Gemma Teresa T. Narisma, PhD Faye T. Cruz, PhD€¦ · Faye T. Cruz, PhD Regional Climate Systems...
Transcript of Gemma Teresa T. Narisma, PhD Faye T. Cruz, PhD€¦ · Faye T. Cruz, PhD Regional Climate Systems...
Regional Climate Modeling
and Needs in the Philippines
Gemma Teresa T. Narisma, PhD
Faye T. Cruz, PhD
Regional Climate Systems Program
Manila Observatory and
Ateneo de Manila University
The Jesuits' Manila observatory was founded in 1865 for the purpose of weather prediction. It later expanded its scientific pursuits to include seismology and astronomy.
Fr. Federico Faura, SJ (1840–
1897), founded the Observatorio Meteorologico de Manila to study
the typhoons that
plagued the Far East.
Analyze past and
future climate
changes that
endangers local
ecosystems, and
communities
http://www.aboutrice.com/facts/fact08.html
NYTimes
REGIONAL CLIMATE SYSTEMS PROGRAM
J.B. Dado
Regional Climate Systems GOALS Regional climate
change and variability
Determine the historical and
future changes in climate in the Philippines and Southeast Asia
High resolution local climate
impacts
Do high resolution
climate science that can
interface w/ other sectors, inc energy, health, and
local planning
Forecasting for disaster risk
management
Develop a Manila
Observatory atmospheric database for immediate forecast for
disaster response
Assessing model skill of NHRCM in capturing the seasonal variability
in the Philippine climate
Faye Cruz 1, Hidetaka Sasaki 2, Gemma Narisma 1,3
Manila Observatory, Quezon City, Philippines Meteorological Research Institute, Tsukuba, Japan
Ateneo de Manila University, Quezon City, Philippines
October 2013
NHRCM model tends to have a warm and dry bias over the Philippines.
Model simulation:
• Domain: Philippines, 50 km resolution
• Boundary forcing data: 2° ECMWF ERA-Interim
• Analysis period: June 1998 – May 2007
• 9 x 14-month runs (first 2 months discarded)
NHRCM KF CRU
°C
TRMM NHRCM KF
mm/day m/s
CRU NHRCM KF
TRMM NHRCM KF
JJA Temp
JJA Precip
DJF Temp
DJF Precip
Model is warmer and drier but captures observed seasonal cycle.
18#
21#
24#
27#
30#
0#
5#
10#
15#
20#
Jan# Feb# Mar# Apr# May# Jun# Jul# Aug# Sep# Oct# Nov# Dec#
Tempe
rature)(C
))
Rainfall)(m
m/day))
Month)
West)Luzon)
APHRODITE# NHRCM#KF# NHRCM#Grell# APHRODITE# NHRCM#KF# NHRCM#Grell#
14#
18#
22#
26#
30#
0#
5#
10#
15#
20#
Jan# Feb# Mar# Apr# May# Jun# Jul# Aug# Sep# Oct# Nov# Dec#
Tempe
rature)(C
))
Rainfall)(m
m/day))
Month)
Central)Visayas)
APHRODITE# NHRCM#KF# NHRCM#Grell# APHRODITE# NHRCM#KF# NHRCM#Grell#
15#
20#
25#
30#
0#
5#
10#
15#
Jan# Feb# Mar# Apr# May# Jun# Jul# Aug# Sep# Oct# Nov# Dec#
Tempe
rature)(C
))
Rainfall)(m
m/day))
Month)
West)Mindanao)
APHRODITE# NHRCM#KF# NHRCM#Grell# APHRODITE# NHRCM#KF# NHRCM#Grell#
15#
20#
25#
30#
0#
10#
20#
30#
Jan# Feb# Mar# Apr# May# Jun# Jul# Aug# Sep# Oct# Nov# Dec#
Tempe
rature)(C
))
Rainfall)(m
m/day))
Month)
East)Mindanao)
APHRODITE# NHRCM#KF# NHRCM#Grell# APHRODITE# NHRCM#KF# NHRCM#Grell#
15#
20#
25#
30#
0#
10#
20#
30#
Jan# Feb# Mar# Apr# May# Jun# Jul# Aug# Sep# Oct# Nov# Dec#
Tempe
rature)(C
))
Rainfall)(m
m/day))
Month)
East)Luzon)
APHRODITE# NHRCM#KF# NHRCM#Grell# APHRODITE# NHRCM#KF# NHRCM#Grell#
West Luzon
West Mindanao East Mindanao
Central Visayas
East Luzon
Analysis of the performance of
RegCM3 downscaling over multiple
locations in the Philippines
Gemma NARISMA1,2, Julie DADO1, Faye CRUZ1
1Regional Climate Systems Program, Manila Observatory, Philippines
2Atmospheric Science Progra, Ateneo de Manila University,
Philippines
How good are regional
climate models in
downscaling climate for local
planning applications?
• Model: RegCM3
• ECHAM5 GCM, A1B Scenario
• 40km resolution
• Kuo Cumulus Convective Parameterization
• Zeng Ocean Flux Parameterization
• Model run: 1961-1990
10km
12km
20km
12km Metro Manila
Albay
Leyte
Cagayan de Oro
Modified Coronas Atlas (Kintanar, 1984)
Type I climate (two pronounced season with dry period from November to April and wet period from May to October) Type II climate (no dry season with a very pronounced maximum rainfall during the months of November–December); Type III climate (seasons not very pronounced with a relatively dry period from November to April, as in Type I); Type IV climate with rainfall more or less evenly distributed along the year
http://kidlat.pagasa.dost.gov.ph/cab/climate_change/images/ClimateMap.JPG
1 2
4
0 50 100 150 200 250 300 350 400
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rai
n (m
m)
1
0 50 100 150 200 250 300 350 400
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rai
n (m
m)
2
0 50
100 150 200 250 300 350 400
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Rai
n (m
m)
4 2
RAINFALL RESULTS
1 2
4
2
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 50
100
150
200
250
300
350
400
450
METRO MANILA
PAGASA RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 15
30
45
60
75
90
105
120
135
150
165
180
195
210
225
240
CAGAYAN DE ORO
PAGASA RegCM3 RAINFALL HISTOGRAMS
Occurrence of high rainfall amounts that are not in observed
data
1 2
4
0 250 500 750
1000 1250 1500
Jan
Feb
Mar
Apr
May
Jun
Jul Aug
Sep
Oct
Nov Dec
Mo
nthl
y To
tal (
mm
)
METRO MANILA
PAGASA RegCM3
0
100
200
300
Jan
Feb
Mar
Apr M
ay Ju
n Ju
l Aug
Sep
Oct
Nov Dec
Mo
nthl
y To
tal (
mm
)
CAGAYAN DE ORO
PAGASA CdO RegCM3 CdO
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 50
100
150
200
250
300
350
400
450
METRO MANILA
PAGASA RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 15
30
45
60
75
90
105
120
135
150
165
180
195
210
225
240
CAGAYAN DE ORO
PAGASA RegCM3
Modelled high precipitation that are not in observed explains overestimation during rainy
season
1 2
4
2
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 50
100
150
200
250
300
350
400
450
METRO MANILA
PAGASA RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 15
30
45
60
75
90
105
120
135
150
165
180
195
210
225
240
CAGAYAN DE ORO
PAGASA RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 30
60
90
120
150
180
210
240
TIWI-MALINAO, ALBAY
Aphrodite RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 20
40
60
80
100
120
140
160
SILAGO, LEYTE
Aphrodite RegCM3
RAINFALL HISTOGRAMS
1 2
4
2
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 30
60
90
120
150
180
210
240
TIWI-MALINAO, ALBAY
Aphrodite RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 20
40
60
80
100
120
140
160
SILAGO, LEYTE
Aphrodite RegCM3
RAINFALL HISTOGRAMS
0 100 200 300 400 500
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug Se
p O
ct Nov
Dec Mo
nthl
y To
tal (
mm
) TIWI-MALINAO, ALBAY
Aphrodite V1101R2 RegCM3
0
100
200
300
400
Jan
Feb
Mar
Apr
May
Jun
Jul Aug
Sep
Oct
Nov Dec
Mo
nthl
y To
tal (
mm
)
SILAGO, LEYTE
Aphrodite V1101R2 RegCM3
Model fails to capture high precip, leads to underestimation in rainy season for Climate Type 2
1 2
4
2
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 50
100
150
200
250
300
350
400
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METRO MANILA
PAGASA RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 15
30
45
60
75
90
105
120
135
150
165
180
195
210
225
240
CAGAYAN DE ORO
PAGASA RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 30
60
90
120
150
180
210
240
TIWI-MALINAO, ALBAY
Aphrodite RegCM3
0.00% 0.01% 0.10% 1.00%
10.00% 100.00%
0 20
40
60
80
100
120
140
160
SILAGO, LEYTE
Aphrodite RegCM3
RAINFALL HISTOGRAMS
1 2
4
2
0"50"100"150"200"250"300"350"400"
Jan"Feb"Mar"Apr"May"Jun" Jul" Aug"Sep"Oct"Nov"Dec"
Rai
n (m
m)
1"
0"50"100"150"200"250"300"350"400"
Jan"Feb"Mar"Apr"May"Jun" Jul"Aug"Sep"Oct"Nov"Dec"
Rai
n (m
m)
2"
0"50"
100"150"200"250"300"350"400"
Jan"Feb"Mar"Apr"May"Jun" Jul"Aug"Sep"Oct"Nov"Dec"
Rai
n (m
m)
4"
SIMILARITY IN CHARACTERISTICS POSSIBLY ACCORDING TO CLIMATE TYPES
Urban Expansion Impacts on Southwest Monsoon Rainfall
Julie Mae Dado1,2, Gemma Narisma1,2, and Faye Abigail Cruz2
1Ateneo de Manila University, Quezon City, Philippines 2Regional Climate Systems, Manila Observatory, Quezon City,
Philippines
Courtesy of MO Center for Environmental Geomatics
1972 2001
• Model: MM5 with NOAH LSM
• Area of study: Metro Manila 4 nested domains
• Boundary Condition CDAS – NNRP
• Schemes Cumulus Parametrization
Kain Fritsch (D01) Grell (D02, D03, D04)
PBL MRF
• July-August- September
METHODOLOGY
D01
45km
D02
15km
D03
5km D04 1.67k
m
EXPANDED Urban DEFAULT Urban (Control)
10 ensemble experiments: 5 dry years, 5 wet years
RESULTS
WET YEARS 1970, 1972, 1986, 1990, 1995
DRY Years 1964, 1982, 1988, 2001, 2003
ALL Years
JAS AVERAGE PRECIPITATION % DIFFERENCE (EXPANDED URBAN – CONTROL)
Increase in precipitation by as much as 20% in expanded
urban areas
Potential mechanism for urban impact on SWM rain
Moist winds
SUMMARY AND CHALLENGES
Hardware, software
- parallel system, better database organization, uniform computer set up
Model Validation and Improvement
• Availability and quality of observation data for model validation
• Tailoring of the model not just through model physics and configuration but also through appropriate land use, given the significance of the impact of land cover on climate
• Analysis of model performance and output in perspective of governing synoptic and local climate characteristics (e.g. climate types)
• Appropriate implementation of bias correction for sectoral applications (e.g. agriculture (IRRI))