not need to make direct landfall for
Taiwan to experience damaging winds and heavy rains. The
forecasting of typhoons around Taiwan is a very challenging
task, because Taiwan is surrounded by ocean, where there are few
traditional meteorological observations. AIT’s designated
representative, UCAR, will provide software and consulting
services for the implementation of an advanced data assimilation
system (e.g., WRFVar) into CWB’s operational environment. AIT’
s designated representative, UCAR, will perform WRF-based EnKF
data assimilation and assess its impact on typhoon prediction,
in close collaboration with TECRO’s designated representative,
CWB. AIT’s designated representative, UCAR, will also provide
training on ground-based GPS water vapor retrieval to TECRO’s
designated representative, CWB. The technical cooperation
between the designated representatives of AIT and TECRO will be
performed in accordance with the terms and conditions of the
Agreement and this Implementing Arrangement No. 3.
This Implementing Arrangement is specifically focused on: a)
providing technical consultation and software for the
operational implementation of the WRFVar data assimilation
system, b) performing WRF-based EnKF data assimilation
experiments and assessing its impact on typhoon prediction, c)
training of ground-based GPS water vapor retrieval software, and
d) Continued interaction on WRFVar data assimilation systems.
The technical cooperation to be undertaken under the auspices of
this Implementing Arrangement is defined by the following
tasks. Task details, including specific work to be performed,
performance period, and estimated cost for each task are
contained in the attached Statement of Work.
A summary description of the tasks to be performed during this
period is provided below.

Task #1 – Support and enhancement of the WRFVar system for CWB
operation
The WRFVar data assimilation system, developed by AIT’s
designated representative, UCAR, will be implemented on CWB’s
newly procured IBM computer by TECRO’s designated
representative, CWB. AIT’s designated representative, UCAR,
will provide support as necessary to TECRO’s designated
representative, CWB, to ensure successful operation of WRFVar at
CWB. UCAR will provide technical assistance on the following
sub-tasks: (a) design the WRFVar operational configuration, (b)
perform short duration WRFVar/WRF testing, and (c) support CWB’
s effort on pre-operational tests for a longer period of time.

Task #2 – Exploration of the WRF-based Ensemble Kalman Filter
(EnKF) data assimilation
In 2007, NCAR staff will collaborate with CWB staff on the
testing of WRF-based ensemble Kalman filter (EnKF) data
assimilation system for a typhoon case in the vicinity of
Taiwan. In particular, we will assess the impact of COSMIC GPS
radio occultation (GPSRO) soundings on the prediction of a
typhoon case, and compare the performance between WRF-based EnKF
system and WRFVar. AIT’s designated representative, UCAR, will
conduct the following three sub-tasks: a) WRF-based EnKF
assimilation of COSMIC GPSRO data on a typhoon case, b)
comparison between WRFVar and EnKF, and c) training of WRF-based
EnKF data assimilation system.

Task #3 – Training on Ground-based GPS PW data processing

CWB currently operates a network of approximately 80
ground-based GPS receivers. These receivers can potentially
provide real-time precipitable water (PW) monitoring, which is
important for short-range weather prediction. CWB is interested
in establishing capability to process data from the CWB
ground-based GPS network for PW retrieval. UCAR staff, Dr. John
Braun, will travel to Taiwan for the period of one week, and
provide training on GPS PW retrieval. CWB is responsible for (i)
obtaining the necessary third party software (e.g., Bernese
5.0), (ii) necessary computing facility, (iii) ground-based GPS
data from the CWB network. UCAR staff will provide necessary
software developed by UCAR and the training on GPS PW retrieval.
Task #4 – Continued Interaction on WRFVar System
Because the tasks proposed for 2007 require close collaboration
between the CWB and NCAR/UCAR staff, the exchange of information
and progresses between CWB and NCAR/UCAR in a timely manner is
crucial. Effective and efficient communication methods, such as
the web pages for the project, the data transfer “ftp” command
etc. must be established and updated timely and regularly. The
exchange of visit between CWB and NCAR/UCAR staff are also
necessary to ensure the smooth execution of this collaboration.
AIT’s designated representative, UCAR, will conduct the
following two sub-tasks: a) Updated and improve the CWB project
web pages at NCAR, and b) site visit to CWB.

ARTICLE IV – FINANCIAL PROVISIONS
TECRO is required to reimburse AIT for all costs incurred by AIT
’s designated representative, UCAR, in association with the
project covered by this Implementing Arrangement. AIT will
transfer to UCAR all payments made by TECRO to AIT for costs
incurred by UCAR in association with this Implementing
Arrangement.
The total cost for activities described in this Implementing
Arrangement is mutually agreed to be U.S. $120,000. TECRO agrees
to transfer fifty percent of the funds to AIT within one month
after the signing of this agreement, with the remaining fifty
percent to be transferred upon completion of the tasks set forth
in this Implementing Arrangement No. 3. It is agreed and
understood that the payment will be provided in U.S. dollars.

ARTICLE V – INTELLECTUAL PROPERTY CONSIDERATIONS
Intellectual Property - The parties agree that no Intellectual
Property or other Proprietary Information will be provided under
this Implementing Arrangement. Intellectual Property and
Proprietary Information are defined as software, designs,
processes, drawings, data, and modeling systems which includes,
but is not limited to, all versions, derivative works, updates,
improvements, modifications, enhancements and releases thereof,
patents, patent applications, continuations-in-part, inventor
rights in the United States and any foreign countries and
applications therefore. In the event that any activities under
this Implementing Arrangement require the use of the other party
’s Intellectual Property or Proprietary Information, the
parties shall in good faith enter into negotiations to reduce to
a mutually agreeable writing the obligations and terms
associated with such understandings.
Public Domain Technology - The Weather Research and Forecasting
(WRF) model, as well as its associated data assimilation systems
(e.g., WRFVar, WRF-based EnKF), were developed by the National
Center for Atmospheric Research (NCAR) with significant
participation of the broad scientific community. The WRF model,
WRFVar and WRF-based EnKF systems are in the public domain. Both
parties agree that the WRF model, WRFVar and WRF-based EnKF
systems and any modifications, revisions, enhancements, updates,
or improvements shall remain in the public domain and are not
considered Proprietary Information.

ARTICLE VI – EFFECTIVE DATE, AMENDMENT, AND TERMINATION
This Implementing Arrangement takes effect 1 January 2007 and
the completion date of tasks described in this Implementing
Arrangement is 31 December 2007. This Implementing Arrangement
may be amended and/or terminated in accordance with the terms
and conditions of the Agreement.


FOR THE TAIPEI FOR THE AMERICAN
ECONOMIC AND INSTITUTE
CULTURAL IN TAIWAN
REPRESENTATIVE
OFFICE IN THE UNITED
STATES

(黃偉) (Barbara Schrage)
Name of person signing Name of person signing
Deputy Representative Managing Director
Position Position
7/11/07 6/13/07
Date Date