huailin chen, bruce gentry, tulu bacha, belay demoz, demetrius venable wintergreen, va
DESCRIPTION
Goddard Lidar Observatory for Winds (GLOW) Wind Profiling from the Howard University Beltsville Research Facility. Huailin Chen, Bruce Gentry, Tulu Bacha, Belay Demoz, Demetrius Venable Wintergreen, VA June, 2009. - PowerPoint PPT PresentationTRANSCRIPT
G O D D A R D S P A C E F L I G H T C E N T E R
Goddard Lidar Observatory for Winds (GLOW) Wind Profiling
from the Howard University Beltsville
Research Facility
Goddard Lidar Observatory for Winds (GLOW) Wind Profiling
from the Howard University Beltsville
Research Facility Huailin Chen, Bruce Gentry, Tulu Bacha, Belay Demoz, Demetrius
Venable
Wintergreen, VAJune, 2009
G O D D A R D S P A C E F L I G H T C E N T E R
NASA Wind Lidar Science (WLS) Experiment at Howard Beltsville
Research Facility
NASA Wind Lidar Science (WLS) Experiment at Howard Beltsville
Research Facility
GOALS
• Develop understanding of direct detection (GLOW) and coherent Doppler lidar (VALIDAR) wind performance for various cloud and aerosol loading conditions (pollution, cirrus)
• Develop a seasonal data base archive for wind measurements.
• Intercomparison of coherent and direct detection Doppler lidars
• Compare Doppler lidar wind data to other sensors (Profiler, Radiosonde, ACARS).
• Hands-on student training
• Funded by NASA SED, ROSES07-WLS (Dr. Ramesh Kakar)
G O D D A R D S P A C E F L I G H T C E N T E R
Measurement summary •Vertical resolution=250 m t=3 min •Altitude range= 2 to 5 km•Elevation angle= 45 deg•Scan pattern = 4 directions: (N,S,E,W)+vertical•Dwell per LOS = 30 sec
GLOW -February 24, 2009
12 14 16 18 20 220
5
10
15
Alt
itu
de
(km
)
Wind speed (m/s)
0
20
40
60
12 14 16 18 20 220
5
10
15
Local Time (hrs)
Alt
itu
de
(km
)
Wind direction (degrees)
200
250
300
350
RS
92 S
onde
1
RS
92 S
onde
2
RS
92 S
onde
1
RS
92 S
onde
2
m/s
deg
Goddard Lidar Observatory for Winds (GLOW) mobile Doppler lidar
• Direct detection Doppler Lidar system• Measures clear air wind profiles using molecular backscatter• Serves as technology testbed for air and space based lidar technologies• Multiple field campaigns since 2000
0 20 40 600
5
10
15
W ind spe e d (m /s)
Alt
itu
de
(km
)
GLOWS onde
0 100 200 3000
5
10
15
W ind dire ction (de g)
Alt
itu
de
(km
)
GLOW file:speddir1_74mcs0902241854.asc Sonde file:GSFC _R S92SGP_20090225_0329U T.dat
GLOWS onde
915 MHz wind profiler and local radiosonde launches provide correlative measurements for the wind lidar systems
Direct Detection Doppler lidar profiling at Howard Beltsville
Research Facility
Direct Detection Doppler lidar profiling at Howard Beltsville
Research Facility
GLOW mobile Doppler lidar
G O D D A R D S P A C E F L I G H T C E N T E R
Sampling strategy:• LOS scans at multiple azimuths in repeating cycle (5-10 LOS /cycle)
• Step stare scan pattern at fixed elevation angle (Typ. 45 deg) : 4 cardinal directions (N,S,E,W) + vertical
• Signals are range gated in 45 m bins, integrated and stored every 10 s. Three dwells (30s total) per LOS. Total time to complete scan: ~3 min
Post processing: • data averaged in range (default 250 m)• data can be accumulated in time by LOS (multiples of base 3 min)• corrections for atmos. T and P (RBS)
1
2
3
4
5
1
2
3
4
5
G O D D A R D S P A C E F L I G H T C E N T E R
Wavelength 354.7 nmTelescope/Scanner Area 0.116 m2
Laser Linewidth (FWHH) 80 MHzLaser Energy/Pulse 25 mJ @ 50ppsEtalon FSR 12 GHzEtalon FWHH 1.7 GHzEdge Channel Separation 5.1 GHzLocking Channel Separation 1.7 GHzInterference filter BW (FWHH) 150 pmPMT Quantum Efficiency 22%
GLOW Lidar System Parameters
G O D D A R D S P A C E F L I G H T C E N T E R
GLOW Signal Dynamic Range
G O D D A R D S P A C E F L I G H T C E N T E R
1 1 : 0 0 1 2 : 0 0 1 3 : 0 0 1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 0 0 0 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itud
e M
SL
(km
)
W in d s p e e d (m / s )
1 1 : 0 0 1 2 : 0 0 1 3 : 0 0 1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 0 0 0 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itud
e M
SL
(km
)
W in d d ire c t io n (d e g re e s )
2 4 0
2 6 0
2 8 0
3 0 0
3 2 0
3 4 0
3 6 0
0
1 0
2 0
3 0
4 0
5 0
6 0
February 24, 2009 z=250 m ; t=3 min
Clouds
RS
92 s
onde
RS
92 s
onde
2 km
~45 min
Signals exceed max count rate below 2 km. PMTs gated off
G O D D A R D S P A C E F L I G H T C E N T E R
0 1 0 2 0 3 0 4 0 5 0 6 00
5
1 0
1 5
W in d s p e e d (m / s )
Alt
itu
de
(k
m)
G L O W file : G L O W _ HB RF _ 3 x 1 _ 2 5 0 m _ 2 0 0 9 0 2 2 5 T0 1 2 6 0 9 UT. t x t S o n d e file : G S F C_ RS 9 2 S G P _ 2 0 0 9 0 2 2 5 _ 0 0 5 9 UT. d a t
G L O W
S o n d e
2 2 0 2 4 0 2 6 0 2 8 0 3 0 0 3 2 0 3 4 0 3 6 00
5
1 0
1 5
W in d d ire c t io n (d e g )
Alt
itu
de
(k
m)
G L O W
S o n d e
February 24, 2009
GLOW profile: 0126 UT Sonde launched: 0059 UTGLOW 3 min average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_20_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
GLOW
Sonde
01:00 UT
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_20_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
GLOW
Sonde
01:00 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_21_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
1:03 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_21_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
1:03 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_22_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:06 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_22_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:06 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_23_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:09 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_23_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:09 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_24_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:12 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_24_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:12 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_25_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:16 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_25_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:16 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_26_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
SondeGLOW
Sonde
01:19 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_26_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
SondeGLOW
Sonde
01:19 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_27_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
SondeGLOW
Sonde
01:22 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_27_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
SondeGLOW
Sonde
01:22 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_28_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:26 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_28_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:26 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_29_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:29 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_29_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:29 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_30_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:32 UT
270 280 290 300 310 320 330 3400
1
2
3
4
5
6
7
8
9
10
Wind direction (deg)
Alti
tude
(km
)
GLOW file:speddir1_30_3x1_250m_mcs0902241854.asc Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
0 5 10 15 20 250
1
2
3
4
5
6
7
8
9
10
Wind speed (m/s)
Alti
tude
(km
)
GLOW
Sonde
GLOW
Sonde
01:32 UT
Exploring Differences in Spatial and Temporal Sampling- GLOW
vs Sonde
= sonde altitude at time of lidar measurement. Assumes rise rate of 5 m/s.
G O D D A R D S P A C E F L I G H T C E N T E R
February 24, 2009
0 1 0 2 0 3 0 4 0 5 0 6 00
5
1 0
1 5
W in d s p e e d (m / s )
Alt
itu
de
(k
m)
G L O W file : G L O W _ HB RF _ 1 1 x 1 _ 2 5 0 m _ 2 0 0 9 0 2 2 5 T0 1 2 6 0 9 UT. t x t S o n d e file : G S F C_ RS 9 2 S G P _ 2 0 0 9 0 2 2 5 _ 0 0 5 9 UT. d a t
G L O W
S o n d e
2 4 0 2 6 0 2 8 0 3 0 0 3 2 0 3 4 0 3 6 00
5
1 0
1 5
W in d d ire c t io n (d e g )
Alt
itu
de
(k
m)
G L O W
S o n d e
GLOW profile: 0150 UT Sonde launched: 0128 UTGLOW 30 min running average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
-10 -8 -6 -4 -2 0 2 4 6 8 100
5
10
15
Wind speed difference (GLOW-sonde) (m/s)
Alti
tude
(km
)
GLOW file:GLOW_HBRF_11x1_250m_20090225T012609UT.txt Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
-20 -15 -10 -5 0 5 10 15 200
5
10
15
Wind direction difference (GLOW-sonde) (deg)
Alti
tude
(km
)
February 24, 2009
G O D D A R D S P A C E F L I G H T C E N T E R
0 10 20 30 40 50 60 700
5
10
15
Wind speed (m/s)
Alti
tude
(km
)
GLOW file:GLOW_HBRF_11x1_250m_20090225T035649UT.txt Sonde file:GSFC_RS92SGP_20090225_0329UT.dat
GLOW
Sonde
0 50 100 150 200 250 300 3500
5
10
15
Wind direction (deg)
Alti
tude
(km
)
GLOW
Sonde
February 24, 2009
GLOW profile: 0417 UT Sonde launched: 0329 UTGLOW 33 min running average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
-10 -8 -6 -4 -2 0 2 4 6 8 100
5
10
15
Wind speed difference (GLOW-sonde) (m/s)
Alti
tude
(km
)
GLOW file:GLOW_HBRF_11x1_250m_20090225T035649UT.txt Sonde file:GSFC_RS92SGP_20090225_0329UT.dat
-20 -15 -10 -5 0 5 10 15 200
5
10
15
Wind direction difference (GLOW-sonde) (deg)
Alti
tude
(km
)
GLOW-SondeFebruary 24, 2009
GLOW profile: 0357 UT Sonde launched: 0329 UTGLOW 33 min running average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
1 1 : 3 0 1 2 : 0 0 1 2 : 3 0 1 3 : 0 0 1 3 : 3 0 1 4 : 0 0 1 4 : 3 0 1 5 : 0 0 1 5 : 3 0 1 6 : 0 0 1 6 : 3 0 1 7 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d s p e e d (m / s )
1 1 : 3 0 1 2 : 0 0 1 2 : 3 0 1 3 : 0 0 1 3 : 3 0 1 4 : 0 0 1 4 : 3 0 1 5 : 0 0 1 5 : 3 0 1 6 : 0 0 1 6 : 3 0 1 7 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d d ire c t io n (d e g re e s )
2 2 0
2 4 0
2 6 0
2 8 0
3 0 0
3 2 0
3 4 0
0
1 0
2 0
3 0
4 0
5 0
6 0
March 18, 2009 z=250 m ; t=3 min
G O D D A R D S P A C E F L I G H T C E N T E R
0 9 : 0 0 1 0 : 0 0 1 1 : 0 0 1 2 : 0 0 1 3 : 0 0 1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d s p e e d (m / s )
0 9 : 0 0 1 0 : 0 0 1 1 : 0 0 1 2 : 0 0 1 3 : 0 0 1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d d ire c t io n (d e g re e s )
2 0 0
2 5 0
3 0 0
3 5 0
0
2 0
4 0
6 0
8 0
April 9, 2009 z=250 m ; t=3 min
G O D D A R D S P A C E F L I G H T C E N T E R
14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:000
0.5
1
1.5
2
Local Time (ET)
Alti
tude
MS
L (k
m)
Wind speed (m/s)
14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:000
0.5
1
1.5
2
Local Time (ET)
Alti
tude
MS
L (k
m)
Wind direction (degrees)
0
5
10
15
20
25
30
200
220
240
260
280
300
320
March 11, 2009 z=250 m ; t=3 min ; 9 min running average
G O D D A R D S P A C E F L I G H T C E N T E R
14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:000
0.5
1
1.5
2
Local Time (ET)
Alti
tude
MS
L (k
m)
Wind speed (m/s)
14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:000
0.5
1
1.5
2
Local Time (ET)
Alti
tude
MS
L (k
m)
Wind direction (degrees)
200
220
240
260
280
300
320
0
5
10
15
20
25
30
March 11, 2009 z=100 m ; t=3 min; 3 min average
G O D D A R D S P A C E F L I G H T C E N T E R
Objectives Demonstrate atmospheric wind measurement
capabilities Prove new concepts and test components Validate space simulation instrument model
Edge Technique Lidar System (1995)
Edge Technique Lab Testbed
TransmitterWavelength (nm) : 1064 Repetition rate (Hz) : 10 Energy per pulse (J) : 0.12 Laser bandwidth (MHz) : 40
ReceiverTelescope diameter (m) : 0.406 Interference filter bandwidth (nm) : 5 Quantum efficiency : 0.40(analog)
0.04(PC)Fabry-Perot interferometerSpectral width FWHM (MHz) : 100Free Spectral Range (GHz) : 3
0 60 120 180 240 300 360
Direction (Degrees)
200
400
600
800
1000
1200
1400
Edge LidarRawinsonde
22 m vertical resolution
0 1 2 3 4 5 6 7 8 9 10
Wind Speed (m/s)
200
400
600
800
1000
1200
1400
Oct 12, 1995. 12:01 AM
10 sec (100 shot) averaging/LOS; 22 m vertical resolution
1. Korb, C. L, B. Gentry, and S. X. Li, (1997) “Edge Technique Doppler Lidar Wind Measurements with High Vertical Resolution,” Applied Optics, 36, pp. 5976-5983
PBL Lidar Winds1
G O D D A R D S P A C E F L I G H T C E N T E R
Future WorkFuture Work
• Continue wind profile data collection. – 2 to 3 days a week – Coordinate with NWAVES
•Examine representativeness of data sampling and averaging schemes
•Continue inter-comparisons with other wind sensors (VALIDAR, ACARS, sondes, profiler
• Examine effects of clouds and aerosols on the molecular wind measurement using Raman lidar backscatter products as a reference
• Resurrect the double edge aerosol receiver for PBL studies
G O D D A R D S P A C E F L I G H T C E N T E R
BackupsBackups
G O D D A R D S P A C E F L I G H T C E N T E R
Direct Detection Doppler lidar profiling at Howard Beltsville
Research Facility
Direct Detection Doppler lidar profiling at Howard Beltsville
Research Facility
Measurement summary •Vertical resolution=250 m t=3 min •Altitude range= 2 to 5 km•Elevation angle= 45 deg•Scan pattern = 4 directions: (N,S,E,W)+vertical•Dwell per LOS = 30 sec
Goddard Lidar Observatory for Winds (GLOW) mobile Doppler lidar
• Direct detection Doppler Lidar system• Measures clear air wind profiles using molecular backscatter• Serves as testbed for air and space based lidar technologies• Multiple field campaigns since 2000
Line of sight wind profiles are sequentially measured at 4 azimuth angles (N,S,E,W)+vertical. The multiple direction LOS profiles are combined to produce vertical profiles of horizontal wind speed and direction (right)
G O D D A R D S P A C E F L I G H T C E N T E R
0 1 0 2 0 3 0 4 0 5 0 6 00
5
1 0
1 5
W in d s p e e d (m / s )
Alt
itu
de
(km
)
G L O W file : G L O W _ HB RF _ 1 1 x 1 _ 2 5 0 m _ 2 0 0 9 0 2 2 5 T0 4 1 6 5 5 UT. t x t S o n d e file : G S F C_ RS 9 2 S G P _ 2 0 0 9 0 2 2 5 _ 0 3 2 9 UT. d a t
G L O W
S o n d e
2 4 0 2 6 0 2 8 0 3 0 0 3 2 0 3 4 0 3 6 00
5
1 0
1 5
W in d d ire c t io n (d e g )
Alt
itu
de
(km
)
G L O W
S o n d e
February 24, 2009
GLOW profile: 0417 UT Sonde launched: 0329 UTGLOW 33 min running average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
-10 -8 -6 -4 -2 0 2 4 6 8 100
5
10
15
Wind speed difference (GLOW-sonde) (m/s)
Alti
tude
(km
)GLOW file:GLOW_HBRF_11x1_250m_20090225T041655UT.txt Sonde file:GSFC_RS92SGP_20090225_0329UT.dat
-20 -15 -10 -5 0 5 10 15 200
5
10
15
Wind direction difference (GLOW-sonde) (deg)
Alti
tude
(km
)
GLOW-SondeFebruary 24, 2009
GLOW profile: 0417 UT Sonde launched: 0329 UTGLOW 33 min running average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
February 24, 2009
0 1 0 2 0 3 0 4 0 5 0 6 00
5
1 0
1 5
W in d s p e e d (m / s )
Alt
itu
de
(k
m)
G L O W file : G L O W _ HB RF _ 1 1 x 1 _ 2 5 0 m _ 2 0 0 9 0 2 2 5 T0 3 5 0 0 7 UT. t x t S o n d e file : G S F C_ RS 9 2 S G P _ 2 0 0 9 0 2 2 5 _ 0 3 2 9 UT. d a t
G L O W
S o n d e
2 4 0 2 6 0 2 8 0 3 0 0 3 2 0 3 4 0 3 6 00
5
1 0
1 5
W in d d ire c t io n (d e g )
Alt
itu
de
(k
m)
G L O W
S o n d e
GLOW profile: 0126 UT Sonde launched: 0059 UTGLOW 33 min running average; Sonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
March 11, 2009 33 min
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 00
1
2
3
4
5
6
7
L o c a l Tim e (E T)
Alt
itu
de
MS
L (
km
)
W in d s p e e d (m / s )
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 00
1
2
3
4
5
6
7
L o c a l Tim e (E T)
Alt
itu
de
MS
L (
km
)
W in d d ire c t io n (d e g re e s )
2 2 0
2 4 0
2 6 0
2 8 0
3 0 0
3 2 0
1 0
2 0
3 0
4 0
5 0
6 0
G O D D A R D S P A C E F L I G H T C E N T E R
March 11, 2009 9 min
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 00
1
2
3
4
5
6
7
L o c a l Tim e (E T)
Alt
itu
de
MS
L (
km
)
W in d s p e e d (m / s )
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 00
1
2
3
4
5
6
7
L o c a l Tim e (E T)
Alt
itu
de
MS
L (
km
)
W in d d ire c t io n (d e g re e s )
1 0
2 0
3 0
4 0
5 0
6 0
2 2 0
2 4 0
2 6 0
2 8 0
3 0 0
3 2 0
G O D D A R D S P A C E F L I G H T C E N T E R
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 00
1
2
3
4
5
6
7
L o c a l Tim e (E T)
Alt
itu
de
MS
L (
km
)
W in d s p e e d (m / s )
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 00
1
2
3
4
5
6
7
L o c a l Tim e (E T)
Alt
itu
de
MS
L (
km
)
W in d d ire c t io n (d e g re e s )
1 0
2 0
3 0
4 0
5 0
6 0
2 2 0
2 4 0
2 6 0
2 8 0
3 0 0
3 2 0
March 11, 2009 3 min 100 m
G O D D A R D S P A C E F L I G H T C E N T E R
cos*
1*
)(
)(v
cos*
1*
)(
)(v
vv v
bygiven is vspeed windthe
,,,;2
1
ratios theand y sensitivit aGiven
degrees. ofelevation at EW,S,N, azimuths 4 from
obtained are from Edg2 and Edg1 signals Measured
y
x
2y
2x
SensRR
RR
SensRR
RR
where
WESNiEdg
EdgR
Sens
SN
SN
EW
EW
i
ii 1
2
3
4
5
G O D D A R D S P A C E F L I G H T C E N T E R
Combined Molecular Sensitivity vs. T and vT= 150K to 350K , v = 0 to 100 m/s
G O D D A R D S P A C E F L I G H T C E N T E R
March 31, 2009
0 1 0 2 0 3 0 4 0 5 0 6 00
5
1 0
1 5
W in d s p e e d (m / s )
Alt
itu
de
(k
m)
G L O W file : G L O W _ HB RF _ 3 x 1 _ 2 5 0 m _ 2 0 0 9 0 3 3 1 T0 1 5 0 1 1 UT. t x t S o n d e file : HUB V _ RS 9 2 S G P _ 2 0 0 9 0 3 3 1 _ 0 1 2 8 UT. d a t
G L O W
S o n d e
2 2 0 2 4 0 2 6 0 2 8 0 3 0 0 3 2 0 3 4 0 3 6 00
5
1 0
1 5
W in d d ire c t io n (d e g )
Alt
itu
de
(k
m)
G L O W
S o n d e
GLOW profile: 0150 UT Sonde launched: 0128 UTSonde averaged to z=250 m
G O D D A R D S P A C E F L I G H T C E N T E R
1 8 : 3 0 1 9 : 0 0 1 9 : 3 0 2 0 : 0 0 2 0 : 3 0 2 1 : 0 0 2 1 : 3 0 2 2 : 0 0 2 2 : 3 0 2 3 : 0 0 2 3 : 3 0 0 0 : 0 0 0 0 : 3 0 0 1 : 0 0 0 1 : 3 0 0 2 : 0 0 0 2 : 3 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d s p e e d (m / s )
1 8 : 3 0 1 9 : 0 0 1 9 : 3 0 2 0 : 0 0 2 0 : 3 0 2 1 : 0 0 2 1 : 3 0 2 2 : 0 0 2 2 : 3 0 2 3 : 0 0 2 3 : 3 0 0 0 : 0 0 0 0 : 3 0 0 1 : 0 0 0 1 : 3 0 0 2 : 0 0 0 2 : 3 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d d ire c t io n (d e g re e s )
3 0 0
3 1 0
3 2 0
3 3 0
3 4 0
3 5 0
3 6 0
0
2 0
4 0
6 0
8 0
March 23, 2009 z=250 m ; t=3 min
G O D D A R D S P A C E F L I G H T C E N T E R
0 10 20 30 40 50 600
5
10
15
Wind speed (m/s)
Alti
tude
(km
)
GLOW file:GLOW_HBRF_11x1_250m_20090225T011927UT.txt Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
GLOW
Sonde
220 240 260 280 300 320 340 3600
5
10
15
Wind direction (deg)
Alti
tude
(km
)
GLOW
Sonde
February 24, 2009
G O D D A R D S P A C E F L I G H T C E N T E R
-10 -8 -6 -4 -2 0 2 4 6 8 100
5
10
15
Wind speed difference (GLOW-sonde) (m/s)
Alti
tude
(km
)
GLOW file:GLOW_HBRF_11x1_250m_20090225T011927UT.txt Sonde file:GSFC_RS92SGP_20090225_0059UT.dat
-20 -15 -10 -5 0 5 10 15 200
5
10
15
Wind direction difference (GLOW-sonde) (deg)
Alti
tude
(km
)
February 24, 2009
G O D D A R D S P A C E F L I G H T C E N T E R
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 0 0 0 : 0 0 0 1 : 0 0 0 2 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d s p e e d (m / s )
0
10
20
30
40
50
60
70
1 4 : 0 0 1 5 : 0 0 1 6 : 0 0 1 7 : 0 0 1 8 : 0 0 1 9 : 0 0 2 0 : 0 0 2 1 : 0 0 2 2 : 0 0 2 3 : 0 0 0 0 : 0 0 0 1 : 0 0 0 2 : 0 00
5
1 0
1 5
L o c a l Tim e (E T)
Alt
itu
de M
SL
(k
m)
W in d d ire c t io n (d e g re e s )
220
240
260
280
300
320
340
360
March 30, 2009 z=250 m ; t=3 min
G O D D A R D S P A C E F L I G H T C E N T E R
0 1 0 2 0 3 0 4 0 5 0 6 00
5
1 0
1 5
W in d s p e e d (m / s )
Alt
itu
de
(k
m)
G L O W file : G L O W _ HB RF _ 3 x 1 _ 2 5 0 m _ 2 0 0 9 0 3 3 1 T0 1 4 0 1 0 UT. t x t S o n d e file : HUB V _ RS 9 2 S G P _ 2 0 0 9 0 3 3 1 _ 0 1 2 8 UT. d a t
G L O W
S o n d e
2 2 0 2 4 0 2 6 0 2 8 0 3 0 0 3 2 0 3 4 0 3 6 00
5
1 0
1 5
W in d d ire c t io n (d e g )
Alt
itu
de
(k
m)
G L O W
S o n d e
March 31, 2009
GLOW profile: 0140 UT Sonde launched: 0128 UTGLOW 30 min running average; Sonde averaged to z=250 m