Activities of the international soil moisture working group
Download
1 / 23

Activities of the International Soil Moisture Working Group - PowerPoint PPT Presentation

Activities of the International Soil Moisture Working Group Peter J. van Oevelen International GEWEX Project Office GEWEX@GEWEX.ORG Framework International Soil Moisture Working Group GEWEX CEOP Hydrological Applications Project GRP LandFlux Space Agencies ESA NASA JAXA

Related searches for Activities of the International Soil Moisture Working Group

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

Activities of the International Soil Moisture Working Group

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Activities of the international soil moisture working group l.jpg

Activities of the International Soil Moisture Working Group

Peter J. van Oevelen

International GEWEX Project Office

GEWEX@GEWEX.ORG


Framework l.jpg

Framework

  • International Soil Moisture Working Group

  • GEWEX

    • CEOP

      • Hydrological Applications Project

    • GRP

      • LandFlux

  • Space Agencies

    • ESA

    • NASA

    • JAXA


Rationale for in situ network l.jpg

Rationale for in-situ network

  • There is no current global network

  • Soil Moisture is regarded as (emerging) key variable by GCOS and considered to be important in land surface feed backs

  • Temporal change is as or even more important than spatial representation

  • Modelling implementation and Data Assimilation

  • Earth Observation Validation/calibration

  • EO does not give profile information (exception multi-band SAR)

  • Increased Process Understanding

  • Needed for Hydrological Applications


International soil moisture working group l.jpg

International Soil Moisture Working Group

  • 2005: Started under the IGOS-P IGWCO (Integrated Global Observing Strategy – Partnership /Integrated Global Water Cycle Observations theme)

  • March 2006: First Workshop/Meeting, The Netherlands

  • November 2007: Second Workshop/Meeting, China


Original ismwg objectives l.jpg

Original ISMWG Objectives

  • To support international cooperation in research and applications in support of soil moisture satellite missions;

  • To support the development of an in-situ global soil moisture network;

  • To protect satellite missions dealing with soil moisture observations.


Participation and needs l.jpg

Participation and Needs

  • Global participation: identify key people and organizations worldwide;

  • Leadership from established programs (in-situ and satellite);

  • Definition of achievable goals (in-situ networks, satellite products);

  • Identify resources to enhance in-situ expansion and contributions to satellite/model validation.


Ismwg commitments l.jpg

ISMWG Commitments

  • Commits to a global network of in-situ soil moisture measurements

    • Lead international agency: GEWEX

    • Workshops (Bring together key people, establish goals, current activities, standards)

      • Noordwijk, ESTEC March 2006: Done

      • Beijing, IAP, November 2007: Done

    • Resources for enhancing unrepresented regions:

      • Key area unresolved

    • Data archival and distribution:

      • Current Lead: Portuguese Institute of Meteorology


Ismwg commitments ii l.jpg

ISMWG Commitments II

  • Commits to developing a quasi-operational soil moisture data product

    • Quality and relevance of current products: tbd

    • International support for planned dedicated missions may require commitment by missions to provide a timely product: GEO


Second ismwg workshop l.jpg

Second ISMWG Workshop

  • Held on November 14 and 15, 2007 at LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China

  • 22 Registered Participants and 15 Students and Post-Docs

  • ~20 Presentations


Why this workshop in 2007 l.jpg

Why this workshop in 2007?

  • Build upon First Workshop and increase coordination

  • Review individual activities

  • Identify best practices

  • Set goals for observing system integration

  • Role of in-situ in satellite product validation-specific design standards

  • How do we affect changes to existing protocols, expand (especially developing regions of the world), affiliate with a group with $$?

  • Identify the next steps

  • Report….GEWEX News?

  • Initiate Set-up of the Data Hosting Center


In situ measurement protocol l.jpg

In-Situ Measurement Protocol

  • Uniformity

  • Representative

  • Consistency

  • (Cross-)Calibration/Validation

    • Site specific calibration: absolutely

    • Temperature: pref. At each depth and for each sensor

    • Soil Texture & Bulkdensity: needed

  • Relationship with gravimetric soil moisture is standard

  • Careful automation

  • Quality Assurance


In situ measurement protocol 2 l.jpg

In-Situ Measurement Protocol (2)

  • Density/depth/number of sensors

    • 5, 20 and 50 cm below surface

  • Units of representation

    • Volumetric or fractional between 0 and 1

  • Soil Moisture Definition

  • Soil texture description & soil hydraulic properties

    • Which metadata?


Network design l.jpg

Network Design

  • Density

  • Continuity

  • Data delivery/in-take, distribution & archiving (see next)

  • Metadata (see next)

  • Capacity Building

    • Training

    • Involvement LDC's

  • Linking Existing Networks (see next)


Data hosting l.jpg

Data Hosting

  • Data delivery/in-take, distribution & archiving

  • Metadata

  • Linking Existing Networks

  • ESA to support data hosting activity within framework of SMOS Cal/Val activities


Ismwg meeting 2007 l.jpg

ISMWG Meeting 2007

  • As with the first meeting Spirit was very cooperative!

  • Openness and willingness to different views and opinions

  • Deemed very useful and worth keeping the momentum


Topics for consideration l.jpg

Topics for Consideration

  • How to stimulate contribution of data to data hosting center?

    • Rationale, all the reasons there are to not sit on your data but share…

  • How and who will get access to what?

  • A team is needed to start looking at instruments (intercomparison etc.)

  • Support for data hosting continuation (SMOS and beyond)

  • What else do we NEED to do?


Past critical issues l.jpg

Past Critical Issues

  • Data from outside of North-America and Europe

  • Loss of momentum with delay of SMOS launch

  • Separation of communities (both US vs Europe as well as agricultural vs hydrological)

  • Links to GEO and GEOSS (currently one of the water subtasks)


Ismwg future l.jpg

ISMWG Future

  • The Proposed New Structure and Embedding within GEWEX

  • The embedding of the ISMWG in the GEWEX Radiation Panel (GRP) requires a few changes in the so far loose structure. Proposed is a three tier system which is guided by a board consisting of the (co-)chairs of each of the tiers plus ex-officio members.

  • Consistent with other GRP activities


Tier 1 validation l.jpg

Tier 1: Validation:

  • Development of Global In-Situ Soil Moisture network and data sets to support validation of satellite soil moisture retrieval and assimilation

    • Data Hosting, Measurement Protocols

  • Validation of Satellite Soil Moisture Products and Soil Moisture Intercomparison Projects

    • Links all three tiers


Tier 2 assimilation l.jpg

Tier 2: Assimilation

  • The assimilation of soil moisture and satellite data (both active and passive ) into numerical weather prediction and hydrological modeling for both forecasting as well as process studies.

    • Important to show usefulness

    • Expand to yield forecasting


Tier 3 product fusion and merging l.jpg

Tier 3: Product fusion and merging

  • Development of long term consistent global soil moisture products (and their derivatives)

    • Combining various sources of data (PM, AM, In-Situ)

    • Climate/Trend research robust


Key activities 2009 l.jpg

Key Activities 2009

  • ISMWG Custodian Soil Moisture Network in GTN-H

  • Workshops: Next (3rd)Workshop, Lisboa, Portugal (March 10, 11 2009)

  • Website: http://gewex.org/ismwg_3rdmeeting.html

  • Data Hosting Center kick-off

  • Link/interact/alignment with other relevant activities such as by NOAA


Slide23 l.jpg

Thank You


ad
  • Login