Characteristics =============== Table :ref:`satprodchar` shows for each family and product the spatial and temporal resolutions, as well as the starting time and timestamp. To get an idea of the spatial resolution in kilometers (at the equator), multiply the spatial resolution by 110. Timestamp describes how a precipitation interval is labeled: for example a three-hourly precipitation at 31.12.2000 12:00 with centered timestamp corresponds to a precipitation interval from 31.12.2000 10:30 to 31.12.2000 13:30. Satellite-based precipitation products usually have centered timestamps, while time series from ground data are typically registered with either right or left timestamps. .. latency represents the delay with respect to the precipitation event until a product is available for downloading. It is specially important for near real time application. .. *Time* shown in the table applies only to daily or super daily records. It describes the time precipitation starts for daily products or time and day of the week for weekly products. .. _satprodchar: .. table:: Spatial and temporal resolution of satellite precipitation products +--------------------------+----------+----------+------------+-----------+ | Family/Product | Spatial | Temporal | Since | Timestamp | +==========================+==========+==========+============+===========+ | **ARC2** | +--------------------------+----------+----------+------------+-----------+ | Africa bin | 0.10 deg | daily | 01.01.1983 | center | +--------------------------+----------+----------+------------+-----------+ | Africa geotif | 0.10 deg | daily | 01.01.1983 | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ | **RFE2** | +--------------------------+----------+----------+------------+-----------+ | Africa bin | 0.10 deg | daily | 01.01.2001 | center | +--------------------------+----------+----------+------------+-----------+ | Africa geotif | 0.10 deg | daily | 01.01.2001 | center | +--------------------------+----------+----------+------------+-----------+ | Asia bin | 0.10 deg | daily | 01.05.2001 | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ | **CHIRPS** | +--------------------------+----------+----------+------------+-----------+ | 2.0 0.05deg daily | 0.05 deg | daily | 01.01.1981 | center | +--------------------------+----------+----------+------------+-----------+ | 2.0 0.25deg daily | 0.25 deg | daily | 01.01.1981 | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ | **CMORPH** | +--------------------------+----------+----------+------------+-----------+ | V0x 8km 30 min. | 0.07 deg | 0.5 hour | 01.08.2011 | center | +--------------------------+----------+----------+------------+-----------+ | V0x 0.25deg 3-hourly. | 0.25 deg | 3 hours | 01.06.2014 | center | +--------------------------+----------+----------+------------+-----------+ | V0x 0.25deg daily. | 0.25 deg | daily | 01.06.2014 | center | +--------------------------+----------+----------+------------+-----------+ | V1 8km 30 min. | 0.07 deg | 0.5 hour | 01.01.1998 | center | +--------------------------+----------+----------+------------+-----------+ | V1 0.25deg 3-hourly. | 0.25 deg | 3 hours | 01.01.1998 | center | +--------------------------+----------+----------+------------+-----------+ | V1 0.25deg daily. | 0.25 deg | daily | 01.01.1998 | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ | **GMP Imerg 3B** | +--------------------------+----------+----------+------------+-----------+ | half-hourly V03 | 0.10 deg | 0.5 hour | 12.03.2014 | center | +--------------------------+----------+----------+------------+-----------+ | half-hourly V03 GIS | 0.10 deg | 0.5 hour | 12.03.2014 | center | +--------------------------+----------+----------+------------+-----------+ | daily V03 GIS | 0.10 deg | daily | | center | +--------------------------+----------+----------+------------+-----------+ | monthly V03 | 0.10 deg | monthly | 12.03.2014 | center | +--------------------------+----------+----------+------------+-----------+ | monthly V03 GIS | 0.10 deg | monthly | | center | +--------------------------+----------+----------+------------+-----------+ | half-hourly V03 RT early | 0.10 deg | 0.5 hour | 31.03.2015 | center | +--------------------------+----------+----------+------------+-----------+ | half-hourly V03 RT late | 0.10 deg | 0.5 hour | 07.03.2015 | center | +--------------------------+----------+----------+------------+-----------+ | half-hourly V04 | 0.10 deg | 0.5 hour | | center | +--------------------------+----------+----------+------------+-----------+ | half-hourly V04 GIS | 0.10 deg | 0.5 hour | | center | +--------------------------+----------+----------+------------+-----------+ | daily V04 GIS | 0.10 deg | daily | | center | +--------------------------+----------+----------+------------+-----------+ | monthly V04 | 0.10 deg | monthly | | center | +--------------------------+----------+----------+------------+-----------+ | monthly V04 GIS | 0.10 deg | monthly | | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ | **TRMM Nascom** | +--------------------------+----------+----------+------------+-----------+ | 3B42RT v7 3-hourly | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B42 v7 3-hourly | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B42 v7 daily | 0.25 deg | daily | | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ | **TRMMOpen** | +--------------------------+----------+----------+------------+-----------+ | 3B40RT v7 3-hourly | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B41RT v7 3-hourly | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B42RT v7 3-hourly | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B42RT v7 3-hourly GIS | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B42 v7 3-hourly | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ | 3B42 v7 3-hourly GIS | 0.25 deg | 3 hours | | center | +--------------------------+----------+----------+------------+-----------+ +--------------------------+----------+----------+------------+-----------+ Table :ref:`_satprechostdir` shows the host and directory name from the product server. The download procedure will mirror the directory structure. .. _satprechostdir: .. table:: Hosts and directory names +--------------------------+-------------------------------+---------------------------------------------------------+ | Family/Product | Host | Directory | +==========================+===============================+=========================================================+ | **ARC2** | +--------------------------+-------------------------------+---------------------------------------------------------+ | Africa bin | ftp.cpc.ncep.noaa.gov | /fews/fewsdata/africa/arc2/bin | +--------------------------+-------------------------------+---------------------------------------------------------+ | Africa geotif | ftp.cpc.ncep.noaa.gov | /fews/fewsdata/africa/arc2/geotiff | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ | **RFE2** | +--------------------------+-------------------------------+---------------------------------------------------------+ | Africa bin | ftp.cpc.ncep.noaa.gov | /fews/fewsdata/africa/rfe2/bin | +--------------------------+-------------------------------+---------------------------------------------------------+ | Africa geotif | ftp.cpc.ncep.noaa.gov | /fews/fewsdata/africa/rfe2/geotiff | +--------------------------+-------------------------------+---------------------------------------------------------+ | Asia bin | ftp.cpc.ncep.noaa.gov | /fews/S.Asia/data | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ | **CHIRPS 2.0** | +--------------------------+-------------------------------+---------------------------------------------------------+ | 0.05deg daily | ftp.chg.ucsb.edu | /pub/org/chg/products/CHIRPS-2.0/global_daily/tifs/p05/ | +--------------------------+-------------------------------+---------------------------------------------------------+ | 0.25deg daily | ftp.chg.ucsb.edu | /pub/org/chg/products/CHIRPS-2.0/global_daily/tifs/p25 | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ | **CMORPH** | +--------------------------+-------------------------------+---------------------------------------------------------+ | V0x 8km 30 min. | ftp.cpc.ncep.noaa.gov | /precip/CMORPH_V0.x/RAW/8km-30min/ | +--------------------------+-------------------------------+---------------------------------------------------------+ | V0x 0.25deg 3-hourly. | ftp.cpc.ncep.noaa.gov | /precip/CMORPH_V0.x/RAW/0.25deg-3HLY | +--------------------------+-------------------------------+---------------------------------------------------------+ | V0x 0.25deg daily. | ftp.cpc.ncep.noaa.gov | /precip/CMORPH_V0.x/RAW/0.25deg-DLY_00Z | +--------------------------+-------------------------------+---------------------------------------------------------+ | V1 8km 30 min. | ftp.cpc.ncep.noaa.gov | /precip/CMORPH_V1.0/RAW/8km-30min | +--------------------------+-------------------------------+---------------------------------------------------------+ | V1 0.25deg 3-hourly. | ftp.cpc.ncep.noaa.gov | /precip/CMORPH_V1.0/RAW/0.25deg-3HLY | +--------------------------+-------------------------------+---------------------------------------------------------+ | V1 0.25deg daily. | ftp.cpc.ncep.noaa.gov | /precip/CMORPH_V1.0/RAW/0.25deg-DLY_00Z | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ | **GMP Imerg 3B** | +--------------------------+-------------------------------+---------------------------------------------------------+ | half-hourly V03 RT early | jsimpson.pps.eosdis.nasa.gov | /data/imerg/early | +--------------------------+-------------------------------+---------------------------------------------------------+ | half-hourly V03 RT late | jsimpson.pps.eosdis.nasa.gov | /data/imerg/late | +--------------------------+-------------------------------+---------------------------------------------------------+ | half-hourly V03 | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V03 | +--------------------------+-------------------------------+---------------------------------------------------------+ | monthly V03 | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V03 | +--------------------------+-------------------------------+---------------------------------------------------------+ | half-hourly V03 GIS | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V03 | +--------------------------+-------------------------------+---------------------------------------------------------+ | daily V03 GIS | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V03 | +--------------------------+-------------------------------+---------------------------------------------------------+ | monthly V03 GIS | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V03 | +--------------------------+-------------------------------+---------------------------------------------------------+ | half-hourly V04 | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V04 | +--------------------------+-------------------------------+---------------------------------------------------------+ | monthly V04 | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V04 | +--------------------------+-------------------------------+---------------------------------------------------------+ | half-hourly V04 GIS | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V04 | +--------------------------+-------------------------------+---------------------------------------------------------+ | daily V04 GIS | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V04 | +--------------------------+-------------------------------+---------------------------------------------------------+ | monthly V04 GIS | arthurhou.pps.eosdis.nasa.gov | /gpmallversions/V04 | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ | **TRMM Nascom** | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42RT v7 3-hourly | disc2.nascom.nasa.gov | /data/opendap/TRMM_RT/TRMM_3B42RT.7 | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42 v7 3-hourly | disc2.nascom.nasa.gov | /data/opendap/TRMM_L3/TRMM_3B42.7 | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42 v7 daily | disc2.nascom.nasa.gov | /data/opendap/TRMM_L3/TRMM_3B42.7 | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ | **TRMMOpen** | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B40RT v7 3-hourly | trmmopen.gsfc.nasa.gov | /pub/merged/combinedMicro/ | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B41RT v7 3-hourly | trmmopen.gsfc.nasa.gov | /pub/merged/calibratedIR | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42RT v7 3-hourly | trmmopen.gsfc.nasa.gov | /pub/merged/mergeIRMicro | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42RT v7 3-hourly GIS | trmmopen.gsfc.nasa.gov | /pub/gis | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42 v7 3-hourly | trmmopen.gsfc.nasa.gov | /pub/TMPA/TRMMstandard/3B42 | +--------------------------+-------------------------------+---------------------------------------------------------+ | 3B42 v7 3-hourly GIS | trmmopen.gsfc.nasa.gov | /trmmdata/GIS | +--------------------------+-------------------------------+---------------------------------------------------------+ +--------------------------+-------------------------------+---------------------------------------------------------+ Table :ref:`satprecprodstr` shows whether registering is necessary, as well as the folder structure and products sub-directory. The folder structure means: * [4]: YYYY * [4, 2]: YYYY/mm * [4, 2, 2]: YYYY/mm/dd * [4, 3]: YYYY/DoY (day of year) * [4, 6]: YYYY/YYYYmm * [6]: YYYYmm .. _satprecprodstr: .. table:: Registration, structure, and sub-directories +--------------------------+-------+-----------+---------+ | Family/Product | Login | Structure | Sub-dir | +==========================+=======+===========+=========+ | **ARC2** | +--------------------------+-------+-----------+---------+ | Africa bin | no | | | +--------------------------+-------+-----------+---------+ | Africa geotif | no | | | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ | **RFE2** | +--------------------------+-------+-----------+---------+ | Africa bin | no | | | +--------------------------+-------+-----------+---------+ | Africa geotif | no | | | +--------------------------+-------+-----------+---------+ | Asia bin | no | | | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ | **CHIRPS 2.0** | +--------------------------+-------+-----------+---------+ | 0.05deg daily | no | [4] | | +--------------------------+-------+-----------+---------+ | 0.25deg daily | no | [4] | | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ | **CMORPH** | +--------------------------+-------+-----------+---------+ | V0x 8km 30 min. | no | [4, 6] | | +--------------------------+-------+-----------+---------+ | V0x 0.25deg 3-hourly. | no | [4, 6] | | +--------------------------+-------+-----------+---------+ | V0x 0.25deg daily. | no | [4, 6] | | +--------------------------+-------+-----------+---------+ | V1 8km 30 min. | no | [4] | | +--------------------------+-------+-----------+---------+ | V1 0.25deg 3-hourly. | no | [4, 6] | | +--------------------------+-------+-----------+---------+ | V1 0.25deg daily. | no | [4, 6] | | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ | **GMP Imerg 3B** | +--------------------------+-------+-----------+---------+ | half-hourly V03 RT early | yes | [6] | imerg | +--------------------------+-------+-----------+---------+ | half-hourly V03 RT late | yes | [6] | imerg | +--------------------------+-------+-----------+---------+ | half-hourly V03 | yes | [4, 2, 2] | imerg | +--------------------------+-------+-----------+---------+ | monthly V03 | yes | [4, 2, 2] | imerg | +--------------------------+-------+-----------+---------+ | half-hourly V03 GIS | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ | daily V03 GIS | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ | monthly V03 GIS | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ | half-hourly V04 | yes | [4, 2, 2] | imerg | +--------------------------+-------+-----------+---------+ | monthly V04 | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ | half-hourly V04 GIS | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ | daily V04 GIS | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ | monthly V04 GIS | yes | [4, 2, 2] | gis | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ | **TRMM Nascom** | +--------------------------+-------+-----------+---------+ | 3B42RT v7 3-hourly | no | [4, 3] | | +--------------------------+-------+-----------+---------+ | 3B42 v7 3-hourly | no | [4, 3] | | +--------------------------+-------+-----------+---------+ | 3B42 v7 daily | no | [4, 2] | | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ | **TRMMOpen** | +--------------------------+-------+-----------+---------+ | 3B40RT v7 3-hourly | no | [4, 2] | | +--------------------------+-------+-----------+---------+ | 3B41RT v7 3-hourly | no | [4, 2] | | +--------------------------+-------+-----------+---------+ | 3B42RT v7 3-hourly | no | [4, 2] | | +--------------------------+-------+-----------+---------+ | 3B42RT v7 3-hourly GIS | no | [6] | | +--------------------------+-------+-----------+---------+ | 3B42 v7 3-hourly | no | [4, 2, 2] | | +--------------------------+-------+-----------+---------+ | 3B42 v7 3-hourly GIS | no | [4, 2, 2] | | +--------------------------+-------+-----------+---------+ +--------------------------+-------+-----------+---------+ Table :ref:`satprodimpl` shows the satellite-based precipitation products for which download and rasterization classes are implemented. Chapter :ref:`extsatprecprod` explains how to create classes for new products. .. _satprodimpl: .. table:: download and rasterization classes +--------------------------+-----------------------------+-----------------------------------+ | Family/Product | Download class | Rasterize class | +==========================+=============================+===================================+ | **ARC2** | +--------------------------+-----------------------------+-----------------------------------+ | Africa bin | ARC2AfricaBinFTP | ARC2AfricaBinRasterize | +--------------------------+-----------------------------+-----------------------------------+ | Africa geotif | ARC2AfricaTifFTP | ARC2AfricaTifRasterize | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ | **RFE2** | +--------------------------+-----------------------------+-----------------------------------+ | Africa bin | RFE2AfricaBinFTP | RFE2AfricaBinRasterize | +--------------------------+-----------------------------+-----------------------------------+ | Africa geotif | RFE2AfricaTifFTP | RFE2AfricaTifRasterize | +--------------------------+-----------------------------+-----------------------------------+ | Asia bin | RFE2AsiaBinFTP | RFE2AsiaBinRasterize | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ | **CHIRPS 2.0** | +--------------------------+-----------------------------+-----------------------------------+ | 0.05deg daily | Chirps20GlobalDaily05TifFTP | Chirps20GlobalDaily05TifRasterize | +--------------------------+-----------------------------+-----------------------------------+ | 0.25deg daily | Chirps20GlobalDaily25TifFTP | Chirps20GlobalDaily25TifRasterize | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ | **CMORPH** | +--------------------------+-----------------------------+-----------------------------------+ | V0x 8km 30 min. | CMorphV0x8km30minFTP | CMorphV0x8km30minRasterize | +--------------------------+-----------------------------+-----------------------------------+ | V0x 0.25deg 3-hourly. | CMorphV0x025deg3hlyFTP | CMorphV0x025deg3hlyRasterize | +--------------------------+-----------------------------+-----------------------------------+ | V0x 0.25deg daily. | CMorphV0x025degDailyFTP | CMorphV0x025degDailyRasterize | +--------------------------+-----------------------------+-----------------------------------+ | V1 8km 30 min. | CMorphV1x8km30minFTP | CMorphV1x8km30minRasterize | +--------------------------+-----------------------------+-----------------------------------+ | V1 0.25deg 3-hourly. | CMorphV1x025deg3hourlyFTP | CMorphV1x025deg3hlyRasterize | +--------------------------+-----------------------------+-----------------------------------+ | V1 0.25deg daily. | CMorphV1x025degDailyFTP | CMorphV1x025degDailyRasterize | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ | **GMP Imerg 3B** | +--------------------------+-----------------------------+-----------------------------------+ | half-hourly V03 RT early | GPMImerg3BHHRearlyFTP | GPMImerg3BHHRearlyRasterize | +--------------------------+-----------------------------+-----------------------------------+ | half-hourly V03 RT late | GPMImerg3BHHRlateFTP | GPMImerg3BHHRlateRasterize | +--------------------------+-----------------------------+-----------------------------------+ | half-hourly V03 | GPMImerg3BHHRv03FTP | GPMImerg3BHHRv03Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | monthly V03 | GPMImerg3BMOv03FTP | GPMImerg3BMOv03Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | half-hourly V03 GIS | GPMImergGIS3BHHRv03FTP | GPMImergGIS3BHHRv03Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | daily V03 GIS | GPMImergGIS3BDailyV03FTP | GPMImergGIS3BDailyV03Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | monthly V03 GIS | GPMImergGIS3BMOv03FTP | GPMImergGIS3BMOv03Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | half-hourly V04 | GPMImerg3BHHRv04FTP | GPMImerg3BHHRv04Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | monthly V04 | GPMImerg3BMOv04FTP | GPMImerg3BMOv04Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | half-hourly V04 GIS | GPMImergGIS3BHHRv04FTP | GPMImergGIS3BHHRv04Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | daily V04 GIS | GPMImergGIS3BDailyV04FTP | GPMImergGIS3BDailyV04Rasterize | +--------------------------+-----------------------------+-----------------------------------+ | monthly V04 GIS | GPMImergGIS3BMOv04FTP | GPMImergGIS3BMOv04Rasterize | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ | **TRMM Nascom** | +--------------------------+-----------------------------+-----------------------------------+ | 3B42RT v7 3-hourly | TRMMnascom3B42DailyFTP | TRMMnascom3B42RTv7x3hRasterize | +--------------------------+-----------------------------+-----------------------------------+ | 3B42 v7 3-hourly | TRMMnascom3B42RTv7x3hFTP | TRMMnascom3B42V7x3hRasterize | +--------------------------+-----------------------------+-----------------------------------+ | 3B42 v7 daily | TRMMnascom3B42V7x3hFTP | TRMMnascom3B42DailyRasterize | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ | **TRMMOpen** | +--------------------------+-----------------------------+-----------------------------------+ | 3B40RT v7 3-hourly | TRMMopen3B40RTv7x3hFTP | | +--------------------------+-----------------------------+-----------------------------------+ | 3B41RT v7 3-hourly | TRMMopen3B41RTv7x3hFTP | | +--------------------------+-----------------------------+-----------------------------------+ | 3B42RT v7 3-hourly | TRMMopen3B42RTv7x3hFTP | | +--------------------------+-----------------------------+-----------------------------------+ | 3B42RT v7 3-hourly GIS | TRMMopen3B42RTv7x3hGISFTP | | +--------------------------+-----------------------------+-----------------------------------+ | 3B42 v7 3-hourly | TRMMopen3B42v7x3hFTP | | +--------------------------+-----------------------------+-----------------------------------+ | 3B42 v7 3-hourly GIS | TRMMopen3B42v7x3hGISFTP | | +--------------------------+-----------------------------+-----------------------------------+ +--------------------------+-----------------------------+-----------------------------------+ .. Besides products' performance when compared to ground data, other important characteristics are shown in Background information ______________________ The satellite instruments that generate images used for precipitation products are, among others: * Precipitation Radar: * TRMM Precipitation Radar (https://pmm.nasa.gov/TRMM/PR ) * GPM Dual-frequency Precipitation Radar (https://pmm.nasa.gov/gpm/flight-project/dpr) * Microwave Imager: * TRMM Microwave Imager (https://pmm.nasa.gov/TRMM/TMI) * GPM Microwave Imager (https://pmm.nasa.gov/GPM/flight-project/GMI) * Advanced Microwave Sounding Unit (http://disc.sci.gsfc.nasa.gov/AIRS/documentation/amsu_instrument_guide.shtml) * Visible and infrared * Visible and Infrared Scanner (https://pmm.nasa.gov/TRMM/VIRS) * Spinning Enhanced Visible and Infrared Imager (http://eoedu.belspo.be/en/satellites/meteosat.htm) Examples of algorithms used to combine different imageries: * Morphing algorithm (CMORPH) * Artificial neural networks (PERSIANN) * Microwave merging algorithm (TRMM/GPM) * Microwave calibrated infrared precipitation * Algorithms to include ground data