Search found 23 matches

by wfmiller
Fri May 31, 2024 11:47 am America/New_York
Forum: Home
Question: Questions about CERES GEO dataset.
Replies: 3

Re: Questions about CERES GEO dataset.

The five GEO satellites used to process a given month have to have the same version to make an internal product used for SYN1deg. After processing Himawari 8 data for about three years, a problem was discovered that required reprocessing back to July 2015 when Himawari 8 started to be processed. The...
by wfmiller
Thu May 09, 2024 10:10 am America/New_York
Forum: Home
Question: Questions about CERES GEO dataset.
Replies: 3

Re: Questions about CERES GEO dataset.

There is a limitation in our processing code that requires that all five geostationary satellite have the same version. We needed to reprocess data for the Himawari 8 starting in July 2015 that necessitated the change. The overlap period was what was processed before the need was discovered. We are ...
by wfmiller
Mon Apr 22, 2024 3:47 pm America/New_York
Forum: Home
Question: CERES 'definition of SSF instantaneous footprint information for Level 2 products
Replies: 1

Re: CERES 'definition of SSF instantaneous footprint information for Level 2 products

The CERES instruments scans the Earth with a view zenith angle varying from 0 to 65 degrees on each side of the satellite when in cross track mode. There are about 86 footprints on the SSF per scan with separation growing with view zenith angle. The footprints are about 8 km apart at nadir and growi...
by wfmiller
Fri Mar 29, 2024 4:41 pm America/New_York
Forum: Home
Question: Problems related to cloud properties of CERES clouds in spherical radiation budget systems
Replies: 2

Re: Problems related to cloud properties of CERES clouds in spherical radiation budget systems

The cloud effective height and pressure are values that is obtained strictly from the infrared radiance obtained by the imager. A certain amount of water droplets are needed before the infrared signal becomes strong enough to be detected by a passive instrument such as MODIS or VIIRS. This can be lo...
by wfmiller
Tue Dec 26, 2023 3:35 pm America/New_York
Forum: Home
Question: How to obtain ice cloud fraction?
Replies: 3

Re: How to obtain ice cloud fraction?

The second statement is correct, "A phase of 1 indicates all cloud pixels are liquid while a phase of 2 means ice. A phase of 1.5 is a cloud region where half of the MODIS pixels are ice and the other half are liquid." The cloud phase is calculated as below in CERES processing: Cloud Parti...
by wfmiller
Mon Jul 24, 2023 2:03 pm America/New_York
Forum: Home
Question: CERES data
Replies: 7

Re: CERES data

The Terra and Aqua SRFs remained the same starting with May 2020.

I have attached the Aqua SW SRFs for 2018, 2019, and 2020.
SRF_Aqua-FM3_SW_2019.pdf
Aqua Shortwave Channel SRF for 2019 (12 monthly values)
(215.68 KiB) Downloaded 394 times
SRF_Aqua-FM3_SW_2019.pdf
Aqua Shortwave Channel SRF for 2019 (12 monthly values)
(215.68 KiB) Downloaded 394 times
SRF_Aqua-FM3_SW_2019.pdf
Aqua Shortwave Channel SRF for 2019 (12 monthly values)
(215.68 KiB) Downloaded 394 times
by wfmiller
Mon Jul 24, 2023 2:01 pm America/New_York
Forum: Home
Question: CERES data
Replies: 7

Re: CERES data

The Terra and Aqua SRFs remained the same starting with May 2020.

I have attached the Aqua TOT SRFs for 2018, 2019, and 2020.
SRF_Aqua-FM3_TOT_2018.pdf
Aqua Total Channel SRF for 2018 (12 monthly values)
(347.75 KiB) Downloaded 140 times
SRF_Aqua-FM3_TOT_2018.pdf
Aqua Total Channel SRF for 2018 (12 monthly values)
(347.75 KiB) Downloaded 140 times
SRF_Aqua-FM3_TOT_2018.pdf
Aqua Total Channel SRF for 2018 (12 monthly values)
(347.75 KiB) Downloaded 140 times
by wfmiller
Mon Jul 24, 2023 1:59 pm America/New_York
Forum: Home
Question: CERES data
Replies: 7

Re: CERES data

The Terra and Aqua SRFs remained the same starting with May 2020.

I have attached the Terra SW SRFs for 2018, 2019, and 2020.
SRF_Terra-FM1_SW_2020.pdf
Terra Shortwave Channel SRF for 2020 (12 monthly values)
(217.5 KiB) Downloaded 120 times
SRF_Terra-FM1_SW_2020.pdf
Terra Shortwave Channel SRF for 2020 (12 monthly values)
(217.5 KiB) Downloaded 120 times
SRF_Terra-FM1_SW_2020.pdf
Terra Shortwave Channel SRF for 2020 (12 monthly values)
(217.5 KiB) Downloaded 120 times
by wfmiller
Mon Jul 24, 2023 1:56 pm America/New_York
Forum: Home
Question: CERES data
Replies: 7

Re: CERES data

SRF_Terra-FM1_TOT_2018.pdf
Terra Total Channel SRF for 2018 (12 monthly values)
(348.85 KiB) Downloaded 132 times


The Terra and Aqua SRFs remained the same starting with May 2020.

I have attached the Terra TOT SRFs for 2018, 2019, and 2020.
SRF_Terra-FM1_TOT_2018.pdf
Terra Total Channel SRF for 2018 (12 monthly values)
(348.85 KiB) Downloaded 132 times
SRF_Terra-FM1_TOT_2018.pdf
Terra Total Channel SRF for 2018 (12 monthly values)
(348.85 KiB) Downloaded 132 times
by wfmiller
Tue Jul 18, 2023 12:50 pm America/New_York
Forum: Home
Question: CERES data
Replies: 7

Re: CERES data

Each CERES instrument has their own Spectral Response File. These files are updated monthly except for NOAA-20 FM6. Please provide which instrument and time period you are interested.