BayCurrents vs LiveWeather Map Usage & Stats

BayCurrents is a mobile app for displaying maps of high resolution surface currents within the San Francisco Bay. The app is intended to support a wide range of maritime activities, from recreational fishing and sailing to the operation of professional transport vessels. The source for the surface current data is a numerical model operated by the National Oceanic & Atmospheric Administration (NOAA). The model benefits from oceanographic high-frequency radar (HFR) measurements from the Central & Northern California Ocean Observing System (CeNCOOS) HFR Network, along with other observations such as tides and wind. The resulting dataset contains current vector fields for hourly timestamps ranging from the recent past, to the present and up to 48 hours into the future. The complete vector dataset is downloaded by the app to allow autonomous offline operation. This app contains experimental data and is NOT for navigational purposes.

Apple App Store
Free
Weather

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LiveWeather Map

-- This is an inofficial iOS App port of the Nullschool Earth Project by Cameron Beccario -- A free open weather Map to show wind, weather and oceans conditions. Height: Atmospheric pressure corresponds roughly to altitude several pressure layers are meteorologically interesting they show data assuming the earth is completely smooth note: 1 hectopascal (hPa) = 1 millibar (mb) Surface - the "Surface" layer represents conditions at ground or water level this layer follows the contours of mountains, valleys, etc. • 1000hPa ~100 m, near sea level conditions • 850hPa ~1,500 m, planetary boundary, low • 700hPa ~3,500 m, planetary boundary, high • 500hPa ~5,000 m, vorticity • 250hPa ~10,500 m, jet stream • 70hPa ~17,500 m, stratosphere • 10hPa ~26,500 m, even more stratosphere Overlay: Show another dimension of data using color some overlays are valid at a specific height while others are valid for the entire thickness of the atmosphere • Wind - wind speed at specified height • Temp - temperature at specified height • RH - relative humidity at specified height • WPD - Instantaneous Wind Power Density. Measure of power available in the wind: ½ρv3, where ρ is air density and v is wind velocity • TPW - Total Precipitable Water. Total amount of water in a column of air stretching from ground to space • TCW - Total Cloud Water. Total amount of water in clouds in a column of air from ground to space • 3HPA - 3-hour Precipitation Accumulation. Amount of precipitation over the next three hours • CAPE - Convective Available Potential Energy from Surface. Indicates the buoyancy of air, a measure of atmospheric instability and predictor of severe weather • MSLP - Mean Sea Level Pressure. Air pressure reduced to sea level • MI - Misery Index. Perceived air temperature as combination of heat index and wind chill • SST - Sea Surface Temperature. Temperature of the ocean surface • SSTA - Sea Surface Temperature Anomaly. Difference in ocean temperature from daily average during years 1981-2011 • HTSGW - Significant Wave Height. Roughly equal to mean wave height as estimated by a "trained observer" • COsc - Carbon Monoxide Surface Concentration. The fraction of carbon monoxide present in air at the earth's surface • CO2sc - Carbon Dioxide Surface Concentration. The fraction of carbon dioxide present in air at the earth's surface • SO2sm - Sulfur Dioxide Surface Mass. Amount of sulfur dioxide in the air near the earth's surface • DUex - Dust Extinction. The aerosol optical thickness (AOT) of light at 550 nm due to dust • SO4ex - Sulfate Extinction. The aerosol optical thickness (AOT) of light at 550 nm due to sulfate Projection : • Atlantis (A) • Azimuthal Equidistant (AE) • Conic Equidistant (CE) • Equirectangular (E) • Orthographic (O) • Patterson (P) • Stereographic (S) • Waterman Butterfly (WB) • Winkel Tripel (W3) Longitude : • Longitude (-360 - 360). Example: -214.68 Latitude : • Latitude (-360 - 360). Example: 14.2 Zoom : • Zoom (0-3000)