bureau of meteorology goes-9 amvs generation and assimilation

Bureau of Meteorology GOES-9 AMVs

Generation and Assimilation

Bureau of Meteorology GOES-9 AMVs

Generation and Assimilation

GMS‑5 channels GMS‑5 channels

Channel WavelengthID Range Resolution

VIS 0.5 - 1.0 µm 1.25 km

IR1 10.2 - 11.4 µm 5 km

IR2 10.9 - 12.2 µm 5 km

IR3 6.7 - 7.2 µm 5 km

GOES-9 IMAGER

Imager Instrument Characteristics (GOES I-M)

Channel number:

1 (Visible) 2 (Shortwave) 3 (Moisture) 4 (IR 1) 5 (IR 2)

Wavelength range (um)

0.55 - 0.75 3.80 - 4.00 6.50 - 7.00 10.20 - 11.20 11.50 - 12.50

Instantaneous Geographic Field of View (IGFOV) at nadir

1 km 4 km 8 km 4 km 4 km

Radiometric calibration

Space and 290 K infrared internal backbody

Calibration frequency

Space: 2.2 sec (full disc), 9.2 or 36.6 sec (sector/area)Infrared: 30 minutes typical

System absolute accuracy

IR channels: less than or equal to 1 KVisible channel: 5% of maximum scene irradiance

Imaging rate Full earth disc, less than or equal to 26 minutes

Smal l sector scan：Observati on of the northern hemi spherePAC9(9. 5mi n× 1) ：Observati on of the rectangl e area around J APAN

Ful l Di sk (1W)

Ful l Di sk (2W)

Smal l sector scan(15mi n× 1)

Smal l sector scan(15mi n× 1)

Ful l Di sk

Ful l Di sk

Ful l Di sk (1W)

Ful l Di sk (2W)

Ful l Di sk

Ful l Di sk (3W)

PAC9(9. 5mi n× 1)

Smal l sector scan(15mi n× 1)

Ful l Di sk

Meteorol ogi cal Satel l i te Center, J MA 2003. 1. 22

Ful l Di sk

Ful l Di sk (3W)

Ful l Di sk

Ful l Di sk (2W)

Ful l Di sk (1W)

Ful l Di sk

Ful l Di sk

Ful l Di sk (3W)

Ful l Di sk

Ful l Di skPAC9(9. 5mi n× 1)

Smal l sector scan(15mi n× 1)

Ful l Di sk

10(19)

Ful l Di sk

Ful l Di sk

Smal l sector scan(15mi n× 1)

Smal l sector scan(15mi n× 1)

08(17)

04(13)

Smal l sector scan(15mi n× 1)

Smal l sector scan(15mi n× 1)

40 50 60

09(18)

0 10 20 30

06(15)

Ful l Di sk

UTC(J apan)

02(11)

07(16)

03(12)

05(14)

00(09)

01(10)

19(04)

23(08)

22(07)

21(06)

GOES-9 Observati on Schedul e

30 40 50 600 10 20

20(05)

18(03)

11(20)

15(00)

17(02)

13(22)

12(21)

16(01)

14(23)

Ful l Di sk

Ful l Di sk

Ful l Di sk (3W)

Ful l Di sk (1W)

PAC9(9. 5mi n× 1)

Smal l sector scan(15mi n× 1)

Smal l sector scan(15mi n× 1)

Ful l Di sk (2W)

Smal l sector scan(15mi n× 1)

Smal l sector scan(15mi n× 1)

Smal l sector scan(15mi n× 1)

TRANSITION PLAN FROM GMS-5 TO MTSAT/EO-3TRANSITION PLAN FROM GMS-5 TO MTSAT/EO-3

Eo-3/GIFTSEo-3/GIFTS

GOES-9GOES-9

ATMOSPHERIC MOTION VECTORS

Image Navigation

Target Selection

Target Tracking

Height Assignment

Quality Control and ErrorEstimation

Bureau of Meteorology

GOES-9 Ch.4 AMVs

Features tracked in Ch.4 images Height assignment High lvl using Ch.4/Ch.3, low lvl Ch.4 cld base.

Assimilation

RT in LAPS375 (June 2003 – 30 cases).

Bureau of Meteorology

GOES-9 Ch.4 AMVs

Features tracked in Ch.4 images Height assignment High lvl using Ch.4/Ch.3, low lvl Ch.4 cld base.

Assimilation

RT in LAPS375 (June 2003 – 30 cases).

Table 1    Real time schedule for GOES‑9 Atmospheric Motion Vectors at the Bureau of Meteorology Sub‑satellite image resolution, frequency and time of wind extraction and separations of the image triplets used for wind generation (ΔT) are indicated.

Wind Type Resolution Frequency-Times (UTC) Triplet (ΔT)

Real Time IR     4 km 6‑hourly – 05, 11, 17,23 36 minutes

Real Time IR (hourly) 4 km Hourly 00, 01, 02, . . , 23     1 hour

Table 1   Mean Magnitude of Vector Difference (MMVD) between GOES‑9 AMVs and radiosondes winds within 150 km in the Australian Region for 9 June to 30 June 2003

GOES‑9 No. Obs MMVD (ms-1)

Low 950 – 700 hPa       431   3.64  

Middle 699 – 400 hPa       82   4.00  

High 399 – 150 hPa 1759   4.58  

Quality Control

Oper1 (ERR)

      Correlation between images            U acceleration            V acceleration            U deviation from first guess            V deviation from first guess             Cloud height check

Quality Indicator (QI)

      Direction consistency (pair)      Speed consistency (pair)      Vector consistency (pair)      Spatial Consistency      Forecast Consistency

QI = ∑wi.QVi/∑wi

EE provides RMS Error (RMS)

      Estimated from            U acceleration            V acceleration            U deviation from first guess            V deviation from first guess             Shear            Speed…

Recursive Filter Flag (RFF : 0 – 100) Determined by final fit of vector to recursive filter analysis

S1 Skill Score - OPS.v OPS.+WINDS

5

10

15

20

25

30

35

5 10 15 20 25 30 35

S1 - OPS

S1

- O

PS

+W

IND

S

Forecast No. v Skill Score Gain

-4-3-2-1012345

1 11 21 31 41 51 61 71 81 91 101 111 121131141 151 161171 181191201211221231241251261271281291

Forecast No.

Sk

ill S

co

re G

ain

S1 Skill Score gain

0

20

40

60

80

100

120

gain -3 -2 -1 0 1 2 3 4

Gain

Nu

mb

er

S1 Score v Pressure

200

300

400

500

600

700

800

900

1000

10 15 20 25 30

S1 Score

Pre

ss

ure

(m

b)

OpsW48

Ops

OpsW24

Ops

NASA NOAA Navy and BoM PartnershipGIFTS/IOMI Enables Improved Global Weather Prediction

Inter-Agency/International CooperationInter-Agency/International Cooperation

Bureau of Meteorology AustraliaDepartment of Commerce/NOAA DoD/Space Test Program

Data to NavalCenters/

Fleet Demo

Data to NavalCenters/

Fleet Demo

AustralianGround Station& Data ProcessingCenter

AustralianGround Station& Data ProcessingCenter

Data to NOAACentersData to NOAACenters

Conus “2”

Conus “1”

Indian Ocean “3”

Global Disk Imaging: 422 Steps

Spe

ctra

l Res

olut

ion:

36c

m-1

Sounding Regional: 144 Steps

Spe

ctra

l Res

olut

ion:

0.6

cm-1

Low Noise Sounding: 36 Steps

Spe

ctra

l Res

olut

ion:

0.6

cm-1

Global Disk Sounding: 360 Steps

Spe

ctra

l Res

olut

ion:

18c

m-1

GIFTS Allows The Trade ofGIFTS Allows The Trade of Coverage & Spectral Coverage & Spectral

ResolutionResolution

< 1 Hr < 1/2 Hr(imagery < 5 min)

< 1/2 Hr< 10 Min

NAST-I Demonstration of NAST-I Demonstration of GIFTSGIFTS

Water Vapor Feature Water Vapor Feature SensitivitySensitivity

300 Mb 500 Mb 850 Mb

CART-Site CART-Site CART-Site

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