Satellite band averaged data: water-leaving radiance, surface irradiance and solar normalized water-leaving radiance. These values are given as the mean flux (not the total flux) for each band. The total and in-band averages are calculated for each satellite. The in-band is calculated by limiting the relative spectral response to within 1% of the maximum value. A separate data listing (denoted by it's hour) is presented when MOBY collects more than one file per day. Six water-leaving radiances can be calculated from different combinations of MOBY four radiance collectors. The best water-leaving radiance is Lw1, determined from the upper two arms. Lw7 is also included and is calculated from the middle and bottom arms.
VIIRS-NPP RSR files were from the http://www.star.nesdis.noaa.gov/jpss/, the file downloaded was NG_RSRs.zip. Columns 1 and 2 in the VIIRS_F1_Fused_v3_RSR_M*.dat files were used to create the RSRs used to weight MOBY data. The readme file in this directory says "This data is provided by Northrop Grumman under the NPOESS contract (F04701-02-0502, NPOESS A&O)" CONTACT INFO: Mau-Song Chou: mau-song.chou@ngc.com, 27-Sep-11. The file was downloaded from the ftp site on 23-Nov-2011 by Stephanie Flora.
Starting on April 18th, 2016 the MOBY optical system began having a problem. The issue we saw was the data from the red spectrograph in the MOBY optical system was anomalously high. We have been monitoring the data stream, and we are fairly certain that the issue is that the camera shutter in the red spectrograph camera is sticking open and extending the exposure time by 0.2 s. This causes a 30% increase for Es, and 10-20% increase for the Ed measurements, but only a 0.3 % or less problem for Lu. Thus we can produce a full spectral Lw product that has virtually unchanged uncertainties. But for Lwn, which requires an associated Es, we cannot do the normal processing for wavelengths above 620 nm.
When we only had the pre-deployment calibrations we adjusted the RSG Es data using the blue red overlap region. With the post-deployment calibrations now available and a new RSG integration time calibration we will apply the postcal system response to the data from 18 April to the end of the deployment. The first half of the deployment will use the precal system response. We are no longer doing any adjustments to the Es data.
● October 2016 Reprocessing Information
In Oct 2016, a reprocessing of the MOBY data began. Three problems are being addressed: 1) the method to extrapolate Kl to the surface has been improved to include Raman scattering and chlorophyll fluorescence; 2) the arm depths used in retrievals was increased by 0.234 m; and 3) a single pixel shift in the data for the RSG collected at a bin factor of 384 for deployments MOBY203 to MOBY253. Initially only MOBY254 to current deployments were reprocessed. These deployments did not have the RSG single pixel shift problem. So for MOBY254 to current deployments only correction 1 and 2 are applied. As the older deployments are processed the data will be added to this directory. MOBY203 to MOBY253 will have had all three corrections applied.
Satellite Band | Hour | Lw&Es | Lwn2 |
---|---|---|---|
VIIRS-NPP Total-Band | 00 | 1 | 1 |
20 | 1 | 1 | |
22 | 1 | 1 | |
23 | 1 | 1 | |
VIIRS-NPP Total-Band | 00 | 7 | 7 |
20 | 7 | 7 | |
22 | 7 | 7 | |
23 | 7 | 7 | |
VIIRS-NPP Total-Band | 00 | 2 | 2 |
20 | 2 | 2 | |
22 | 2 | 2 | |
23 | 2 | 2 | |
VIIRS-NPP In-Band | 00 | 1 | 1 |
20 | 1 | 1 | |
22 | 1 | 1 | |
23 | 1 | 1 | |
VIIRS-NPP In-Band | 00 | 7 | 7 |
20 | 7 | 7 | |
22 | 7 | 7 | |
23 | 7 | 7 | |
VIIRS-NPP In-Band | 00 | 2 | 2 |
20 | 2 | 2 | |
22 | 2 | 2 | |
23 | 2 | 2 | |
VIIRS-NPP Total-Band modeled Kl | 00 | 21 | - |
20 | 21 | - | |
22 | 21 | - | |
23 | 21 | - | |
VIIRS-NPP Total-Band modeled Kl | 00 | 27 | - |
20 | 27 | - | |
22 | 27 | - | |
23 | 27 | - | |
VIIRS-NPP Total-Band modeled Kl | 00 | 22 | - |
20 | 22 | - | |
22 | 22 | - | |
23 | 22 | - | |
VIIRS-NPP In-Band modeled Kl | 00 | 21 | - |
20 | 21 | - | |
22 | 21 | - | |
23 | 21 | - | |
VIIRS-NPP In-Band modeled Kl | 00 | 27 | - |
20 | 27 | - | |
22 | 27 | - | |
23 | 27 | - | |
VIIRS-NPP In-Band modeled Kl | 00 | 22 | - |
20 | 22 | - | |
22 | 22 | - | |
23 | 22 | - |
MOBY Hour | Lw | Aux Data |
---|---|---|
00 | 1 | Listing |
00 | 2 | Listing |
00 | 7 | Listing |
20 | 1 | Listing |
20 | 2 | Listing |
20 | 7 | Listing |
22 | 1 | Listing |
22 | 2 | Listing |
22 | 7 | Listing |
23 | 1 | Listing |
23 | 2 | Listing |
23 | 7 | Listing |