# Presentation: 713141

## MODIS STATUS OVERVIEW

**by **
**Vincent V. Salomonson**
**MODIS Science Team Leader**
**and**
**Jack Xiong**
**MODIS Project Scientist**
**VIIRS/MODIS Science Teams Meeting**
**Hilton BWI Airport**
**May 14, 2008**

## Terra Launch: Dec. 18, 1999

**Terra Launch: Dec. 18, 1999**
**First Image: Feb. 24, 2000**
**(over  8+ years of operation as of April 2008)**

**Aqua Launch: May 04, 2002**
**First Image: June 26, 2002**
**(~ 6 years of successful operations)**

**MODIS IS ON THE EOS TERRA AND AQUA MISSIONS**

## Terra Instrument and FPA Temperatures

**Terra Instrument and FPA Temperatures**

**~3K increase over 8 years **

**~3K increase over 8 years **

## Aqua Instrument and FPA Temperatures

**Aqua Instrument and FPA Temperatures**

**~1.5K increase over 6 years **

**~1.5K increase over 6 years **

## MODIS BB Temperatures

## RSB Response Trending (Terra MODIS) 

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## RSB Response Trending (Aqua MODIS)

***Page ***

## MODIS RSB Noisy & Inoperable Detectors

**No QA updates for RSB detectors since last workshop (01/2008)**

## Terra MODIS Noisy Detector HistoryDetectors in Product Order

## Aqua MODIS Noisy Detector HistoryDetectors in Product Order

| Day/Year | Band | 20 | 21 |  |  | 27 | 29 |  | B36 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|  | Spec NEdT [K] | 0.05 | 0.20 |  |  | 0.25 | 0.05 |  | 0.35 |
|  | Detector # | 10 | 3 | 9 | others | 3 | 2 | 8 | 5 |
| Pre-launch | - | 0.05 | 0.16 | 0.28 | near 0.2 | 0.10 | 0.02 | 0.02 | 1.34 |
| 175/2002 | Nadir door open | 0.03 | 0.23 | 0.23 | near 0.2 | 0.09 | 0.02 | 0.02 | 1.28 |
| 183/2002 | Back from safe mode | 0.03 | 0.20 | 0.25 | near 0.2 | 0.09 | 0.02 | 0.02 | 1.31 |
| 218/2002 | Back from safe mode | 0.03 | 0.19 | 0.26 | near 0.2 | 0.09 | 0.02 | 0.02 | 1.32 |
| 255/2002 | Back from safe mode | 0.03 | 0.23 | 0.20 | near 0.2 | 0.09 | 0.02 | 0.02 | 1.36 |
| 102/2003 | - | 0.03 | 0.43 | 0.19 | near 0.2 | 0.09 | 0.02 | 0.02 | 1.31 |
| 201/2003 | - | 0.03 | 0.18 | 0.18 | near 0.2 | 0.09 | 0.02 | 0.02 | 1.29 |
| 010/2005 | - | 0.03 | 0.17 | 0.19 | near 0.2 | 0.23 | 0.02 | 0.02 | 1.35 |
| 359/2007 | - | 0.03 | 0.18 | 0.21 | near 0.2 | 0.13 | 0.02 | 0.05 | 1.34 |
| 038/2008 | - | 0.03 | 0.19 | 0.19 | near 0.2 | 0.14 | 0.05 | 0.05 | 1.34 |

## Terra MODIS Spectral Characterization Results

**Band 2 not recoverable**

## Aqua MODIS Spectral Characterization Results

**Band 2 not recoverable**

## Terra MODIS Spatial Characterization Results

**Cold FPA**

**Cold FPA**

## Aqua MODIS Spatial Characterization Results

**Cold FPA**

**Cold FPA**

**A known problem between bands on Cold FPA and bands on warm FPA**

## Future Work 

**MSCN impact on PC bands 33-36**
**Limited progresses made **
**Improvement of B21 calibration**
**Preliminary results show scan-to-scan calibration is an alternative approach**
**TEB calibration source long-term drifting (progress made)**
**On-orbit changes of BB temperature and emissivity?**
**Update on-orbit calibration uncertainty**
**Time dependent**
**Calibration consistency between Terra and Aqua MODIS**
**RSB and TEB — e.g. some evidence that band 1& 2 differences are growing and affects NDVI, polarization effectsTerra versus Aqua**
**Cross-sensor calibration of MODIS with other sensors**
**Approaches developed and limited effort and progress made; e.g.,**
**    ****MODIS and AIRS, MODIS  and MISR, etc.**

***Page ***

## Summary 

- Both Terra (~8.5 years) and Aqua MODIS (~6 years) have shown satisfactory operation and performance
- Key on-board calibrators continue to function well
- Overall performance of Aqua MODIS is better than Terra MODIS
- Collection 6 issues have been identified with implementation plan and progresses made
- Coordination (issues and schedule) with science groups is required
- Large optics (SD and scan mirror) degradation remains challenging
- Detector dependent RVS will be applied in C6
- Polarization correction parameters are proposed for C6
- Continuous effort must be made to maintain instrument calibration and data quality, including Terra and Aqua MODIS calibration consistency
- In addition to MCST effort, input and support from science groups, instrument vendor (SBRS), and other expertise are needed

## MODIS Data Production and Archiving

**MODIS data are produced, archived and distributed by 4 separate, **
_**distributed **_**systems; i.e.,**
**-the Goddard MODIS Adaptive Processing system that produces **
** ****all Level 1 products leading to  all land and atmospheres products, **
** ****archives these products and distributes them to the public**
**-the Goddard Ocean Color Data Processing System (OCDPS)  **
** ****produces archives and distributes all ocean-related products**
** ****(ocean color, SST) to scientists and the public**
**-the U.S.G.S. Land Processes Distributed Active Archive Center**
** ****(DAAC) in Sioux Falls, SD archives and distributes all MODIS**
** ****land products (except cryosphere products)**
**-the National Snow and Ice Data Center (NSIDC) in Boulder,**
** ****Colorado archives and  distributes all MODIS cryosphere**
** ****(snow and ice) products **
** **

**At present the amount of MODIS Level 0 data coming from the two MODIS**
**Instruments is ~0.14 Terrabytes per day (“input”) and ~3.5-4 Terrabytes of **
**data in the form of geophysical products is being distributed to the Public**
**(“output”)**

**Collection 5 is nearly finished!!**

## Example: Some MODAPS Specifics

**Note: MODAPS, for example, archives or creates on demand a total of 86GB/day+165GB/day= 251GB/day and 2,054 files/day.  MODAPS in April shipped 2,400GB/day and 163,000 files/day to the Public. This equates to roughly 10x the volume archived and 80x the number of files archived.**

**Example: Some MODAPS Specifics**

## Ref: Xianwei Wang, Hongjie Xie, and Tiangang Liang, 

**Ref: Xianwei Wang, Hongjie Xie, and Tiangang Liang, **
**“****Evaluation of MODIS snow cover and cloud mask and **
**its application in Northern Xinjiang, China” , **
**Remote Sensing of Environment**
**Volume 112, Issue 4, 15 April 2008, Pages 1497-1513 ****Remote Sensing Data Assimilation Special Issue **

**Snow coverage in the Ili River Watershed in 2004–2005 hydrologic year.**

**Mean snow area extent at different elevations in the Ili River Watershed during 2000–2001 to 2005–2006 hydrologic years.**

##  Map of study area showing CTD temperature at 4 m depth (°C) and location of stations near San Quintin Bay. The bloom was sampled at station D1 and D2 on June 24. The dotted line indicates the 200 m isobath. 

**LAC MODIS/Aqua images showing chlorophyll *****a***** concentration (mg m−3) on June 24 (left) and 25 (right), 2003. Stations D1 and D2 are located within the white squares, which correspond to the zoom view in Figure to the right. **

-  **Map of study area showing CTD temperature at 4 m depth (°C) and location of stations near San Quintin Bay. The bloom was sampled at station D1 and D2 on June 24. The dotted line indicates the 200 m isobath. **

** ****Ref: Barocio-León, O. A, **_[ ](mailto:oscar_barocio@yahoo.com.mx)__, Millán-Núñez, R.,  et al.,_ **Continental Shelf Research, Volume 28, Issues 4-5, 30 March 2008, Pages 672-681 **

## Ref: S. Gassó,

**(a) Visible image of the South Sandwich area from MODIS-Aqua for 27 April 2006 (1615 UTC). (b) Cloud effective radii (reff) retrieved by MODIS-Aqua for the box shown in Figure 2a. (c) A regional view of the distribution of cloud water path retrieved by AMSR-E on board the Aqua satellite. The white line is the envelope of 10 μm reff from Figure 2b. **

**Ref: S. Gassó,**
**Satellite observations of the impact of weak volcanic activity on marine clouds**
**JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 113, D14S19, doi:10.1029/2007JD009106, 2008**

## MODIS PUBLICATION METRICS

**Results found in Web of Science:2,041 (all years)**
**     ****--485 (2007)—more than 1/day **
**Sum of the Times Cited :19,871****Average Citations per Item :9.74**
**2007 Fall AGU abstracts: 295**
**                  ****>200/meeting from 2005 to present**
**Direct Broadcast to over 150 stations and ~800-1000 users**

**MODIS PUBLICATION METRICS**
**(as of May 7, 2008)**

_**GOOGLE  SCHOLAR  “HITS”**_
**19,000** for **NASATERRA**
**  ****8,750** for **NASA AQUA**
**14,800** for **NASA MODIS**.
-   **5,650** for **NASA CERES**
-   **3,990** for **NASA AIRS**
-   **2,200** for **NASA AMSR**
**  ****3,040 for NASA MISR**
**  ****7,380 for NASA ASTER**
**  ****1,040 for NASA MOPITT**

## MODIS Instrument Panel (~ 1984)

|  | Name | Affiliation |
| --- | --- | --- |
| 1 | Wayne Esaias (Chairman) | NASA Headquarters (HQ) |
| 2 | William Barnes (Secretary) | NASA Goddard Spaceflight Center (GSFC) |
| 3 | Mark Abbott | Scripps/Jet Propulsion Lab. (JPL) |
| 4 | Steve Cox | Colorado State University  |
| 5 | Robert Evans | University of Miami |
| 6 | Robert Fraser | NASA/GSFC |
| 7 | Alexander Goetz[ | NASA/JPL |
| 8 | Howard Gordon  (Ex-officio) | University of Miami |
| 9 | Christopher Justice | University of Maryland |
| 10 | E. Paul McClain | National Oceanic and Atmospheric Administration  |
| 11 | Marvin Maxwell | NASA/GSFC |
| 12 | Robert Murphy | NASA HQ |
| 13 | John Prospero | University of Miami |
| 14 | Barrett Rock | NASA/JPL[ |
| 15 | Steven Running | University of Montana |
| 16 | Raymond Smith | University of California, Santa Barbara |
| 17 | Jerry Solomon | NASA/JPL |
| 18 | Michael Spanner (Ex-officio) | NASA/Ames Research Center (ARC) |
| 19 | Joel Susskind | NASA/GSFC |

**MODIS Instrument Panel (~ 1984**)

## MODIS ORIGINAL SCIENCE TEAM (~1988 — 20 years ago!! )

**MODIS ORIGINAL SCIENCE TEAM (~1988 — ****20 years ago!!**** )**

- 	V. Salomonson (Team Leader)	NASA GSFC

|  | Atmospheres Group | Affiliation |
| --- | --- | --- |
| 1 | Michael King (Group Leader) | NASA GSFC |
| 2 | Bo-Cai Gao | NASA GSFC |
| 3 | Yoram Kaufman | NASA GSFC |
| 4 | Paul Menzel | NOAA/University of Wisconsin |
| 5 | Didier Tanré | University of Lille, France |
|  | Land Group |  |
| 1 | Christopher Justice (Group Leader) | University of Maryland |
| 2 | Alfredo Huete | University of Arizona, Tucson |
| 3 | Jan-Peter Muller | University College London, UK |
| 4 | Ranga Myneni | Boston University |
| 5 | V. Salomonson  | NASA GSFC |
| 6 | Steven Running | University of Montana, Missoula |
| 7 | Alan Strahler | Boston University |
| 8 | John Townshend | University of Maryland |
| 9 | Eric Vermote | NASA GSFC |
| 10 | Zhengmin Wan | University of California, Santa Barbara |

## MODIS ORIGINAL SCIENCE TEAM (cont--~1988)

|  | Oceans Group |  |
| --- | --- | --- |
| 1 | Wayne Esaias (Group Leader) | NASA GSFC |
| 2 | Mark Abbott | Oregon State University |
| 3 | Ian Barton | CSIRO, Australia |
| 4 | Otis Brown | University of Maimi |
| 5 | Janet Campbell | University of New Hampshire |
| 6 | Kendall Carder | University of South Florida |
| 7 | Dennis Clark | NOAA NESDIS |
| 8 | Robert Evans | University of Miami |
| 9 | Howard Gordon | University of Miami |
| 10 | Frank Hoge | NASA GSFC |
| 11 | John Parslow | CSIRO, Australia |
|  | Calibration Group |  |
| 1 | Phil Slater (Group Leader) | University of Arizona |
| 2 | Kurt Thome | University of Arizona |
| 3 | William Barnes | NASA GSFC |

**MODIS ORIGINAL SCIENCE TEAM (cont--~1988)**

## SOME THOUGHTS ABOUT THE FUTURE

**COLLECTION 6 FOR LEVEL 1, ATMOSPHERES, and LAND  IS COMING**
**  ****UP—NEED INVOLVEMENT OF ALL TEAM MEMBERS TO ENSURE THAT**
**  ****THIS REPROCESSING GOES WELL.  OCEANS WILL CONTINUE TO**
**  ****REPROCESS AS NEEDED.**
**ANOTHER SENIOR REVIEW FOR TERRA AND AQUA WILL OCCUR IN**
**  ****2009—NEED GOOD RESULTS TO KEEP COMING TO SHOW THE **
**  ****VALUE OF CONTINUING MISSIONS INCLUDING MODIS**
**NPP&NPOESS VIIRS IS EMERGING.  THIS IS VERY EXCITING IN TERMS**
** ****OF CONTINUING THE IMPACT OF MODIS-LIKE PRODUCTS FOR **
** ****GLOBAL STUDIES INTO THE FUTURE.   CONTINUED EVALUATION AND **
** ****STUDY OF PRODUCTS INCLUDING THE IMPORTANCE OF **
** ****REPROCESSING  NEEDS TO BE KEPT IN MIND.**

## OVERALL SUMMARY

**TERRA AND AQUA MODIS INSTRUMENTS WORKING WELL AFTER 6-8 YEARS**
**EXCELLENT MODIS PRODUCTS HAVE BEEN DEVELOPED AND ARE INCREASINGLY USED  FOR SCIENCE AND APPLICATIONS**
**DATA PRODUCTS ARE**
**BEING PROCESSED, ARCHIVED AND DISTRIBUTED WELL**
**  **
**DIRECT BROADCAST**
**OF MODIS PRODUCTS  A**
**GREAT SUCCESS**
**THE FUTURE BEYOND **
** ****MODIS LOOKS PROMISING**
** ****WITH NPP/NPOESS VIIRS**
** **