How long a precipitation event lasts.
Used to calculate:rainfall
Varies by: month, precipevent and climate
| Used | month | precipevent | climate | Reference | Location: Ecosystem (study period) |
Value | Units | Notes |
|---|
| * | June | Clear day | Baseline Climate (1970-2010) | Assumed | New York City: Urban Area () | 0 | hours | We have assumed there are no hours of rainfall on a clear day. |
| * | June | Clear day | Future Climate in 2020s | Assumed | New York City: Urban Area () | 0 | hours | We have assumed there are no hours of rainfall on a clear day. |
| * | June | Clear day | Future Climate in 2050s | Assumed | New York City: Urban Area () | 0 | hours | We have assumed there are no hours of rainfall on a clear day. |
| * | June | Clear day | Future Climate in 2080s | Assumed | New York City: Urban Area () | 0 | hours | We have assumed there are no hours of rainfall on a clear day. |
| * | June | Clear day | Future Climate in 2100s | Assumed | New York City: Urban Area () | 0 | hours | We have assumed there are no hours of rainfall on a clear day. |
| * | June | Clear day | Past Climate in 1609 | Assumed | New York City: Urban Area () | 0 | hours | We have assumed there are no hours of rainfall on a clear day. |
| * | June | Rainy day | Baseline Climate (1970-2010) | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 6 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 2 year storm lasting 6 hours with an intensity of 0.65 in/hr. |
| June | Rainy day | Baseline Climate (1970-2010) | NYC 2010 CEQR Technical Manual | New York City: New York City (2010) | 11.3 | hours | See Matrix 1 and 2 for information about rainfall duration for different precipitation events. We have assumed the same duration for past and future climates. | |
| * | June | Rainy day | Future Climate in 2020s | Assumed | New York City: Urban Area () | 6 | hours | We assume the same precipitation durations across climate scenarios. |
| * | June | Rainy day | Future Climate in 2050s | Assumed | New York City: Urban Area () | 6 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Rainy day | Future Climate in 2080s | Assumed | New York City: Urban Area () | 6 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Rainy day | Future Climate in 2100s | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 6 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 2 year storm lasting 6 hours with an intensity of 0.65 in/hr. We assume the same precipitation duration across climate scenarios. |
| * | June | Rainy day | Past Climate in 1609 | Assumed | New York City: Urban Area () | 6 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Severe storm | Baseline Climate (1970-2010) | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 24 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 100 year storm lasting 24 hours with an intensity of 0.65 in/hr. |
| June | Severe storm | Baseline Climate (1970-2010) | NYC 2010 CEQR Technical Manual | New York City: New York City (2010) | 2.5 | hours | See Matrix 1 and 2 for information about rainfall duration for different precipitation events. | |
| * | June | Severe storm | Future Climate in 2020s | Assumed | New York City: Urban Area () | 24 | hours | We assume the same precipitation durations across all climate scenarios |
| * | June | Severe storm | Future Climate in 2050s | Assumed | New York City: Urban Area () | 24 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Severe storm | Future Climate in 2080s | Assumed | New York City: Urban Area () | 24 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Severe storm | Future Climate in 2100s | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 24 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 100 year storm lasting 24 hours with an intensity of 0.65 in/hr. We assume the same precipitation duration across climate scenarios. |
| * | June | Severe storm | Past Climate in 1609 | Assumed | New York City: Urban Area () | 24 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Showers | Baseline Climate (1970-2010) | Assumed | New York City: Urban Area () | 2 | hours | Assumed to be 0.4 in/hr for 2 hours, resulting in less than one inch of precipitation |
| June | Showers | Baseline Climate (1970-2010) | NYC 2010 CEQR Technical Manual | New York City: New York City (2010) | 3.8 | hours | See Matrix 1 and 2 for information about rainfall duration for different precipitation events. | |
| * | June | Showers | Future Climate in 2020s | Assumed | New York City: Urban Area () | 2 | hours | Same duration for all climate scenarios |
| * | June | Showers | Future Climate in 2050s | Assumed | New York City: Urban Area () | 2 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Showers | Future Climate in 2080s | Assumed | New York City: Urban Area () | 2 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Showers | Future Climate in 2100s | Assumed | New York City: Urban Area () | 2 | hours | Assumed to be 0.4 in/hr for 2 hours resulting in less than one inch of precipitation. We assume the same precipitation duration across climate scenarios. |
| * | June | Showers | Past Climate in 1609 | Assumed | New York City: Urban Area () | 2 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Soaking storm | Baseline Climate (1970-2010) | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 12 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 10 year storm lasting 12 hours with an intensity of 0.6 in/hr. |
| June | Soaking storm | Baseline Climate (1970-2010) | NYC 2010 CEQR Technical Manual | New York City: New York City (2010) | 19.5 | hours | See Matrix 1 and 2 for information about rainfall duration for different precipitation events. | |
| * | June | Soaking storm | Future Climate in 2020s | Assumed | New York City: Urban Area () | 12 | hours | We assume the same precipitation durations across climate scenarios. |
| * | June | Soaking storm | Future Climate in 2050s | Assumed | New York City: Urban Area () | 12 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Soaking storm | Future Climate in 2080s | Assumed | New York City: Urban Area () | 12 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Soaking storm | Future Climate in 2100s | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 12 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 10 year storm lasting 12 hours with an intensity of 0.6 in/hr. We assume the same precipitation duration across climate scenarios. |
| * | June | Soaking storm | Past Climate in 1609 | Assumed | New York City: Urban Area () | 12 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Thunderstorm | Baseline Climate (1970-2010) | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 1 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 5 year storm lasting 1 hour with an intensity of 1.75 in/hr. This duration is considered the "standard design criterion" for stormwater infrastructure in New York City. |
| June | Thunderstorm | Baseline Climate (1970-2010) | NYC 2010 CEQR Technical Manual | New York City: New York City (2010) | 0.75 | hours | See Matrix 1 and 2 for information about rainfall duration for different precipitation events. | |
| * | June | Thunderstorm | Future Climate in 2020s | Assumed | New York City: Urban Area () | 1 | hours | We assume that precipitation durations are the same across climate scenarios |
| * | June | Thunderstorm | Future Climate in 2050s | Assumed | New York City: Urban Area () | 1 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Thunderstorm | Future Climate in 2080s | Assumed | New York City: Mannahatta () | 1 | hours | We assume the same precipitation duration across climate scenarios. |
| * | June | Thunderstorm | Future Climate in 2100s | NYC DEP 2008 Climate Change Program Assessment and Action Plan | New York City: Built ecosystems (1903-1951) | 1 | hours | Drawn from the 1903-1951 NYC intensity-duration-frequency curve for a 5 year storm lasting 1 hour with an intensity of 1.75 in/hr. This duration is considered the "standard design criterion" for stormwater infrastructure in New York City. We assume the same precipitation duration for all climate scenarios. |
| * | June | Thunderstorm | Past Climate in 1609 | Assumed | New York City: Urban Area () | 1 | hours | We assume the same precipitation duration across climate scenarios. |