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Cyclone Oswald over Australia monitored by SMOS

18 février 2013

In January 2013, ex-Tropical Cyclone Oswald passed trough parts of Queensland and New South Wales, Australia, causing widespread turmoil including storms, at least six tornadoes over south-eastern Queensland, and severe flooding in many areas within 200km of the coast. Coastal regions of Queensland were the most impacted with Mundubbera, Eidsvold, Gayndah and Bundaberg in the Wide Bay-Burnett hit severely.

For more information about this event: http://en.wikipedia.org/wiki/2013_Eastern_Australia_floods


The Australian Bureau of Meteorology recorded the amount of precipitations (as shown in the following figure), which is the cumulative precipitation between the 23rd and the 29th of January.

Rainfall over Australia at the end of January

At the CATDS, the 10-day product covering the end of January shows a large difference in soil moisture during this period. In the figure below, the left plot shows the minimum value of soil moisture recorded between the 21st and the 31st of January, and the right plot shows the maximum value of soil moisture over the same period.

Minimum and maximum values of Soil Moisture in Australie at the end of January 2013

The Weather Bureau said that the flooding could have been worse if the region wasn’t so dry before the rain started. The CATDS saw both conditions: a dry spell in the middle of January, and a significant increase in soil moisture after the cyclone.

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SMOS TRAINING SESSION UPDATE

5 août 2012

Dear Colleagues

As promised some news on the training workshop!

First of all we received many applications – still counting -  and we will have a difficult task selecting the happy few!

This will be done end of August with announcements beginning of September.

In the mean time here is the draft programme.

SMOS TRAINING SESSION
Toulouse, 5 – 9 November 2012

PROGRAMME

————————————————– Nov 5 ————————————————-

INTRODUCTION

AFTERNOON:

-    Welcome and overview over weekly programme
-    Distribution of material, allocation of computers, passwords, etc.
-    SMOS mission overview

————————————————– Nov 6 ————————————————-

FROM SATELLITE TO BRIGHTNESS TEMPERATURES

MORNING:

-    Mission characteristics
-    Data access and selection of products
-    Brightness temperature reconstruction, calibration, corrections

AFTERNOON:

-    Visualization of the SWATH based XY Brightness temperature products
- visualizing product content using Beam (and SMOSVIEW TBC)
- what we know about RFI
-    HV Brightness temperature products
- from swath based products XY2HV
- angle binned brightness temperatures products
-    Analyzing product content with scripts
- from specs (INDRA ESAC) to reader using Python
- SMOS and modeled brightness temperature comparisons, SMOS angular signature over water, etc. using Matlab

————————————————– Nov 7 ————————————————-

FROM BRIGHTNESS TEMPERATURE TO GEOPHYSICAL PRODUCTS

PARALLEL SESSION 1: LAND PRODUCTS

MORNING:

-    The soil moisture retrieval algorithm
-    Soil moisture products visualization/content
-    Reading and analyzing data – RWAPI Matlab

AFTERNOON:

-    Running the soil moisture retrieval processor on custom data

PARALLEL SESSION 2: OCEAN SALINITY

-    The SSS retrieval algorithms
- In the ESA Operational chain
- In the CATDS Research Center chain (TBC)
-    The along swath (level 2) SSS product
- Definition of flags
- Impact of flags
- Calibration-validation using in situ SSS
- Reading, visualization under Matlab and Python

————————————————– Nov 8 ————————————————-

TEMPORAL SYNTHESIS PRODUCTS

PARALLEL SESSION 1 : LAND PRODUCTS

MORNING:

-    Multi-orbit soil moisture retrievals with SMOS – algorithm description
-    3 days, 10 days , monthly temporal synthesis products
-    Interactive visualization of the products using Panoply

AFTERNOON:

-    Reading and analyzing the CATDS Products
- Reading and analyzing NetCDF products
- Fast analyses using NCO

PARALLEL SESSION 2: OCEAN SALINITY

-    CATDS Research Center SSS maps (sortings based on yearly data set TBC)
-    Combination of multi-orbit SSS retrieved from SMOS ESA processor, importance of quality indicators

————————————————– Nov 9 ————————————————-

APPLICATIONS USING SMOS DATA

MORNING:

-    Overview of applications using SMOS products: data disaggregation, assimilation, root zone soil moisture, impact of rain on salinity stratification, tracking hurricanes, snow/ice
-    Feedback from CAL/VAL teams – an open round table

WRAP-UP

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***NEW*** CATDS Level 3 Brightness Temperature products are available

6 juin 2012

→ The Level 3 Brightness Temperature product is a daily global polarised brightness temperature product, arranged by incidence angle values, in full polarisation at the surface.

It includes all brightness temperatures, which were acquired that day, transformed to ground polarisation reference frame (H and V polarisation, Stockes 3 and 4), binned and averaged into fixed angle classes (from 2,5° to 62,5° by step of 5°).

These products are available for the whole SMOS operation period (from January 2010 until now). For more information about how to get these products, see this article.

_____________________________________________________________

L3TB

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CATDS Level 3 Soil Moisture and Brightness Temperature data are available!

29 mai 2012

As you were all expecting it, the Level 3 SM&TB reprocessed data are now available covering the whole SMOS operation period (from January 2010).

  • Where to find the products?

It is very easy, you just need to go to the catds website to find all the information you need. You will be redirected to the ftp server. The data are on different directories:
- RE01 for reprocessed data from 2010 and 2011,
- OPER for operationnal data from 2012.

CATDS

An authorization is required to have access to the ftp server. You simply have to send an email to support@catds.fr to get a personal access.

  • Where to find information about the products?

You can find a document describing all the products on the « Docs » tab (or directly here).

  • How to read the products?

The Level 3 SM products are in the netcdf format. You can read them using a software like Panoply, or with matlab (see some example of programs on the « Tools » tab, paragraph « Fonction to read CATDS products »).

Monthly averaged products (ascending orbits)
Monthly averaged products (ascending orbits)

If you have any questions/remarks, feel free to send an email to yann.kerr@cesbio.cnes.fr.

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