## Color Image Data png images of Full-disk, Japan area and Target area, compositing three visible bands (blue: 0.47 micron; green: 0.51 micron; red: 0.64 micron).
where YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; and hh: 2-digit hour of timeline.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; bb: 2-digit band number (varies from "01" to "16"); jj: spatial resolution ("05": 0.5km, "10": 1.0km, "20": 2.0km); kk: segment number (varies from "01" to "10"); and ll: total number of segments (fixed to "10").
## Japan Area HS_Hnn_YYYYMMDD_hhmm_Bbb_JPee_Rjj_S0101.DAT
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; bb: 2-digit band number (varies from "01" to "16"); ee: observation number on the timeline (varies from "01" to "04"); and jj: spatial resolution ("05": 0.5km, "10": 1.0km, "20": 2.0km);
## Target Area HS_Hnn_YYYYMMDD_hhmm_Bbb_R3ee_Rjj_S0101.DAT
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; bb: 2-digit band number (varies from "01" to "16"); ee: observation number on the timeline (varies from "01" to "04"); and jj: spatial resolution ("05": 0.5km, "10": 1.0km, "20": 2.0km);
## Color Image Data PI_Hnn_YYYYMMDD_hhmm_TRC_FLDK_Rjj_PGPDF,png (Full-disk) PI_Hnn_YYYYMMDD_hhmm_TRC_JPee_Rjj_PLLJP.png (Japan Area) PI_Hnn_YYYYMMDD_hhmm_TRC_R3ee_Rjj_PLLTG.png (Target Area)
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; ee: observation number on the timeline (varies from "01" to "04"); and jj: spatial resolution ("05": 0.5km, "10": 1.0km, "20": 2.0km);
where YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; and hh: 2-digit hour of timeline.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; bb: 2-digit band number (varies from "01" to "16"); xxxxx: pixel number; ("2401": 5km resolution, "6001": 2km resolution, ) yyyyy: line number; ("2401": 5km resolution, "6001": 2km resolution, )
## Japan Area NC_Hnn_YYYYMMDD_hhmm_rbb_FLDK.xxxxx_yyyyy.nc
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; bb: 2-digit band number (fixed to "14"); xxxxx: pixel number; (fixed to "2701" : 1km resolution) yyyyy: line number; (fixed to "2601" : 1km resolution)
## Aerosol Property (day-time only) Latest version: Version 3.1 (Level 2), Version 3.1 (Level 3) Observation area: Full-disk Temporal resolution: 10-minutes (Level 2),1-hour (Level 3), 1-day (Level 3), 1-month (Level 3) Spatial resolution: 5km (Pixel number: 2401, Line number: 2401) NOTE: Angstrom exponent included this product is under validation. Users should keep in mind that the data is NOT quality assured. Improvement in Version 3.1: Updated error covariance of aerosol model used for a priori estimate or retrieval. Updated alternative calibration coefficients for Himawari-9.
NOTE: Hourly data (Level 3 with temporal resolution of 1-hour) is calculated from 10-minute data (Level 2) with quality level 5. Daily data (Level 3 with temporal resolution of 1-day) is "daily minimum SST" calculated from hourly data. Monthly data (Level 3 with temporal resolution of 1-month) is "monthly mean SST" calculated from hourly data at each pixel. File version index (fv): Himawari SST product file has a file version index (fvXX) in the filename to describe the number of processing times. File version index will be updated for example when the L3 product file will be re-generated due to L1 missing or delay. The P-tree system distributes the newest product file regarding the file version index.
Improvement in Version 2.0: The SST method has been updated with an improved optimal estimation scheme and some minor changes. Cloud masking has been updated with additional use of visible and short wavelength infrared data and a new test to detect clouds with the cloud top temperature higher than SST. In the update, some tests were modified based on the cloud masking developed for SGLI SST.
Improvement in Version 2.1: Small changes were made for Himawari-9 data processing. The Bi-Spectral Filter (DOI: 10.1175/JTECH-D-22-0051.1) is applied for denoising the AHI infrared data.
## Nighttime Sea Surface Temperature Latest version: Version 2.1 Observation area: Full-disk Temporal resolution: 1-hour (Level 3) Spatial resolution: 2km (Pixel number: 6001, Line number: 6001)
## Short Wave Radiation / Photosynthetically Available Radiation Latest version: Version 2.1 Observation area: Full-disk Temporal resolution: 10-minutes (Level 2), 1-hour (Level 3), 1-day (Level 3), 1-month (Level 3) Spatial resolution: 5km (Pixel number: 2401, Line number: 2401) 1km Japan* (Pixel number: 2701, Line number: 2601) * This area coverd 24N-50N, 123E-150E. NOTE: This product is a beta version and is intended to show the preliminary result from Himawari-8. Users should keep in mind that the data is NOT quality assured.
Ver. 2.0: Vicarious calibration coefficients are updated by considering their temporal change. Ancillary ozone data source is changed to JMA global chemical transport model data (MRI-CCM2).
Ver. 2.1: Vicarious calibration coefficients are updated.
## Chlorophyll-a Latest version: 2.1 Observation area: Full-disk Temporal resolution: 1-hour (Level 3), 1-day (Level 3), 1-month (Level 3) Spatial resolution: 5km (Pixel number: 2401, Line number: 2401) 1km Japan* (Pixel number: 2701, Line number: 2601) NOTE: This product is a beta version and is intended to show the preliminary result from Himawari-8. Users should keep in mind that the data is NOT quality assured.
Ver. 2.0: Vicarious calibration coefficients are updated by considering their temporal change. Ancillary ozone data source is changed to JMA global chemical transport model data (MRI-CCM2).
Ver. 2.1: Vicarious calibration coefficients are updated.
where VER: algorithm version; YYYY: 4-digit year observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; and hh: 2-digit hour of timeline.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; VER: version; xxxxx: pixel number; and yyyyy: line number.
### Sea Surface Temperature YYYYMMDDhhmmss-JAXA-L2P_GHRSST-SSTskin-Hnn_AHI-vVER-v02.0-fvFVER.nc
where YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; ss: 2-digit seconds (fixed to "00"); nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 VER: algorithm version; and FVER: file version;.
### Short Wave Radiation/Photosynthetically Available Radiation Hnn_YYYYMMDD_hhmm_RFLVER_FLDK_xxxxx_yyyyy.nc (5km) Hnn_YYYYMMDD_hhmm_rFLVER_FLDK_xxxxx_yyyyy.nc (1km)
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; VER: algorithm version; xxxxx: pixel number; and yyyyy: line number.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; VER: version; xxxxx: pixel number; and yyyyy: line number.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; VER: version; xxxxx: pixel number; and yyyyy: line number.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; LL: 2-digit temporal resolution (L3:hourly, 1D:daily, 1M:monthly) VER: algorithm version; xxxxx: pixel number; and yyyyy: line number.
### Sea Surface Temperature YYYYMMDDhhmmss-JAXA-L3C_GHRSST-SSTskin-Hnn_AHI-vVER-v02.0-fvFVER.nc (hourly) YYYYMMDDhhmmss-JAXA-L3C_GHRSST-SSTskin-Hnn_AHI-vVER_daily-v02.0-fvFVER.nc (daily) Hnn_YYYYMMDD_HHMM_1MSSTVER_FLDK.xxxxx_yyyyy.nc (monthly)
where YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline (fixed to "00"); ss: 2-digit seconds of timeline (fixed to "00"); nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 VER: algorithm version; FVER: file version; xxxxx: pixel number; and yyyyy: line number.
### Nighttime Sea Surface Temperature YYYYMMDDhhmmss-JAXA-L3C_GHRSST-SSTskin-Hnn_AHI-vVER_nighttime-v02.0-fvFVER.nc
where YYYY: 4-digit year observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline(fixed to "00"); ss: 2-digit seconds of timeline(fixed to "00"); nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 VER: algorithm version; and FVER: file version;.
### Short Wave Radiation/Photosynthetically Available Radiation Hnn_YYYYMMDD_hhmm_LL_RFLVER_FLDK.xxxxx_yyyyy.nc (5km) Hnn_YYYYMMDD_hhmm_LL_rFLVER_FLDK.xxxxx_yyyyy.nc (1km)
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; LL: 2-digit temporal resolution (L3:hourly, 1D:daily, 1M:monthly) VER: algorithm version; xxxxx: pixel number; and yyyyy: line number.
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; LL: 2-digit temporal resolution (1H:hourly, 1D:daily, 1M:monthly) VER: algorithm version; xxxxx: pixel number; and yyyyy: line number.
### Wild Fire Hnn_YYYYMMDD_hhmm_LLWLFVER_FLDK.xxxxx_yyyyy.csv
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-digit minutes of timeline; LL: 2-digit temporal resolution (L3:hourly, 1D:daily, 1M:monthly) VER: algorithm version; xxxxx: pixel number; and yyyyy: line number.
All data except for Wild Fire is in NetCDF4 format and compressed with gzip. Please note that NetCDF format of SST (except monthly product) follows the GHRSST Data Specification (GDS) 2.0. Details of GDS2.0, see the Group of High Resolution Sea Surface Temperature (GHRSST) web site (https://www.ghrsst.org/).
File format of Wild Fire product is CSV. Please see following file (H8_WLF_format.txt) for more details.
# Model Outputs ## Model Aerosol Property by MRI/JMA Latest version: Beta Version Area: Global Temporal resolution: 1-hour (Level 4) Spatial resolution: Longitude 0.375 deg., Latitude 0.37147 to 0.37461 deg. (Gaussian) (Pixel number: 960, Line number: 480) NOTE: This product is the forecast (every one hour) of aerosol properties by the MRI/JMA global aerosol model called Model of Aerosol Species IN the Global AtmospheRe (MASINGAR). This product is assimilated by Himawari L3 aerosol optical depth at 00, 03, 06, and 09UTC. The opposite side of the Himawari observation area is assimilated at 12 and 18UTC using MODIS/Terra+Aqua L3 Value-added Aerosol Optical Depth - NRT dataset due to lack of aerosol retrievals by Himawari.(As for the image on the top page, there are cases where preliminary forecast is displayed that was derived by assimilating observation data before the previous day.) Please refer to the reference below for the assimilation method etc. The aerosol data assimilation system based on MASINGER was developed by Meteorological Research Institute and Kyushu University. The products are produced at Meteorological Research Institute, and provided by JAXA P-Tree System, Japan Aerospace Exploration Agency (JAXA).
Acknowledgements: MODIS/Terra+Aqua L3 Value-added Aerosol Optical Depth - NRT datasets were acquired from the Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC), located in the Goddard Space Flight Center in Greenbelt, Maryland (https://ladsweb.nascom.nasa.gov/).
## Model Sea Surface Temperature by JAXA/JAMSTEC Latest version: v20170705 Area: Around Japan (117E-150E, 17N-50N) Temporal resolution: 1-hour (Level 4) Spatial resolution: About 3km (1/36 deg.) (Pixel number: 1190, Line number: 1190) NOTE: This research is JAXA-JAMSTEC joint research and a part of the Japan Coastal Ocean Predictability Experiment (JCOPE). This product is constructed by data assimilation using high resolution regional ocean model "JCOPE-T" developed by JAMSTEC and observation data including the 4 types satellite SST data provided by JAXA. When we do the data assimilation, we do the bias correction of satellite SST data using GCOM-W/AMSR2 SST data as refer to reference value, because the bias in observation data is undesirable for data assimilation. Near Real-Time data (analysis and forecast) and Best Estimate data are included in this product.
Update frequency and period are follow.
Near Real-Time data: Every day except Saturdays. - Analysis (ANAL): 5-days (replaced every update) - Forecast (FCST): 16-days (replaced every update) Best Estimate data: Every week (update in the beginning of the week; Sunday or Monday) - This is delay mode data which is provided about two weeks late. - 7-days data are added every update.
## Ensemble ocean analysis product "LORA" by JAXA/RIKEN Latest version: v1.0 Area: Western North Pacific (108E-180,12N-50N), Maritime Continent (95E-136E,18S-30N) Temporal resolution: 1-day (Level 4) Spatial resolution: About 10km (0.1 degree), 50 sigma-layers Data: - Daily averaged ensemble mean and spread (one 2D-variable, five 3D-variables): Sea surface height, temperature, salinity, and zonal, meridional, and vertical velocities - Daily averaged all sea surface ensemble (five 2D-128 ensemble variables): Sea surface height, temperature, salinity, and zonal and meridional velocities - Ensemble mean of each term in the daily averaged mixed layer temperature and salinity budget equations and of the daily averaged related variables (forty-one 2D-variables, see MLT_MLS_namelist_en.pdf for more details) Note: An ensemble ocean analysis product, LORA, is created by a regional ocean data assimilation system, sbPOM-LETKF, which is developed by RIKEN. sbPOM-LETKF assimilates the following satellite and in-situ observations at a 1-day interval: - Satellite-based sea surface temperature (Himawari-8/AHI and GCOM-W/AMSR2) provided by JAXA - Satellite-based sea surface salinity (SMAP and SMOS, respectively) provided by NASA and ESA - Satellite-based sea surface height provided by CMEMS - in-situ temperature and salinity (GTSPP and AQC Argo, respectively) provided by NOAA and JAMSTEC
This product has been created under a JAXA-RIKEN collaborative research project.
where VER: algorithm version; YYYY: 4-digit year observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; and hh: 2-digit hour of timeline.
### Mpdel Sea Surface Temperature (JAXA/JAMSTEC) /pub/model +---/SST +---/JCPT_DA +---/[VER] +---/FCST +---/ANAL +---/BEST +---/[YYYYMM] +---/[DD] where VER: algorithm version; YYYY: 4-digit year observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; and hh: 2-digit hour of timeline.
FCST: Near Real-Time data (Forecast) ANAL: Near Real-Time data (Analysis) BEST: Best Estimate data
where VER: algorithm version; AREA: Analysis area; MC: Maritime Continent WNP: North West Pacific CAT: category ens: Daily averaged all sea surface ensemble mean: Ensemble mean and daily average of mixed layer related variabless sprd: Daily averaged ensemble mean and spread YYYY: 4-digit year observation start time (timeline); MM: 2-digit month of timeline; and DD: 2-digit day of timeline.
## Level 4 (model parameters) ### Model Aerosol Property (MRI/JMA)
Hnn_YYYYMMDD_hhmm_MSARPVER_ANL.xxxxx_yyyyy.nc
where nn: 2-digit number of Himawari satellite; 08: Himawari-8 09: Himawari-9 YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline; VER: algorithm version; xxxxx: pixel number; and yyyyy: line number.
### Model Sea Surface Temperature (JAXA/JAMSTEC) JCPT_DA_JPN03_SST_YYYYMMDD_hhmm.nc
where YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; DD: 2-digit day of timeline; hh: 2-digit hour of timeline; mm: 2-gidit minutes of timeline;
where prm: parameters; el: sea surface height s: salimity t: temprature u: zonal velocity v: meridional velocity w: vertical velocity ** See MLT_MLS_namelist_en.pd for mixed layer related parameters YYYY: 4-digit year of observation start time (timeline); MM: 2-digit month of timeline; and DD: 2-digit day of timeline.
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