Newly released trmm version 7 products, gpcp version 2. Trmm version 6 v6 3b42 rain estimates shows improvements over version 5 v5 in terms of bias and mean absolute difference mad. The 3b42 retrieval algorithm used for this product is based on the technique by huffman et al. You find a variety of products there, such as daily or monthly data products esp. The work is being carried out as part of the tropical rainfall measuring mission trmm, an international project of nasa and jaxa designed to provide improved estimates of precipitation in the tropics, where the bulk of the earths precipitation occurs. Trend of extreme rainfall events using suitable global. This daily accumulated rainfall product, in mmday, is derived from the original 3hourly trmm 3b42 product. Comparison to coincident daily surface observations with a focus on the western basin in terms of both precipitation amount and occurrence computing success rates based on a factor of 2 agreement for. The tropical rainfall measuring mission trmm blended rainfall product 3b42 v6 data set has been used for intercomparison with observations from a high density raingauge network over the western state of maharashtra, india. Trmm 3b42 data, using data from 52 rain gauge stations around the meichuan watershed, which is a representative watershed of poyang lake basin in china. Validation was performed using three spatial extents, including 1 trmm grid face from the synoptic station 1ptrm, 3 trmm points surrounding the synoptic station 3ptrm and 5 trmm. Assessing the accuracy and applied use of satellitederived precipitation estimates over nepal.
Tmpa products 3b42 version 6 released in june 2004 and version 7. The newly released trmm version 7 consists of several changes including new parameters, new products, metadata, data structures, etc. Seasonal analysis shows that spring precipitations are detected more accurately than winter precipitation, especially for the mountainous areas all over the country. Trmm began recording data in december 1997 and ended in april 2015. Precipitation in the mediterranean basin as seen from the 20002010 trmm 3b42 v6 database objectives and strategy strategy. For convenience, the data set is referred to in this document as the tmpa. Assessment of the trmm 3b42 precipitation product in. Read in a trmm hdf data file, and write out userselected sds arrays and vdata tables as separate flat binary files. Thailand daily rainfall and comparison with trmm products. Abstractthis study investigates rainfall characteristics in the upper zambezi river basin and implications for rainfed agriculture. The trmm 3b42 v6 processing algorithm is described. Subdaily precipitation estimates made by the tropical rainfall measuring mission trmm multisatellite precipitation analysis tmpa are freely available for download, providing a spatial and temporal precipitation data set.
The year trmm based tropical cyclone precipitation feature tcpf database haiyan jiang1, chuntao liu2, and edward j. Evaluation of trmm 3b42 tmpa precipitation estimates and wrf retrospective precipitation simulation over the paci. The tropical rainfall measuring mission trmm is a joint mission between nasa and the japan aerospace exploration agency jaxa designed to monitor. Crespo3 1ku leuven, department of civil engineering. Evaluation of three satellite precipitation products trmm. The official website for nasa precipitation measurement missions. Does anyone know how to download a project from nitrous. Multidimensional evaluation of the trmm 3b43v7 satellite. This dataset and other trmm data is available through the trmm data access page, which is located at nasas goddard daac. Pdf performance evaluation of rainfall estimates by trmm. Comparisons of different satellite products show that adjpersiann and trmm 3b42 v6 have better performance, and cmorph has poor estimation, especially over the zagros mountains.
The state of maharashtra was chosen for the intercomparison exercise primarily because of its diverse rainfall regime. Or, locate your product using the categories below. Basic information on 3b42, trmm and other satellites rainfall product. Evaluation of the trmm precipitation estimates is an active area of research. Posadas and roberto quiroz, title 4600 journal of climate volume 25 precipitation characteristics of the south american monsoon system derived from multiple datasets, year 2011. The vic hydrological model was used to simulate the streamflow driven by rtv7v7 precipitation products in the ganjiang river basin. Wmo station and trmm 3b42 v6 precipitation data both resulted in the same analog year 2004 05 for the target year of.
The algorithm applied is the version 7 trmm multisatellite precipitation analysis. Evaluation of satellitebased precipitation estimation. This research compares data from the tropical rainfall measuring mission 3b42 v6 with data obtained from 19 synoptic rain gauges during the period 19982010 over the semiarid climate of khorasan razavi, iran. Nasas earth observing system data and information system eosdis is a key core capability in nasas earth science data systems program for archiving and distributing earth science data from multiple missions to users. Trmm 3b42 v6, trmm 3b42 v7, trmm 3b42 v7a and trmm 3b42 rt in comparison to in situ gauge data from more than 150 rain gauges in morocco and across the mena region. The interpolated data from 25 rain gauges were compared with both versions of trmm. Evaluating the trmm multisatellite precipitation analysis. The international precipitation working group ipwg, established in 2001 and cosponsored by the coordination group for meteorological satellites cgms and world meteorological organization wmo, provides a forum for operational and research users of meteorological data to discuss and exchange information on precipitation measurements and their use in several applications, such as hydrology. Routine production of trmm pr precipitation estimates ended on october 7, 2014 due to the continuous descent and final decommissioning of the trmm satellite. These were correlated with maize yields obtained by applying a svatmodel.
Thailand daily rainfall and comparison with trmm products authors. Performance evaluation of rainfall estimates by trmm multi. One quite valuable site is the trmm section of ges disc including its download portal mirador nasa goddard earth sciences data and information service center. There is an excellent code made by florian detsch to download the daily product. Precipitation products are first compared against ground observations.
Sign in sign up instantly share code, notes, and snippets. The global precipitation measurement gpm mission provides a new generation of satellite observations of rain and snow worldwide every three hours for scientific research and societal benefits. Tropical rainfall measuring mission and other data bestestimate precipitation rate. More details about trmm rainfall products can be found at huffman et al. Trmm data downloads precipitation measurement missions.
The trmm 3b42 dataset is available from march 2000 to recent at a spatial resolution of 0. Japan satellite mission to monitor tropical and subtropical precipitation and to estimate its associated latent heating. Gpm data downloads precipitation measurement missions. Trmm was successfully launched on november 27, at 4. Historical tmpa data can also be download from the nasa ges disc at. The trmm satellite was launched on november 27, 1997.
This dataset is the output from the tmpa trmm multisatellite precipitation analysis algorithm, and provides precipitation estimates in the trmm regions that have the nearlyzero bias of the trmm combined instrument precipitation estimate and the dense sampling of highquality microwave data with fillin using microwavecalibrated. The tropical rainfall measuring mission trmm is a satellite venture monitoring tropical and. Do not download multiple files at once use different ftp client. How to download the trmm 3b42 3 hourly precipitation data net cdf at once as there are more than 50 thousand links. Nasa tropical rainfall measuring mission trmm precipitation radar pr derived rainfall information will be used to.
Does anyone know how to download trmm 3b42 time series data. Newly released trmm version 7 products, other precipitation datasets and data services at nasa ges disc zhong liu1,4, d. Assessing the accuracy and applied use of satellite. The study covered a large part of the moroccan territory, but the analysis was focused only for the average annual precipitation. There are lots of sources to download raw trmm data. This study evaluated tropical rainfall measuring mission trmm multisatellite precipitation analysis tmpa product i. Erddap satellite product trmm trmm pr 3b42 3hourly v6. How to download the trmm 3b42 3 hourly precipitation data net.
Evaluation of trmm 3b42 precipitation product using rain. This work provides a first validation of five different satellitebased precipitation products trmm 3b42 v6 and v7, rfe 2. Environmental sciences correction for cesium7 deposition and contamination of japanese soils due to the fukushima nuclear accident, by teppei j. The correspondence between five precipitation products, including cmorph, gpcp2, trmm 3b43, gpcc, and itpcas, and groundbased measurements of precipitation were evaluated on annual, seasonal, and monthly scales during 20002014 in the qinlingdaba mountains over china, which is a significant area with vital value of climate and hydrology. The trmm 3b42 lacks the fourth step and has a few simplifications. Evaluation of multisatellite trmm derived rainfall. Unified user interface at nasa, uui, data, ges disc, datasets. Using griddap to request data and graphs from gridded datasets griddap lets you request a data subset, graph, or map from a gridded dataset for example, sea surface temperature data from a satellite, via a specially formed url. Evaluation of precipitation from cmorph, gpcp2, trmm 3b43.
The data is only saved locally on your computer and never transferred to us. Both the latest version 7 v7 and previous version 6 v6 of trmm 3b42 data were compared and. Im trying to download trmm 3b42 3hour binary data for a given time span from this nasa ftp server. Apdrc datadoc trmm tmpa rainfall estimate l3 3 hour 0.
These missions study rainfall and other types precipitation around the globe. The tropical rainfall measuring mission trmm is a joint u. This study conducted a comprehensive evaluation of three satellite precipitation products trmm tropical rainfall measuring mission 3b42, cmorph the climate prediction center cpc morphing algorithm, and persiann precipitation estimation from remotely sensed information using artificial neural networks using data from 52 rain gauge stations over the meichuan watershed, which is a. Rainfall characteristics and their implications for rain. This one worked just fine i now have skype 6 hooray. For example, hydrometeor profiles in 2a12 now have 28 layers 14 in v6. The tropical rainfall measuring mission trmm is a joint space mission between nasa and japans national space development agency designed to monitor and study tropical and subtropical precipitation and the associated release of energy. It is not from the suite of the official trmm products, and is generated at nasa ges disc as a value added product primarily for visualization purposes in giovanni, even though the data are also available for download. Based on the observed precipitation data and trmm tropical rainfall measuring mission 3b42 rtv7 and 3b42 v7 precipitation products from 2003 to 2010, the extreme precipitation and streamflow in the ganjiang river basin were analyzed.
You are downloading from trmmopen which is an official download source of. Burkhart, sabine eckhardt, and tetsuzo yasunari, which appeared in issue 49, december 6, 2011, of proc natl acad sci usa 108. Evaluation of satellitebased rainfall products for. Further, we have used tropical rainfall measuring mission trmm 3b42 v7 precipitation product in this analysis for validating the ground station data. Register your product quick and easy help and support whenever you need it. Trmm data products are archived at and distributed by ges disc. Seventeen indices describing the character of each rainy season were calculated using a biascorrected version of trmm b42 v6 rainfall estimate for 19982010.