# Aqua Teleconference August 4, 2005

**On the phone:**

*Project science*: Claire Parkinson (telecon chair), Steve Platnick,
Steve Graham

*Instruments*: Vince Salomonson, Elena Lobl, Bruce Wielicki

*ESMO*: Bill Guit, Angie Kelly

*Data*: Yun-Chi Lu

*HQ:* Ramesh Kakar

## **Mission Ops (Guit):** see distributed ppt file for details. 

[Highlights of Major Activities for Last Month:]{.underline}

-   7/20: MODIS SRCA lamp failure Anomaly Team meeting

-   7/27: MODIS SRCA lamp failure Review Board kickoff meeting

-   7/28: AMSU Anomaly Team kickoff meeting

######## 

######## Highlight of Planned Activities for This Month

-   8/3: DMUM #22 (went well)

-   Late Aug: start Alaska Ground Station antenna recertification
    testing, should be back up with all Alaska antennas by end of the
    month.

[Future activities]{.underline}

-   TBD: HSB turn-on test #14

-   TBD: EEPROM refresh, summer 2005

## Spacecraft Anomalies - OPEN

-   SADA potentiometer -- noisy, continuing to monitor, no impact on
    ops. Flight SW mods are likely required. FOT continues to monitor.

-   Array Regulator Electronics anomaly -- no impact on ops. FOT
    continues to monitor.

## Instrument Anomalies -- OPEN

-   AMSU A1-2 noisy bus: On DOY 2005/181, the AIRS IOT reported that the
    slow but steady increase in peak orbital current on the Aqua
    AMSU-A1-2 noisy bus is continuing. This bus provides power to the
    antenna used by four channels.

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-   The AMSU project scientist made a projection from the data over the
    last three months and his very rough estimate is that the antenna
    currents will reach the yellow alarm level of 100 mA in three to six
    months, assuming that present trends continue.

-   We appear to be seeing bearing wear and/or incipient lubricant
    failure. JPL is investigating spikes on the noisy bus current to the
    scanners. They have requested Northrop Grumman Electronic Systems
    (NGES) support.

-   Latest trend data appears to indicate a reversal in the current

-   Anomaly Review Team (ART) Meeting was held July 28^th^ and
    [concluded that the observed increase in scan motor current was
    indicative of normal wear and didn't warrant further investigation
    at this time]{.underline}.

-   IOT & FOT will continue to monitor performance

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-   MODIS Spectral Radiometric Calibration Assembly (SRCA): Testing of
    SRCA lamps conducted on 6/27-28 concluded that there has been a
    failure of lamp #3 (10W). MCST will request SRCA calibrations to be
    modified to operate w/out lamp #3 (limits characterization to 1, 10,
    and 20W calibration levels). The SRCA is used for bi-monthly cal
    activities, no short-term effect on science. We've had problems with
    these 10W lamps (2 on Aqua, 1 on Terra), so a Review Board has been
    established (charter has been written).

-   CERES FM-4: Shortwave bridge balance electronics failed to update
    bridge settings. FOT continues bridge balance to keep the channel on
    scale. Awaiting CERES team report.

-   AMSU-A2 temperature anomaly: Preliminary report delivered on 2/22.
    Anomaly Review Team agreed to changes in closeout report. Final
    revision from JPL expected shortly.

[Spacecraft]{.underline}: status = green

[Instruments]{.underline}: status = green (noting anomalies mentioned)

[Data capture/L0 processing]{.underline}: status = green (but capture
less than usual due to data losses, see below)

> 7/10: About an hour-and-a-half of AIRS and MODIS high rate data was
> lost (largest data loss to date) due to ground station limitations.
> Gilmore Creek dropped X-band link during playback; replay was not
> completely successful.
>
> 7/21: 59 seconds of AIRS and MODIS high rate data was lost due to
> Svalbard SKS and SG4 ground station anomalies; data was overwritten by
> the time replay was attempted.

[Mission Director Top Ten (abridged list):]{.underline}

-   Space debris avoidance. Routine screening occurring for Aqua, Aura,
    PARASOL, Landsat (-5, -7), and Terra. No recent approaches.

-   Aqua S/C and instrument anomalies: MODIS SRCA, CERES FM-4, AMSU scan
    motor anomaly

-   Afternoon constellation activities.

-   CloudSat/CALIPSO launch no earlier than 29 September.

VS: Who looks at generic constellation flying and debris issues? BG: We
at ESMO (myself, Angie) have the lead for monitoring and planning.

### **Project Science (Parkinson, Platnick):**

*Parkinson:*

NASA Headquarters requested a meeting to discuss the Aqua mission
status, with specific interest in instrument anomaly issues (e.g., MODIS
SRCA lamp, AMSU, CERES FM-4 shortwave channel). Original date (Aug 10)
has been changed; dates currently being considered are August 19, 23, or
26. RK: My calendar shows August 23, 1:30 pm.

The meeting is now expected to be scheduled for 2 hours, so we should
tentatively plan on each team having 15 minutes to present, with 5
minutes for discussion, leaving slots also for Claire and Mission
Operations (likely Paul Ondrus and/or Bill Guit).

There are a few combined Aqua-science lists that would be nice to show
at the meeting. A request for input was sent out in an email last week.
Would like this input by the end of next week.

**Data system/EOSDIS (Lu):**

There have been price increases for ASTER data: \$80 for ftp orders and
\$91 for media orders, plus \$20 and \$5 for international and domestic
handling, respectively. This pricing is comparable to Japanese prices.
The data pool remains free.

**Science Working Group for Data -- SWGD:**

No report.

**CERES (Wielicki):**

Kory Priestley is at the SPIE meeting.

Norm Loeb is close to completing Aqua ADMs (by the end of August) that
should be able to get incorporated in the upcoming fall reprocessing.
NEWS (water energy cycle NRA) proposal was funded which will allow us to
merge Aqua CERES/MODIS data with CloudSat/CALIPSO data.

**MODIS (Salomonson):**

Will be starting Terra reprocessing (collection 5). Atmosphere's team
will be starting shortly. Jack Xiong reported to Vince that there were a
lot of MODIS papers (science and applications) at IGARSS in Seoul,
Korea, in July. Michael King had an Aqua/Terra session.

**AMSR-E (Lobl):**

Just returned from IGARSS in Seoul, Korea. She had a session on AMSR-E,
and there were also AMSR-E papers in other sessions.

Frank Wentz still working on calibration issues related to geolocation
(see minutes from last telecon). Reprocessing start has now been moved
to October.

Elena is writing a BAMS paper on the Wakasa Bay experiment; other Wakasa
Bay papers will appear in another journal.

The science team meeting will be September 13, 14, 15 in Hawaii. Elena
encouraged attendance from members of other Aqua science teams as well.

### **AIRS/AMSU:**

No report.

### **HQ (Kakar):**

Changes likely to occur here with HQ administration but nothing
announced yet.

**Outreach, web site, etc. (Graham):**

The server the Aqua web site resides on was recently hacked into and is
now down. The site is expected to be back up in about 2 weeks.

**Next Telecon:** Thursday, 1 September 2005.

Minutes are being placed on the following site:
<http://aqua.nasa.gov/minutes>. Corrections/additions should be sent to
Steve Platnick.