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

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

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

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

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