Land Discipline Report Back

Chris Justice

Current Issues and Priorities• Broadening MODLAND in the framework of the

focus area measurement teams and land data processing following the Ocean Color Model – Recognizing important land building blocks e.g. Val LPV, QA LDOPE, Land

Rapid Response, LADS, ORNL Subsets, DAAC Data Pool, VIIRS LAND PEATE, REASONS e.g. Land LDTR, GLCF, LEDAPS, TRFIC

• Collection 5 Testing (highest priority)– Greater emphasis on product testing prior to production– Development of the LADS (data distribution) of Test Data – land equivalent

of the Atmospheres (AADS)

• Validation – Continuing Stage 2 validation– Where possible engaging users in the process of validation– LPV WG gathering momentum – transition to IGOS/GEOSS

Current Issues Cont’d• New Recompeted Land Products

– SCF Product Demonstration / Proof of Concept underway

• Continued Community Outreach – Publication of Results– Need to keep User Guides and Web Sites Current– Handle NSFAQ and requests as best we can

• Recognize ramping down of MODIS SDST and MCST– Decreasing staffing / broadening responsibilities

• Distribution and Archive – Continued growth in users and distribution from

the DAACs (EDC,NSIDC)

• Hard to keep track of all the new developments in the use of MODIS land products

• MODIS Land Direct Broadcast – Real demand for information, code, advice– Need to build a self help community – lateral tech

transfer– Prepare for NPP VIIRS – Land DB Workshop proposed – timing ?

• Broader community DB meeting planned - Italy Oct ’05• Continue to integrate Land Products into NASA

Applications • Need to raise the Community Voice

– Strong Advocacy for NASA Earth Science– Terra extension – The Landsat Continuity issue – International Cooperation e.g. GOFC/GOLD, IGOL,

CEOS LPV

MODIS Distribution at NSIDC: Volume

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50.00

100.00

150.00

200.00

250.00

300.00

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4/1/20007/1/200010/1/20001/1/20014/1/20017/1/200110/1/20011/1/20024/1/20027/1/200210/1/20021/1/20034/1/20037/1/200310/1/20031/1/20044/1/20047/1/200410/1/20041/1/2005

Month

# Gigabytes

MYD29P1N

MYD29P1D

MYD29E1D

MYD29

MYD10C2

MYD10C1

MYD10A2

MYD10A1

MYD10_L2

MOD29P1N

MOD29P1D

MOD29E1D

MOD29

MOD10C2

MOD10C1

MOD10A2

MOD10A1

MOD10_L2

MODIS Distribution from the LP DAAC: Volume

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Jun-00Aug-00Oct-00Dec-00Feb-01Apr-01Jun-01Aug-01Oct-01Dec-01Feb-02Apr-02Jun-02Aug-02Oct-02Dec-02Feb-03Apr-03Jun-03Aug-03Oct-03Dec-03Feb-04Apr-04Jun-04Aug-04Oct-04Dec-04Feb-05

Monthly Distribution June '00 - Feb '05

Volume (TB)

Snow Accumulation/Depletion Curves above 2500m for the Basin Outlined in Red

Snow-Cover Depletion Curves are Developed using MODIS 8-day Snow Maps (MOD10A2) for the Famine Early Warning System in Afghanistan to provide an

indication of amount of seasonal snow cover for irrigation

Courtesy Michael Budde/USGS

Land bands are used for coastal water biophysical parameters retrieval

Figure 9c. TSS distribution on September 19th 2003 shortly after Hurricane Isabel landfall (From Matarrese et al. in press).

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45

0 0.02 0.04 0.06 0.08 0.1

y = 4.3137 + 484.58x R= 0.98774

Total Suspended Solid [mg/l]

water reflectance at 650nm

Figure 9b: Total suspended solids vs Surface reflectance at 650nm (for day 105 and 232 of 2003).

Vermote et al.

V005 500m White-Sky AlbedoV005 500m White-Sky Albedo

Schaaf et al. Schaaf et al.

500m 1km

2001193

New Refinements in the V5 Daily MODIS LST PGE Code (PGE16)

Zhengming Wan, ICESS, University of California, Santa Barbara, CA

•Incorporating split window method in the day night algorithm•Comparing emmissivity with land cover and VI

(d) (e) (f)

E LC VI

NDVI based parameters

NDVI Green-Up Rate

NDVI Dry-Down Rate

NDVI-Based LOS

Huete, Didan et al.

•Identified new dynamics in the dry season activity in the tropics in all FPAR, LAI, GPP/NPP and EVI/NDVI products

Nemani, Huete et al.

Dry vs Wet season changes in MODIS Leaf Area Index based on 2000-2004 monthly composites

Wenze/Myneni/Nemani BU/ARC

Year NPP Trop. NPP CO2 growth rate (Gt/y) (Gt/y) (ppm/y)2000 56.06 32.88 1.172001 57.74 33.21 1.562002 55.53 31.97 2.042003 54.80 31.25 2.54

Zhao/Running/Nemani

Global Net Primary Production (MOD17) Anomalies 2000-2003

2000 2001

20032002

El Nino

Terra Mean Fire Radiative Power

Giglio et al.

Land Rapid Response Continuesto give high visibility to applications community

Earth Observatory Story - Fires on Hispaniola Smoke pours from fires burning in the Dominican Republic in this Moderate Resolution Imaging Spectroradiometer (MODIS) image, taken on March 18, 2005, by

NASA’s Aqua satellite.

Land Measurements Team – Earth System Data RecordsSummary of Discussions

• Earth System Data Records (ESDRs) are observations of a parameter of the Earth system optimized to meet requirements to address Earth science questions and to provide for applications.

• Designation of initial ESDRs/CDRs.– Priority derived from the importance of end uses.– Requirements are derived from end-user needs.

o Science questions, applications, decision support

– Engage relevant agencies, e.g., NASA, NOAA, USGS, USDA.

– Compatible with other frameworks, e.g., GTOS, GCOS. – Consistent with records managed by other measurement

teams.– Linked to historical measurements for continuity.

Land ESDR/CDR White Papers

• Describe a candidate ESDR/CDR• 1 – 5 pages, submitted during summer 2005• Scientific rationale and importance, expected end uses,

implied requirements– Temporal and spatial resolutions, accuracy, precision

• Approach– Algorithms, processing/reprocessing,

calibration/validation, product dependencies– Supporting activities, tasks– Feasibility, reliability, algorithm maturity, heritage– Relationships to other products

• Initial Topics– Reflectances, surface temperature, Land cover, snow

cover, albedo, vegetation indices, LAI/fAPAR, primary productivity, fire

– Liaison to surface hydrology ESDRs/CDRs

General Considerations• Low level and high level products are involved in ESDR’s

– Higher level products depend on products such as reflectance and vegetation index.

– Hierarchical organization is useful– White papers would be structured accordingly in terms of

requirements• Explicit attention to error, uncertainty, and precision is required in

definition and production.• Issue of consistency between land sub-groups and ESDR’s –

important for the modeling community• Need to not only define the ESDR but make the case as to why its

critical to the program• Need to consider what will be needed to create the retrospective

data record • Grouping by modeling objectives is desirable

Next Steps

• Pay attention to the bigger picture e.g. Terra extension, Landsat, GEOSS, Earth Science at NASA

• Look for ways to do things better, faster, cheaper– Utilize the resources we have to the greatest effect– Some mid course correction may be needed

• Gather momentum on Land Measurement Team and CARS – specify the needs, variables and rationale ASAP – coordinate with other agencies

• Develop schedule for New Product ATBD reviews• Look for opportunities to support HQ initiatives e.g.

NACP, GEO