# Presentation: 948074

## XOVWM User Impact StudyCoastal Simulations

- Contacts:
- _[Zorana.Jelenak@noaa.gov](mailto:Zorana.Jelenak@noaa.gov)_
- _Paul.S.Chang@noaa.gov_

## QuikSCAT Follow-On Mission Options

**QuikSCAT Follow-On Mission Options**

**	****In June 2007, NOAA asked JPL to conduct a study to provide the technical readiness, cost, and impact to NOAA of (1M investment):**
**A QuikSCAT equivalent re-flight**
**An Extended Ocean Vector Winds Mission (XOVWM) **
**A constellation (2) of XOVWM instruments**
**A draft of the final report documenting results of this study will be ready by January, 2008**

## XOWVM Impact Study

- As part of JPL study user input is needed regarding proposed mission options
- Input desired by 4th of January
- Mini wind workshop held at the end of NOAA Hurricane conference and study results were presented
- GoTo meetings are set up to reach as many interested users as possible
- Written statements from offices are desired addressing the following questions:
- What realized impacts on your daily work would be continued if QuikSCAT-like instrument is launched (swell forecast?, )
- Based on simulation results presented what is perceived impact that new capability can bring to your areas of responsibility (no buoys in particular areas of interest, wind events affecting your particular region not observed so far...)
- Due to time limitations simulation study is limited in its scope. In order to get more comprehensive understanding of new capability what are simulations that would be of interest for your area of responsibilities

## Target Level 1 Performance Requirements

*For NASA missions, these are ****must meet**** requirements which must be demonstrated prior to launch. NASA instruments frequently perform significantly better the requirements.*

| Parameter | QuikSCAT Replacement | XOVWM |
| --- | --- | --- |
| Operational Life | 5 years with consumables for 10 years | Same |
| Coverage | 1800km (90% of the ocean surface in every 24 hour period) | Same |
| Product Latency | < 180 minutes for 85% of the data | Same |
| Wind Vector Cell Resolution | 25/12.5 km | 5 km |
| Coastal Mask | 20 km | 5 km |
| Wind Speed Accuracy | 3-20 m/s: 2 m/s rms | Same |
|  | 20-30 m/s:  10% rms | Same |
|  | 30-80 m/s: not specified | 30-80 m/s:  10 % rms |
| Wind Direction Accuracy | 3-30 m/s: 20 rms | Same |
|  | 30-80 m/s: not specified | 30-80 m/s:  20 rms |

**Higher spatial resolution (~5km)**
**Full wind speed range (to category 5), **
**Coastal coverage 2.5-5 km of land**
**Significantly better retrievals in rain impacted measurements**

## XOVWM Coastal Studies

**Motivation**
- Nearly 50% of the US population lives near the coasts
- Coastal fisheries depend on wind-driven nutrient upwelling
- The shipping and fishing industries need to know winds near the coasts
- Winds near the coasts are influenced by land topography and can exhibit strong jets and fronts
- XOVWM can measure winds with 2.5km of the coast
- QuikSCAT measures winds only up to 20 km from the coast, and cannot meet the coastal winds needs
**Study description:**
- Use NOGAPS model wind complemented with SAR 500m resolution wind speed observations to simulate XOVWM and QuikSCAT data (SAR does not provide direction data and has limited temporal coverage.)
- Primary data (Alaska) selected by NOAA based on known hazardous coastal winds in shipping lanes and fisheries
- Additional data (California & Oregon) selected based on known highly variable coastal winds

## Alaska Coast

## Alaska Coast: Chatham Strait & Cross Sound

- Juneau

- Sitka

- Cross
- Sound

- Chatham
- Strait

- The Alaska coast near Juneau and Sitka has frequent strong coastal winds which affect the safety of shipping and fishing boats.

## Alaska CoastCurrently Available Routine Data Availability

- Model winds are routinely available at low resolution, which fail to capture high speed coastal winds and variability

- Occasionally, SAR wind speed data (no directions) are available that give an indication of the true wind variability. Note speeds do not agree with model.

## Gulf of Alaska Wind Retrieval Examples

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

**Gulf of Alaska Wind Retrieval Examples**

- Juneau

- Chatman Strait

**55.5N**

**58.5N**

**136W**

**133W**

## Gulf of Alaska Wind Retrieval Examples

**Gulf of Alaska Wind Retrieval Examples**

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

**56.5N**

**60N**

**154W**

**151W**

**144W**

## West Coast

## West Coast Wind Example – 05/09/05

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

**San Francisco Bay**

**Pt Reyes**

**Pt Arena**

**124W**

**122.5W**

**37.5N**

**39.5N**

## West Coast Wind Example – 05/06/05

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

**San Francisco Bay**

**Pt Reyes**

**Pt Arena**

**39.5N**

**37.5N**

**124.5W**

**122.5W**

## 08/23/05 – 18:25UTC

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

## 08/26/05 – 18:30UTC

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

## 09/08/05 – 06:10UTC

**SAR Winds + NOGAPS Directions**

**XOVWM Retrievals**

**QuikSCAT-like Retrievals**

## Written Feedback on Following Questions is Desired by 4th of Jan ‘08

- What realized impacts on your daily work would be continued if QuikSCAT-like instrument is launched (swell forecast?, )
- Based on simulation results presented what is perceived impact that new capability can bring to your areas of responsibility (no buoys in particular areas of interest, wind events affecting your particular region not observed so far...)
- Due to time limitations simulation study is limited in its scope. In order to get more comprehensive understanding of new capability what are simulations that would be of interest for your area of responsibilities

**Additional information available at:**
_**http://manati.orbit.nesdis.noaa.gov/SVW_nextgen/osvw_mini_workshop.html**_