The PMW rain rates of TRMM, NOAA-18/19 and MetOp-A may be more accurate. In tropical area, TRMM

PR and PMW rain rate are more accurate. And you can get trmm historical data from ftp://trmmopen.gsfc.nasa.gov/pub/ and others from http://www.nsof.class.noaa.gov/. They are all free and easy to get!

Thanks a lot!

I work in Italy, what is the best product in my study area?

And, please can you give me more detailed info to get the data?

On the link of NOAA I did not fond how to get the data.

Hi all,

please can somebody indicate the quicker and easier link where to get 3-hour TMPA rainfall data?

Thanks in advance!

Thanks again Alex,

I well know the papers by Crow et al. and I would like to use the satellite rainfall data for a similar topic but using a different procedure (see https://www.researchgate.net/publication/234127582_A_new_method_for_rainfall_estimation_through_soil_moisture_observations?ev=prf_pub)

Article A new method for rainfall estimation through soil moisture o...

Another source of high-quality satellite products is at Remote Sensing Systems

(http://www.ssmi.com/)

Hi Luca,

I've worked with satellite-rainfall over northeastern Italy. Specifically, I've used TRMM 3B42, CMORPH and PERSIANN products (which are widely used in satellite-rainfall studies). They are all quasi-global and come at differrent spatio-temporal resolutions. That said, means that the choice of your product is strongly related to the resolution required for the scale of application. My experience based on our findings is that you cannot clearly point to the "best satellite product" (satellite-rainfall over complex terrain is still a big issue.....). For example, 3B42 is associated with smaller bias (relative to CMORPH and PERSIANN) but PERSIANN has given me higher correlation (note that reference has been gauge-adjusted radar estimates).

We are currently working on a long-term comparison of different products over Alto Adige, so we can exchange more info if you like.

Yes, of course I would be happy to exchange more info on that.

Try the Global Precipitation Climatology Project (GPCP) and the Climate Prediction Center merged analysis of precipitation (CMAP)

Thanks Richard for the information.

Actually, I have several hydrological applications in mind. For some of them, daily or 5-day cumulated rainfall data is enough, for others I would need sub-daily observations (as from TRMM).

I will work on that to see which satellite rainfall dataset might be more suitable.

BTW, at EGU 2013 I presented a poster (also available via RG) with a first application with TRMM data:

http://presentations.copernicus.org/EGU2013-4466_presentation.pptx

You are totally right, at saturation we can't say nothing more about rainfall. Indeed, the underestimation during high soil moisture conditions is clearly visible from the timeseries figures in the poster.

We could use also runoff data in these conditions... it is work in progress (actually, just started) :-)

I did a research on various products (TRMM3B42 and cmorph) in the amazonian basins in comparison to insitu data. It´s hard to judge the accuracy of the insitu data but it gives you an idea. I have a code in the appendix (matlab) for a way how to process the data, so if you are still interested let me know :)

Best

Jacob

IFU ETHZ/ IGP Peru

Hi Jacob,

yes we are working on satellite rainfall data for several hydrological applications.

I'm interested to the Matlab code for processing the data. Can you share with me?

Thanking you in advance,

L

BTW, I share with whom could be interested our studies for estimating rainfall by inverting soil moisture:

1) https://www.researchgate.net/publication/259755234_Comparison_of_different_satellite_rainfall_products_over_the_Italian_territory?ev=prf_pub

2) https://www.researchgate.net/publication/259266724_Hydrological_validation_of_satellite_rainfall_products_in_central_Italy?ev=prf_pub

and here is the code:

https://www.researchgate.net/publication/260843097_SM2RAIN_(Matlab_code_-_updated)?ev=prf_pub

Conference Paper Comparison of Different Satellite Rainfall Products Over the...

Data Hydrological validation of satellite rainfall products in ce...

Data SM2RAIN (Matlab code - updated)

Hello Jacob,

I would also like to have the Matlab code for processing the data. Can you share with me?

Hi Diana, I wrote you a PM. in My report is also described where and how to get the data. Hope I can help you,

greetings Jacob

@Jacob You are doing a great job, thanks

Here the paper where we developed the global scale rainfall datasets from soil moisture data: https://www.researchgate.net/publication/261596843_Soil_as_a_natural_raingauge_estimating_global_rainfall_from_satellite_soil_moisture_data?ev=prf_pub

... and the datasets can be freely downloaded here: http://hydrology.irpi.cnr.it/repository/public/files/sm2rain-global-rainfall-datasets/view

Article Soil as a natural rain gauge: Estimating global rainfall fro...

Hello everyone.

I am Putri and I am new in this subject.

I have one question and one request.

Q: Bin Wu said that in tropical areas, TRMM is more accurate. How about CMORPH? Which one is better in tropical areas? FYI, I live in Indonesia

And may I get the MATLAB code for processing the data Jacob had. Can you share with me?

Thank you a lot before

Thanks all 

Some studies shows CMORPH shows better agreement and some prefer TRMM. I personally think TRMM shows better agreement with observed data, particularly for extreme precipitation events. Note: I have made comparison over complex topography.

TRMM: Tropical Rainfall Mapping Mission is commonly used for rainfall data:

http://disc2.nascom.nasa.gov/Giovanni/tovas/TRMM_V6.3B42.2.shtml

TMPA (TRMM+GPM) SERIES

- National Oceanographic Data Center (NOAA )

- Tropical Rainfall Mapping Mission (TRMM)

- Climate Hazards group Infrared Precipitation with Stations (CHIRPS)

MSWEP？

It depends on the scale and rainfall variability of the study area. Normally SREs with high spatio-temporal that combine TIR and PMW sensors could better represent rainfall variability particularly at fine temporal resolution (eg. Daily). However, even satellite rainfall with relatively high spatio-temporal resolution are less effective to capture rainfall variability at daily time scale. Hence, satellite rainfall products have to be validated at specific study area as their performance may depend on influencing factors of that region; moreover, a bias correction should be applied before their application to any hydrological studies.

TRMM Tropical Rainfall Mapping Mission which is extended by NASA.

TRMM

@ Richard Gloaguen the downscaled data should also be validated with the in-situ data?

can anyone recommend a paper on comparison of various satellite products overe HKH region?

TRMM is a better choice. You can get some more information here:

https://pmm.nasa.gov/data-access/downloads/trmm

https://pmm.nasa.gov/sites/default/files/document_files/TMPA-to-IMERG_transition_0.pdf

Summera Khan

For comparisons among different products, you can learn something here:

Article Evaluation of satellite precipitation retrievals and their p...

also

Article Precipitation pattern in the Western Himalayas revealed by f...

and

Article A Review of Merged High Resolution Satellite Precipitation P...

For local calibration of precipitation in UIB (HKH), you can look into this paper:

Article Revealing Vertical Distribution of Precipitation in the Glac...

You can try to look into the Tropical Rainfall Measurement Mission (TRMM) which is a high temporal and spatial resolution satellite rainfall product with 3 hr resolution up to daily. The Tropical Rainfall Measuring Mission (TRMM), is the first mission dedicated to measuring tropical and subtropical rainfall through microwave and visible infrared sensors, and includes the first spaceborne rain radar. Tropical rainfall comprises more than two-thirds of global rainfall.

More info, please refer to:

https://climatedataguide.ucar.edu/climate-data/trmm-tropical-rainfall-measuring-mission

https://global.jaxa.jp/projects/sat/trmm/

https://gpm.nasa.gov/data-access/downloads/trmm

is best

and get some data this link

https://power.larc.nasa.gov/data-access-viewer/

http://power.larc.nasa.gov/cgi-bin/cgiwrap/solar/agro.cgi

see to this website

https://gpm.nasa.gov/data-access/downloads/trmm

In rainfall analysis research, determining the most suitable satellite rainfall products for a particular area/region depends on the validation process being carried out with the available in-situ data.

Many researchers prefer the TRMM data , because it is sourced from the satellite and had also cross-validated with some gauge stations.

Check these websites

https://gpm.nasa.gov/data-access/downloads/trmm

How to convert the daily data of TRMM into excel