Transcript Document

Warm Season Precipitation Analyses from
the NAME Event Raingauge Network
(NERN) '02-'03
NERN Project Team: NCAR, U. Arizona, U. Sonora, IMADES, ITSON
April, 2004
NAME Homepages:
http://www.imades.cideson.mx/NAME/
http://www.joss.ucar.edu/name
http://www.joss.ucar.edu/name/NHWG/
NERN : Shuttleworth, Watts, Jimenez
Gochis, Garatuza
• 100 Event logging, tipping
bucket raingages
• 6 major W-E transects
traversing SMO
• Major improvement in
topographic and temporal
sampling of precipitation
• Installed 2002-2003, in
operation through spring
of 2006
• Not available in real-time
Contacts: [email protected], [email protected],
[email protected]
T6
T5
T4
T3
T2
T1
N A M E (Stage 1)
M. Tres Rios
Nacori Chico
Bacadehuachi
Sahuaripa
El Novillo
Mazatán
El Mezquite
Choix
El Fuerte
RMO Sta Rosa
Moris
Ocampo
Cd. Madera
El Largo
Temosachic
Matachic
Huasabas
Moctezuma
Mazocahui
Ures
S. Nicolás
Maycoba
Yepachic
El Perico
Tomochi
P. A. Glz
Ej. Arroyo Ancho
S. Rafael
Pitorreal
Creel
Hgo del Parral
El Ojito
RMO S. José
El Vergel
Gpe Y Calvo
Dolores
El Frijolar
Tecusiapa
Soyatita
Tameapa
Santa Ana
Badiraguato
Pericos
Ros. Tesopaco
Tacupeto
Yecora
Tonichi
Tecoripa
La Colorada
Hermosillo
7/1/02 8/1/02 9/1/02 10/1/02 11/1/0212/1/02 1/1/03 2/1/03 3/1/03 4/1/03 5/1/03 6/1/03 7/1/03 8/1/03 9/1/03 10/1/03 11/1/03
Graph showing the data availability for the raingauges. A discontinuity in the line, it means that there is no data .
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Transect 2 2003 Jul-Aug Total Precipitation
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Total Precipitation (mm)
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Total Precipitation (mm)
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Total Precipitation (mm)
Terrain Elevation (m)
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Total Precipitation (mm)
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Total Precipitation (mm)
Transect 5 2003 Jul-Aug Total Precipitation
Terrain Elevation (m)
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Total Precipitation (mm)
-1
1
-1 0.9
1 6
-1 0.7 6
1 9
-1 0.6 9
1 3
-1 0.4 3
1 6
-1 0.2 6
1 9
-1 0.1 6
0 3
-1 9.9 0
0 6
-1 9.7 5
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-1 9.6 8
0 2
-1 9.4 8
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-1 9.2 1
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-1 9.1 5
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-1 9.1 6
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-1 8.9 0
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-1 8.8 3
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-1 8.6 6
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-1 8.4 1
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-1 8.1 6
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Terrain Elevation (m)
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-1 701
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-1 608
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-1 531
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-1 20
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-1 343
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-1 159
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-1 994
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Terrain Elevation (m)
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Terrain Elevation (m)
Terrain Elevation (m)
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-1 411
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-1 248
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-1 077
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-1 970
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-1 820
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-1 655
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-1 9.436
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-1 9.368
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-1 9.105
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07 0
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Transect 6 2003 Jul-Aug Total Precipitation
Elev.
Transect 6 2003
50
0
Longitude
Elev.
Transect 5 2003
0
Longitude
Transect 4 2003 Jul-Aug Total Precipitation
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Elev.
Transect 4 2003
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Transect 3 2003 Jul-Aug Total Precipitation
Elev.
Transect 3 2003
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0
Longitude
Elev.
Transect 2 2003
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Longitude
Transect 1 2003 Jul-Aug Total Precipitation
Elev.
Transect 1 2003
Precipitation Analyses: Diurnal Cycle of
Precipitation Frequency
2002-2003 Jul-Aug Diurnal Cycle of
Hourly Precipitation Frequency (NERN)
Precipitation Frequency
0.40
0.35
0-500
0.30
500-1000
0.25
1000-1500
1500-2000
0.20
2000-2500
0.15
2500-3000
0.10
Network Mean
0.05
0.00
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4
7
10
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Time of Day (LST)
19
22
Precipitation Analyses: Topographic Dependence
of the Diurnal Cycle of Wet Day Rain Rate
Precipitation Intensity (mm/hr)
2002-2003 Jul-Aug Diurnal Cycle of
Hourly Precipitation Intensity (NERN)
10.0
9.0
8.0
0-500
500-1000
7.0
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6.0
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1500-2000
2000-2500
4.0
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Network Mean
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0.0
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Time of Day (LST)
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Diurnal Cycle Averaged Across Transects
0.30
Precipitation Frequency
0.25
0.20
T6 (694 m)
T5 (1618 m)
0.15
T4 (1332 m)
T3 (1503 m)
T2 (1351 m)
0.10
T1 (1622 m)
Netw ork Mean
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0.00
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Time of Day (LST)
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Gulf Surges During 2003
Issues related to NAM Precipitation Analyses
• What are the most appropriate metrics for comparing/ validating
precipitation estimates from models and remotely sensed platforms with
NERN and other station-based datasets?
–
–
–
–
Merged datasets
Area integrations (NAME verif. zones, gridded anal., watershed avgs., etc.)
Climatology vs. case studies
Linking precipitation character w/ forcing mechanisms
• Exactly how does precipitation propagate off of the SMO?
– Modeling and NERN evidence that precipitation may move away from SMO to
west AND east
• Extending analyses to encompass larger N. American region
Covariance between NAMS and US?:
Cont. US
• SW – Cont. US
correlations are v.
weak and explain v.
little of overall σ2
• However,
statistically
significant evidence
for weak anit-correl
at lag 0 with
transition to pos.
correls at (US) lag 4
SW
See You This Summer!
Nos vemos este verano!
Precipitation Analyses: 2002 Statistics
Elevation Bands
Network
Elevation Band Interval (m)
Total Number of Gages
B1
0-500
50
Percent of Network (%)
B2
B3
B4
B5
B6
500-1000 1000-1500 1500-2000 2000-2500 2500-3000
16
10
1
10
11
2
32
20
2
20
22
4
# Gages Rporting (2002)
47
14
10
1
9
11
2
Average % of Wet-Days
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38
51
71
61
59
54
Std. Dev. % of Wet-Days
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8
11
n/a
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10
2
Avg. Intensity (mm/hr)
2.7
3.2
2.3
3.2
2.4
2.3
2.5
Avg. Max. Intensity
28.2
35.4
29.3
27.9
22.2
25.3
15.2
Std. Dev. Max. Intensity
13.7
15.2
10.3
n/a
10.2
15.5
5.4
Abs. Max. Intensity
67.3
67.3
41.7
27.9
40.6
54.1
19.1
Precipitation Analyses: Topographic Dependence
of the Diurnal Cycle of Wet Day Rain Rate
August 2002 – PHASE I Gauges Only
5b
Precipitation Rate (mm/hr)
2
1.8
Network Mean (n=47)
0-500 (n=14)
500-1000 (n=10)
1000-1500 (n=1)
1500-2000 (n=9)
2000-2500 (n=11)
2500-3000 (n=2)
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
2
4
6
8
10
12
14
16
18
20
Time of Day (LST- Local Solar Time)
22
24
Precipitation Analyses: Elevation Dependence
of the Diurnal Power Spectrum
Periodogram
Periodogram
Periodogram
0.10
0.06
0.04
0.02
0.00
0.00
0.02
0.04
0.06
Frequency
0.08
0.20
0.08
0.06
0.04
0.02
0.10
0.00
0.00
0.02
Yecora – 1543m
0.04
0.06
Frequency
Squared Magnitude
0.08
Squared Magnitude
Mtn. Stations:
Squared Magnitude
0.10
0.08
0.15
0.10
0.05
0.10
0.00
0.00
0.02
0.04
0.06
Frequency
Ej. El Frijol – 1581m
0.08
0.10
La Hermita – 2716m
Periodogram
Periodogram
Periodogram
0.10
0.06
0.04
0.02
0.00
0.00
0.02
0.04
0.06
Frequency
Tecoripa – 402m
0.08
0.10
0.08
Squared Magnitude
0.08
Squared Magnitude
Plains Stations:
Squared Magnitude
0.10
0.06
0.04
0.02
0.10
0.00
0.00
0.02
0.04
0.06
Frequency
Pericos – 71m
0.08
0.06
0.04
0.02
0.08 0.00 0.10
0.00
0.02
0.04
0.06
Frequency
Mazatlan – 2m
0.08
0.10
Periodogram
0.08
0.06
0.04
Periodogram
0.02
0.02
0.04
0.06
Frequency
0.08
0.10
0.10
Squared Magnitude
0.00
0.00
0.08
0.06
0.04
0.02
0.00
0.00
Periodogram
0.02
0.04
0.06
Frequency
0.08
0.10
0.10
0.08
0.06
Periodogram
0.04
0.02
0.04
0.06
Frequency
0.08
Squared Magnitude
0.10
0.10
0.08
0.06
0.04
0.02
0.00
0.00
Periodogram
0.02
0.04
0.06
Frequency
0.08
0.10
0.10
0.08
0.06
0.04
0.02
0.00
0.00
0.02
0.04
0.06
Frequency
0.08
0.10
Periodogram
0.20
Squared Magnitude
0.02
Periodogram
0.10
Squared Magnitude
0.00
0.00
Squared Magnitude
Squared Magnitude
Squared Magnitude
0.10
0.08
0.06
0.10
0.05
0.00
0.00
0.04
0.02
0.00
0.00
0.15
0.02
0.04
0.06
Frequency
0.08
0.10
0.02
0.04
0.06
Frequency
0.08
0.10
Precipitation Analyses: Diurnal Cycle of
Precipitation Frequency
2002-2003 Jul-Aug Diurnal Cycle of
Hourly Precipitation Frequency (NERN)
Precipitation Frequency
0.40
0.35
0.30
Network Mean
0.25
Westside Mean(70)
0.20
Eastside Mean(11)
0.15
0.10
0.05
0.00
1
4
7
10
13
Time of Day (LST)
16
19
22
Precipitation Analyses: Diurnal Cycle of
Intensity
Precipitation Intensity (mm/hr)
2002-2003 Jul-Aug Diurnal Cycle of
Hourly Precipitation Intensity (NERN)
10.0
9.0
8.0
7.0
Network Mean
6.0
5.0
Westside Mean(70)
Eastside Mean(11)
4.0
3.0
2.0
1.0
0.0
1
4
7
10
13
Time of Day (LST)
16
19
22
N A M E (Stage 2)
El Coyote
El Frijola Chih
El_Rodeo
Tamazula
Sonalona
Culiacán
La Palma
Huevachic
RMO_Alamos
Basihuare
Guachochi
Balleza
El Palmito Dgo
Emiliano Martínez
Santa Elena
Cie. Ntra. Señora
Las Ranas
Sgo Papasquiaro
Guatimape
Canatlán
Durango
Llano Grande
RMO_Las Rusias
La Ermita
El Palmito Sin
RMO Loberas
Corte Alto
Mesa del Carrizal
Copala
Concordia
Mazatlán
5/1/03
6/1/03
7/1/03
8/1/03
9/1/03
10/1/03
Graph showing the data availability for the raingauges.
11/1/03