What’s next?

Category : Data, Satellite

Dear reader of this blog.

As you are well aware SMOS and SMAP (and Aquarius for that matter) are delivering excellent data, demonstrating every day the usefulness and uniqueness of L Band data for monitoring certain facets of our planet. Moreover, many operational or pre-operational applications are emerging. The sad thing is that our dear satellites are like us, they don’t get younger with time. … and no follow on L Band radiometers are currently decided. We are thus facing a severe data gap if a follow-on is not very soon set up.

Actually the situation is getting somewhat critical and i am convinced we should get moving quite soon on this critical issue.

I thought that we could use this forum to highlight the areas the expression of needs for L band radiometry. If you have interesting elements let me know!

In the mean time see 6 years of global soil moisture as prepared by Ali Mahmoodi with 6 years of  SMOS data.anim-sm-6y

Monthly evolution of soil moisture for teh first 6 years of SMOS (2010-2015)

2015 Aquarius / SAC-D / Ocean Salinity Science Team (OSST) Meeting

Category : Ocean, Satellite

2015 Aquarius / SAC-D / Ocean Salinity Science Team (OSST) Meeting

10th Aquarius / SAC-D Joint Science Team Meeting

17-19 November 2015
Buenos Aires, Argentina

Friends and Colleagues, Estimados amigos y colegas,

Please mark your calendars:

In the wake of the loss of Aquarius/SAC-D in early June, the Principal Investigators and Program Scientists have decided to proceed with convening an Aquarius/SAC-D science meeting Buenos Aires, 17-19 November 2015 (Tues, Weds, Thurs).   Our objectives for the science team meeting are to review the many ongoing and concluding Aquarius and SAC-D science projects and to survey the development of ocean research in the South Atlantic in terms of observing systems, models, products, and services.   The agenda will allot approximately one day each to SAC-D, Aquarius and South Atlantic studies.

A call for abstracts will be circulated next week.

The general announcement is available at


Click “General Information” to download a fact sheet on venue, travel and lodging.

Best regards to all, Un cálido saludo para todos,

Gary Lagerloef and Sandra Torrusio

Aquarius and SAC-D Principal Investigators

Sad news

Category : Data, Ocean, Satellite

Most unfortunately the SAC-D mission has now ended operations:

It is really sad to see the end of this very captivating mission and realise that we will not have access to any more Aquarius data.

Congratulations to Gary and the whole the team for all the  magnificent science results obtained during these fascinating 4 years or so…

New RFI Maps from Aquarius

Category : Data, L1

The Aquarius mission is also trying to identify and Flag RFIs.

Paolo de Matthaeis is producing monthly RFI maps for BOTH the active and passive L band systems on board Aquarius they can be seen here for the radiometer and here for the scatterometer.

It is interesting to compare them to the SMOS ones even though they are not established exactly in the same way (but we are working on it!) We see for instance that over land the number of RFI is higher for Aquarius, probably due to a larger bandwidth (TBC) collecting more out of band (OoB) emissions.

Comparing these RFI maps is not really possible quantitatively as they do not show the same features , but we can never the less see the high correlations between the two radiometer estimates as well as the non negligible impact on active measurements.

For more details go here for Aquarius and there for SMOS


Aquarius Radiometer RFI for June 2013

scatterometer_RFI_June_2013Aquarius Scatterometer RFI for June 2013


SMOS probability of RFI for 15 Days in June 2013 – Ascending orbits only

Finally we are also producing maps of emitter characterization at any given time, giving their apparent strength in K, the number of time they were observed and their location (1-7 km accuracy). An example is shown below.

SMOS-RFI_info_20130610SMOS RFI Characterisation for 15 days in June 2013

All this new stuff will be posted on the blog soon… Stay tuned

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