A Facility for Producing Consistent Remotely Sensed Biophysical Data Products of Australia
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1 TERRESTRIAL ECOSYSTEM RESEARCH NETWORK - AusCover - A Facility for Producing Consistent Remotely Sensed Biophysical Data Products of Australia June, 2011 Mervyn Lynch Professor of Remote Sensing Curtin University Leader of the Perth AusCover Node m.lynch@curtin.edu.au 1
2 The Scope of AusCover Outline of Presentation Moderate to Low Resolution Remote Sensing Data Sets Delivered via Portal Field Data Collection Program NIST referenced optical calibration lab at Curtin Validation of Products /attach uncertainty High Spatial Resolution Remote Sensing Products via the Portal 2
3 AusCover Scope AusCover remote sensing data archive and access capability (DAAC) launched in the first half of 2010 One of several TERN facilities Current funding till mid-2014 [incl EIF funding] Delivery of consistent national time-series of remotely sensed biophysical parameters To support ecosystem research and natural resource management communities in Australia LANDSAT, MODIS, AVHRR among others Consistently formatted and detailed metadata Publically accessible and retrievable through the online AusCover data portal 3
4 AusCover Portal eg for NDVI 4
5 Moderate-Low Resolution Data Sets Delivered by AusCover Products Ecosystem dynamics Land Cover Green Land Cover Leaf Area Index FPAR Foliage Projected Cover Ground cover fraction Forest cover National ecosystems map Water bodies Vegetation height Land cover moisture Above ground Vegetation Biomass Additional Products Fire National MODIS mosaics Atmospheric products Climatologic products Site focussed 5
6 Metadata Considered equally important to image data AVHRR NDVI Normalised Difference Vegetation Index (NDVI) derived from AVHRR Vegetation greenness time series Synopsis NDVI is an index of the amount and greenness of live green vegetation. AVHRR NDVI gives a long time series overview of the dynamics of vegetation. Spatial resolution: 0.01, 0.05 Spatial coverage: Australia, land only Temporal resolution: 3 per month, monthly Temporal coverage: April 1992 present Custodian: Bureau of Meteorology Sensor & platform: AVHRR on NOAA-11 to -18 Algorithm date: 2008 Production date: 2008, then near real time Use limitation: Some licence description Algorithm: Data up to June 2008 is stitched passes from CSIRO. Subsequent data is unstitched near real time passes from Bureau of Meteorology. CAPS navigation, cloud masking, regridding. Calibration drift detrended and locked to NOAA-14 by invariant semi-arid IBRA regions. No atmospheric or angular corrections. Compositing by maximum value NDVI. Datasets AVHRR NDVI, 0.01, 3 per Month: Available September 2011 AVHRR NDVI, 0.05, 3 per Month: Available September 2011 AVHRR NDVI, 0.01, Monthly: AVHRR NDVI, 0.05 Monthly: Overview The Normalised Difference Vegetation Index (NDVI) grids and maps are derived from satellite data. The data provides an overview of the status and dynamics of vegetation across Australia, providing a measure the amount of live green vegetation. The satellite data comes from the Advanced Very High Resolution Radiometer (AVHRR) instruments on board the National 6
7 Linking Data Sets Scaling Up High-Resolution, Field-based Measurements Medium/Low-Resolution, Space-based Measurements Canopy Lidar Point-Clouds Continental Dynamics in Green Cover 7
8 Field Photos - Tumbarumba 8
9 Hemispherical Photography 9
10 Spectroradiometric Measurements Reflectance Wavelength (nm) Leaf 1 Leaf 2 Leaf 3 Leaf 4 Leaf 5 10
11 Leaf Samples and Their Properties 11
12 Basic Structural Measurements 12
13 Foliage Projective Cover & Fractional Ground Cover 13
14 AusPlots LAI Eg LAI2200 instrument t 14
15 Validation Dominant biomes Homogenous 5 x 5 km sites (CEOS Bigfoot) Flux tower TLS FPC / Structure Hemi / LAI
16 WorldView-2 WorldView 2 - Tumbarumba 16
17 WorldView-2 - Tumbarumba 17
18 Hymap - Tumbarumba 18
19 CW LIDAR - Tumbarumba 19
20 AusCover MODIS Cloud Products MODIS Cloud Mask Cloud Detection MODISCloud Top Properties Bulk Cloud Properties MODISCloud Optical Properties Cloud Microphysics Applications: Hydrodynamic cycle thin cloud detection and screening
21 AusCover MODIS Atmosphere Products MODIS Atmospheric Profiles Vertical Temperature Vertical Water Vapor MODIS Water Vapor Precipitable Water Vapor Applications: Hydrodynamic cycle Model assimilation Atmospheric Dynamics
22 AusCover MODIS Surface Products MODIS Daily Dil Land dsurface Temperature MODIS Atmospheric and BRDF Corrected Reflectance Optimized for Australian land surface conditions Numerous applications VIIRS extension
23 Status of RS Data Delivery by Perth AusCover Node # of Products Coding of Status of Products Shipping to Data Fabric / AusCover Server In production / testing for shipping Tested for production Under development Preliminary Total = 89 products of which 57 [64%] currently are being delivered and another 19 products [21%] close to delivery which will bring the tally to 85%.
24 LIDAR DEM, DTM Canopy height Foliage Projective Cover Vertical Profiles Tree density LAI Hyper-Spectral data Proposed High Resolution Data Products At-Surface Reflectance Leaf / Canopy properties: N, H 2 O, chlorophyll content Unmixing: i Photsynthetic th ti vegetation ti NV, NPV and bare ground WorldView-2 Imagery Land cover / Structural category classification Visual image interpretation for cal/val airborne data products 24
25 Product Deliveries via Portal LIDAR data: Las format, ascii All derived products Metadata, including processing steps and validation results Hyperspectral data: Reflectance All derived products Metadata, including processing steps and validation results WorldView-2 data: All derived products Metadata, including processing steps and validation results 25
26 Engaging g g with End Users AusCover User Reference Group Ensuring use of final products Ensuring suitable data formats Ensuring suitable accuracies are achieved Involving state and federal government agencies and NGO s Building on existing approaches Integrating existing field and image data International remote sensing community 26
27 Future Outlooks Focus areas suitable for long-term ecosystem monitoring Consistent data sets Consistent processing Consistent validation Consistent products and metadata t All data available via online portal 27
28 Products Ecosystem dynamics Land Cover (DLCM) Time series Green Land Cover Leaf Area Index Time series FPAR Foliage Projected Cover (FPC, Landsat) Ground cover fraction Forest cover (>20%) Sparse forest cover (<20%) National ecosystems map Water bodies Vegetation height Land cover moisture Ancillary Solar radiation/par Rainfall Air temperature Humidity Wind run NWP wind Albedo Soil moisture (Satellite?, Modelled) Continental shape files AWAP outputs Soil Moisture (Upper, Lower) Total Evaporation Aboveground Vegetation Biomass Cover Dynamics Transpiration Fire, LST Soil Evaporation Burnt area Potential Evaporation Fire frequency Local Discharge Fire radiative energy Surface Runoff Grassland curing LST National MODIS mosaics MOD09 Surface Reflectance M*D11 MD11 LST and emissivity MCD12 Land cover type & dynamics MOD13 Vegetation Indices (NDVI, EVI) MOD14 Thermal anomalies / Fire MOD15 LAI and fpar MOD17 Gross Primary Productivity MCD43 BRDF and Albedo (NBAR) MOD44 Vegetation Continuous Fields MCD45 Burned area Inputs to satellite processing Mean sea level pressure (NWP) Total column water vapour (NWP) Total column ozone Aerosol optical depth Deep Drainage Sensible Heat Latent Heat Base satellite Land surface reflectance (Landsat, MODIS, AVHRR) Brightness temperatures (AVHRR, GEO) AVHRR (stitched passes, composites, PAL) ATSR1,2/AATSR/MERIS Hyperion Site focused Land surface reflectance (100+ bands, air/in-situ) Lidar (air, ground) MODIS atmosphere Cloud top properties Cloud optical properties Aerosol, smoke, dust Atmospheric profiles Column water vapour
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