GOES8 Data Missing Because of Satellite Problem

The data was missing over this time period because of a 
problem with the satellite - note discussion below
Subject: URGENT! GOES-8 outage to continue
From: jhawkins@nesdis.noaa.gov (Jamie Hawkins)
Date: Thu, 9 Jan 1997 16:34:14 +0500

NOAA continues to analyze the GOES-8 problem, which now seems to be
unrelated to an electrostatic discharge.  Data now indicate that the
attitude and orbit control computer (AOCE#2) is not receiving telemetry from
one of two momentum wheels which keep the spacecraft facing the earth
propoerly.  A fix has been identified which will require using a back-up
momentum wheel configuration known as L2.  

To begin L2 operations, NOAA will bring GOES-8 out of safe hold at
approximately 5:00PM EST (22:00UTC) tomorrow, Friday January 10th.  About
two hours later, around 7:00 PM EST (00:00 UTC Saturday), imager and sounder
GVAR data should begin flowing from the satellite.  Operational products
from NOAA for the National Weather Service should resume at that time.  

However, ALL USERS SHOULD NOTE that it may take 48 hours or longer for
accurate navigation and registration to return to GOES-8 imagery.

We will keep you informed of any chnages in this scheduled fix during the
day Friday.


Jamison Hawkins
NOAA/NESDIS
GOES Product Manager
301-457-5125

• rel_azimuth(rel_azimuth)
• Satellite Zenith Angle(sat_zenith)
• line(line)
• sample(sample)
• sun_zenith(sun_zenith)
• GVAR Channel 3(gvar_ch3)
• GVAR Channel 4(gvar_ch4)
• gvar_ch5(gvar_ch5)
• gvar_ch1(gvar_ch1)
• gvar_ch2(gvar_ch2)

• sun_zenith(sun_zenith)
• Satellite Zenith Angle(sat_zenith)
• gvar_ch1(gvar_ch1)
• line(line)
• rel_azimuth(rel_azimuth)
• sample(sample)

• cloud narrowband reflectance at TOA(Reflectance)
• cloud level(level)
• clear narrowband VIS albedo standard deviation(Narrowband_VIS_Albedo_SD)
• solar zenith angle(Solar_Zenith_Angle)
• cloud center height(Cloud_Center_Height)
• lat(lat)
• IR beam cloud emissivity(Emissivity)
• relative azimuth angle(Relative_Azimuth_Angle)
• viewing zenith angle(Viewing_Zenith_Angle)
• broadband SW albedo for clear and total scene(Broadband_SW_Albedo)
• clear narrowband VIS reflectance(Clear_VIS_Reflectance)
• cloud thickness estimate(Cloud_Thickness)
• base time(base_time)
• clear IR temperature(Clear_Temperature)
• visible optical depth standard deviation(Visible_Optical_Depth_SD)
• cloud narrowband albedo(Albedo)
• cloud center temperature standard deviation(Cloud_Center_Temperature_SD)
• narrowband VIS albedo for clear and total scene(Narrowband_VIS_Albedo)
• narrowband IR flux for clear and total scene(Narrowband_IR_Flux)
• clear IR temperature standard deviation(Clear_Temperature_SD)
• IR cloud optical depth(IR_Optical_Depth)
• visible cloud optical depth(Visible_Optical_Depth)
• north latitude(latitude)
• cloud center temperature(Cloud_Center_Temperature)
• Time offset of tweaks from base_time(time_offset)
• cloud amount(Cloud_Amount)
• Dummy altitude for Zeb(alt)
• east longitude(longitude)
• broadband LW flux for clear and total scene(Broadband_LW_Flux)
• uncorrected cloud temperature(Cloud_Temperature)
• lon(lon)
• total scene average temperature(Average_Total_Temperature)
• cloud top height(Cloud_Top_Height)
• cloud top temperature(Cloud_Top_Temperature)
• scene description(view)

• total scene average temperature(Average_Total_Temperature)
• Dummy altitude for Zeb(alt)
• cloud center temperature standard deviation(Cloud_Center_Temperature_SD)
• narrowband VIS albedo for clear and total scene(Narrowband_VIS_Albedo)
• visible cloud optical depth(Visible_Optical_Depth)
• broadband LW flux for clear and total scene(Broadband_LW_Flux)
• broadband SW albedo for clear and total scene(Broadband_SW_Albedo)
• IR beam cloud emissivity(Emissivity)
• visible optical depth standard deviation(Visible_Optical_Depth_SD)
• base time(base_time)
• IR cloud optical depth(IR_Optical_Depth)
• cloud level(level)
• cloud narrowband albedo(Albedo)
• relative azimuth angle(Relative_Azimuth_Angle)
• cloud top temperature(Cloud_Top_Temperature)
• cloud amount(Cloud_Amount)
• viewing zenith angle(Viewing_Zenith_Angle)
• clear narrowband VIS albedo standard deviation(Narrowband_VIS_Albedo_SD)
• clear IR temperature(Clear_Temperature)
• clear IR temperature standard deviation(Clear_Temperature_SD)
• lat(lat)
• scene description(view)
• Time offset of tweaks from base_time(time_offset)
• cloud narrowband reflectance at TOA(Reflectance)
• solar zenith angle(Solar_Zenith_Angle)
• north latitude(latitude)
• cloud center temperature(Cloud_Center_Temperature)
• cloud top height(Cloud_Top_Height)
• lon(lon)
• clear narrowband VIS reflectance(Clear_VIS_Reflectance)
• cloud center height(Cloud_Center_Height)
• uncorrected cloud temperature(Cloud_Temperature)
• cloud thickness estimate(Cloud_Thickness)
• narrowband IR flux for clear and total scene(Narrowband_IR_Flux)
• east longitude(longitude)