Status of the CWB-NCAR
Project
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Task |
Title |
Name |
Status |
Date |
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1 |
Task #1 – Support for the WRFVar component of the
CWB operational system and preparation for the upgrade of WRFVar 3.0 |
Guo, M-H Chen, Eric Chiang, Cheryl |
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1.1 |
Support for the WRFVar component of CWB operational system: -
Guo continues
to respond to questions coming from CWB staff, particularly Eric. -
Guo also
provides support to Maxine Chen -
This is
on-going support work throughout the year -
A major goal
this year is to ensure the operation of WRF-Var (Version 2.1) at CWB with
CV=5, 6-h cycling |
Guo |
On-going |
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1.2 |
Preparation for
running WRFVar 3.0 in CWB |
Guo, Eric |
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1.2.1 |
Install and
compile the WRFVar 3.0 code on CWB IBM -
Eric downloaded WRF 3.0 and WRF-Var 3.0, and they are
working for the CWB 45 km domain. |
Guo, Eric |
done |
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1.2.2 |
Test the WRFVar
3.0 with the exact same configuration used in WRFVar2.1 -
For this test, we need to identify a case for testing -
Suggest comparing the June 2007 case for these two
versions. -
This will be primarily a CWB task, with NCAR support |
Eric, Guo |
To be done |
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1.2.3 |
Test the
accessory functions of WRFVar 3.0 [Gen-BE, error
tuning utilityÉ] -
This is primarily a CWB task. CWB staff should test
options/functions of interest, and let NCAR staff know, if there are
problems. -
NCAR staff will trouble shoot. |
Eric, Cheryl, Guo |
To be done |
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1.2.4 |
Complete the retrospective 3-hour
cycling run tests with WRFVar 3.0 - Maxine
Chen found that CWB and NCAR Version 2.2 produce different results.
Currently, Guo and Maxine are performing checks. - An
important job is to perform 3-h cycling in preparation for the 27/9/3 km
domains. - This
should be done by CWB staff with NCAR support. - Should
have a teleconference on this topics. - Suggest
that we also perform the test on June 2007 case. |
Eric, Cheryl, Guo, Maxine Chen |
To be done |
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1.3 |
Develop the capability of the ground-based GPS ZTD data
assimilation This task will be primarily carried out by Guo. He will
begin the work soon. Ya-Ting can perform some tests at CWB before coming to
NCAR in July. This should be discussed in the next teleconference. |
Guo, Braun |
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1.3.1 |
Development and implementation of forward, tangent linear, and adjoint code for ZTD assimilation |
Guo, Ya-Ting |
TBD |
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1.3.2 |
Testing the capability of assimilating CWB GPS ZTD data |
Guo, Ya-Ting |
TBD |
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1.3.3 |
Comparing the results with the GPS PW data assimilation |
Ya-Ting, Guo |
TBD |
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1.3.4 |
Preparation of a report to summarize the results |
Guo |
TBD |
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2 |
Task #2 – Preparation of the WRF/DART ensemble
adjustment filter data assimilation system for semi-operational testing at
CWB |
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2.1 |
Upgrade to WRF 3.0 |
Jeff Anderson, Nancy Collins |
done |
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2.2 |
Implement forward observation operator for satellite
retrieved thickness into WRF/DART - Coding
is finished for the thickness operator, and surface observations operator. - Hui
Liu will provide the code to Y-T Lin for testing |
Hui Liu |
Essentially done |
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2.3 |
Improve the computing efficiency of WRF/DART and perform
one-month assimilation and compare with 3DVAR - Most
of the work is done - Hui
Liu will work with Y-T Lin for the one-month testing - Need
to discuss specification for the one-month testing. In particular, we need to
coordinate the work with WRF-Var, so that we can compare the performance
between WRF/DART and WRF-Var over a one-month period. - Also,
we need to assess the impact of: (a) COSMIC GPS RO data, (b) 3-h versus 6-h
cycling. - Should
have a teleconference on this. |
Hui Liu |
On-going |
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2.4 |
Assimilation and ensemble forecast for typhoon Krosa and
Wipha of 2007 - Y.-T.
Lin has done the Krosa case. Y-T Lin should provide the results (via .ppt
file) to NCAR for review. - Some
model runs blew up for Y-T LinŐs testing at CWB. Need to work with Hui Liu - Hui
will begin the Wipha case soon |
Hui Liu, Y-T Lin |
On-going |
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3 |
Near Real-Time Data Collection and Display of GPS
Precipitable Water Vapor Estimates in Support of TIMREX |
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3.1 |
Real-time data collection - Currently,
CWB is producing 2 hr data set, and data is delivered after 1 hr. The
processing begins 5 min after collection, and takes another 30 min to finish.
Therefore, the total data latency is 3 hr and 35 min. This is not optimal
(for mesoscale application). It would be desirable to shorten the latency. - CWB
has begun testing LAPDOG, and will try to produce 1 hr data set, and to
speed-up data delivery. - We
have met the contract requirements. But, John will continue to provide
support. |
Braun |
Essentially done. Some support |
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3.2 |
Real-time data analysis - Data
Processing software is running on a machine at CWB - Completed
35 min after data delivery - The
data processing can benefit from increased memory. CWB will purchase and
increase memory. This can reduce the processing time from 35 min to 20 min. |
Braun |
Done |
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3.3 |
Web Display - An
off-line version has been developed. - Need
to port to CWB and turn it online. - Currently,
we are waiting for a CWB machine (should have a teleconference) to be
available. Also, the web page will evolve after receiving user feedback. |
Maggie, Braun |
Mostly done. Additional updates |
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3.4 |
Interpolating surface observations - John
Braun rwrote the code - John
may modify the code to detect outliers - Code
is working on CWB machine - J.-S.
Hong and Ya-Ting are running PW assimilation with WRF 3D-Var using data
produced from this system |
Braun, |
Essentially done |
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3.5 |
Post Processing: - Running
operationally at CWB - Currently,
it is using the rapid orbit from IGS. It can also be run with IGS final
orbit, which will require more waiting time. - Currently,
post processing is run one-day after real-time. - DonŐt
have enough compute power for post-processing. This can benefit from a better
machine at CWB. - should
have a teleconference to discuss this task. |
Braun |
Essentially done |
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3.6 |
Technical Support |
Braun |
On-going |
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4 |
Task #4 – Continued interaction on WRF data
assimilation systems |
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4.1 |
Update and improve the CWB project web pages on both the
CWB and the UCAR sides - Guo
will develop a wiki at NCAR. - All
project members can have write access to the wiki to report status of their
task |
Guo |
On-Going |
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4.2 |
Site visit to CWB - Kuo
may visit CWB on 3rd week of May - Need
to decide dates for the final view and decide who should attend from NCAR. - Need
to set the dates for Cheryl Terng and J-S HongŐs visit to NCAR. The
objectives are to review the various tasks, and to discuss next yearŐs plan.
We expect this to take place in the
September/October 2008 time frame. - Check
whether Ben Jou will visit NCAR (because Ben contribute to the GPS work).
(Bill K. will talk with Ben) |
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5 |
Task #5 – Support the installation and testing of
the NCAR High-Resolution Land Data Assimilation System (HRLDAS) |
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5.1 |
Lectures and training -
Fei Chen
visited CWB for two days, and gave a seminar on land surface modeling - 4
day tutorial by Michael to 8-15 people, including CWB, university students
and scientists. - Michael
prepared one month and a half forcing data for testing, for the period of
June 15 – July 31 2007 |
Fei Chen, Michael B. |
Done |
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5.2 |
Implementation,
testing, and evaluation of the offline HRLDAS: - J.-S.
Hong wants to try on his own. Therefore, CWB does not want NCAR staff to do
all the work. - Need
to work on Different data types. Still working with them on what are
available. This includes gridded precipitation data from CWB, 8-km data
(60S-60N) CMORPH precipitant data, and solar radiation data. - This
is done on all three model domains (45/15/5). - Need
a teleconference to review status. If necessary, NCAR staff may step in and
perform the task as required. |
Michael B., J.-S. Hong, Vivian Tsay |
On-going, continued interaction with J.-S. Hong |
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5.2.1 |
NCAR scientists will
provide suggestions for the implementation of the HRLDAS in CWB's IBM machine
by CWB staff - We donŐt know whether the code is working on
the CWB IBM. - The code is running on CWB linux machine - There are security issues related to CWBŐs
IBM - should have teleconference to review this. |
Micharl Barlage |
On-going |
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5.2.2 |
Test the HRLDAS in
the CWB environment using NCAR's data. NCAR will run HRLDAS at NCAR for a
period of one week, to evaluate it and to make sure that the simulation of
HRLDAS at CWB for the same time period produces the same results as NCAR
HRLDAS simulations -
NCAR side of
the work has been done. - One month and a half month data have been
prepared - Need to know the status of the IBM, and CWBŐs
results, so that we can compare |
Michael Barlage, J.-S. Hong |
On-going |
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5.3 |
Ingest Taiwan local
data in HRLDAS and perform an evaluation: - This is a task primarily to be carried out by
CWB staff - Need to know the status of this task at CWB |
J.-S. Hong |
On-going |
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5.4 |
Provide consultant/technical
support to CWB staff in their performing an offline HRLDAS experiment: -
Need to know
the status of this work at CWB - Michael to provide support as needed |
J.-S. Hong |
On-going |
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5.4.1 |
NCAR will provide
suggestions about the data needed to evaluate HRLDAS results: -
CWB got flux
tower data - Need to know what data are available to CWB
for assimilation |
Michael B. |
On-going |
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5.4.2 |
NCAR will help with
an evaluation conducted by CWB to compare HRLDAS results with available
observations, and provide suggestions to adjust HRLDAS parameters according
to the evaluation results -
Need to review
status - Identify availability of MODIS data products
and local land cover data |
Michael Barlage, J.-S. Hong |
On-going |
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- J.-S.
Hong will be visiting NCAR, some time in September 2008 - Should
discuss the work plan and J.-S. HongŐs visit - We
need a teleconference to coordinate TASK #5 soon |
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