clex 10 cloud products n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
CLEX-10 Cloud Products PowerPoint Presentation
Download Presentation
CLEX-10 Cloud Products

Loading in 2 Seconds...

play fullscreen
1 / 13

CLEX-10 Cloud Products - PowerPoint PPT Presentation


  • 82 Views
  • Uploaded on

CLEX-10 Cloud Products. 1. Day/Night Albedo. 0.65 µm albedo during daylight (0-1  black-white) 3.9 µm albedo at night: A 3.9 = 1 − L 3.9 / B 3.9 ( T 10.7 ) count = 255*[( A 3.9 + 0.3)/0.6] 2 -0.3 − +0.3  0 – 255  black − white. 2. 10.7 µm Brightness Temperature.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'CLEX-10 Cloud Products' - gordon


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
1 day night albedo
1. Day/Night Albedo
  • 0.65 µm albedo during daylight (0-1black-white)
  • 3.9 µm albedo at night: A3.9 = 1 −L3.9/B3.9(T10.7)count = 255*[(A3.9 + 0.3)/0.6]2-0.3 − +0.3  0 – 255  black − white
2 10 7 m brightness temperature
2. 10.7 µm Brightness Temperature
  • +30ºC to -20ºC, black – white
  • < -20ºC to -30ºC, blue
  • < -30ºC to -40ºC, cyan
  • < -40ºC to -50ºC, green
  • < -50ºC to -60ºC, yellow
  • < -60ºC to -70ºC, red
  • < -70ºC, magenta
3 water vapor
3. Water Vapor
  • 6.7 µm brightness temperature
  • Standard CIRA water vapor scale
4 3 9 m albedo
4. 3.9 µm Albedo
  • Night: black = cirrus, white = liquid water cloud, gray = everything else
  • Day: white = liquid water cloud, gray = everything else
5 13 3 m brightness temperature
5. 13.3 µm Brightness Temperature
  • Intended to determine cloud top height
  • Same scale as T10.7
6 t 10 7 t 13 3
6. T10.7 - T13.3
  • Kelvins: +40 (black) to -8 (white)]
  • Possibly useful as a cloud mask
7 experimental a 3 9 cloud phase
7. Experimental A3.9 Cloud Phase

IF(T107 < T0 - 30. .OR. A39 == HUGE(A39)) THEN

k = 251 ! Blue, ice cloud

ELSE

cloud_thresh = 0.09

liq_thresh = -5. ! kelvin

IF(cz(ix, iy) > 0.015) THEN ! Sun up

IF(A39 >= cloud_thresh) THEN

IF(T107 > T0 + liq_thresh) THEN

k = 249 ! Red, liquid water cloud

ELSE

k = 252 ! Yellow, mixed-phase cloud

END IF

ELSE

IF(T107 <= 253.15) THEN

k = 251 ! Blue, ice cloud

ELSE

! Else, clear. Put in T10.7, gray-scaled between +15 C and -20 C

!

k = 247*MAX(0., MIN(1., (288.15 - T107)/(288.15 - 253.15)))

END IF

END IF

7 experimental a 3 9 cloud phase1
7. Experimental A3.9 Cloud Phase

ELSE ! Sun down

IF(A39 >= cloud_thresh) THEN

IF(T107 > T0 + liq_thresh) THEN

k = 249 ! Red, liquid water cloud

ELSE

k = 252 ! Yellow, mixed-phase cloud

END IF

ELSE IF(A39 < -0.02) THEN

k = 251 ! Blue, ice cloud

ELSE

! Else, clear. Put in T10.7, gray-scaled between +15 C and -20 C

!

k = 247*MAX(0., MIN(1., (288.15 - T107)/(288.15 - 253.15)))

END IF

END IF

END IF

8 t 10 7 10 day background
8. T10.7 10-Day Background
  • Warmest pixel at same time (±30 min) in last 10 days
9 t 10 7 cloud mask
9. T10.7 Cloud Mask
  • Cloudy if Tbackground− T10.7 ≥ 3 K (white)
  • Clear otherwise (put in T10.7)
10 experimental a 3 9 cloud phase using t 10 7 cloud mask
10. Experimental A3.9 Cloud Phase Using T10.7 Cloud Mask
  • If clear, put in T10.7
  • If cloudy, use T10.7 & A3.9 to determine phase:

IF(T107 < T0 - 30. .OR. A39 == HUGE(A39)) THEN

k = 251 ! Blue, ice cloud

ELSE

cloud_thresh = 0.09

liq_thresh = -5.

IF(A39 >= cloud_thresh) THEN

IF(T107 > T0 + liq_thresh) THEN

k = 249 ! Red, liquid water cloud

ELSE

k = 252 ! Yellow, mixed-phase cloud

END IF

ELSE

k = 251 ! Blue, ice cloud

END IF

Same code day and night

11 all current products
11. All Current Products
  • Loop of the latest image of all of the products to aid comparison
  • Need to slow the loop down and omit images that you don’t want to see